Agreement

City of Mesa — City Council (2026-03-09)

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FINAL 01-06-2026 
  
 
 
PINAL POWER PURCHASE AND ENERGY STORAGE AGREEMENT 
 
 
 
 
BETWEEN 
 
 
ARIZONA ELECTRIC POWER COOPERATIVE 
 
AND 
 
 
CITY OF MESA, ARIZONA

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PINAL POWER PURCHASE AND ENERGY STORAGE AGREEMENT 
 
TABLE OF CONTENTS 
 
Page 
ARTICLE I. DEFINITIONS AND INTERPRETATION ....................................................... 4 
1.1 
Definitions.............................................................................................................. 4 
1.2 
Usage of Certain Terms and Phrases ................................................................... 10 
ARTICLE II. CONDITIONS, TERM, TERMINATION ...................................................... 11 
2.1 
Conditions Precedent; Replacement of Subscription Agreement; Step-up 
Obligation ............................................................................................................ 11 
2.2 
Term ..................................................................................................................... 11 
2.3 
Termination .......................................................................................................... 11 
ARTICLE III. INSTALLATION AND OPERATION OF THE GENERATION 
FACILITY AND THE BESS ........................................................................ 12 
3.1 
Service Provider Agreement ................................................................................ 12 
3.2 
Commercial Operation ......................................................................................... 12 
3.3 
Interruption of Service – Scheduled Outages ...................................................... 12 
3.4 
Interruption of Service – Unscheduled Outages .................................................. 12 
3.5 
Operation and Construction Committee .............................................................. 13 
3.6 
Test Energy .......................................................................................................... 13 
ARTICLE IV. POWER PURCHASE AND ENERGY STORAGE 
REQUIREMENT ........................................................................................... 13 
4.1 
Purchase and Sale of the Product ......................................................................... 13 
4.2 
Generation Delivery ............................................................................................. 14 
4.3 
Discharge Energy Delivery .................................................................................. 14 
4.4 
Metering ............................................................................................................... 15 
4.5 
Billing and Payment ............................................................................................. 15 
4.6 
Audit Rights ......................................................................................................... 16 
4.7 
Liquidated Damages ............................................................................................ 17 
4.8 
Solar Forecast....................................................................................................... 17 
4.9 
Operation and Scheduling of BESS ..................................................................... 17 
4.10 
Participant’s Economic Curtailment .................................................................... 17 
4.11 
AEPCO’s Use of Participant BESS Capacity ...................................................... 18 
ARTICLE V. REPRESENTATIONS AND WARRANTIES; TITLE AND RISK 
OF LOSS ........................................................................................................ 18 
5.1 
Representations and Warranties ........................................................................... 18 
5.2 
Title and Risk of Loss .......................................................................................... 19 
5.3 
Legal and Financial Funding Opinion. ................................................................ 20

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ARTICLE VI. EVENTS OF DEFAULT, REMEDIES ......................................................... 20 
6.1 
Events of Default ................................................................................................. 20 
6.2 
Remedies .............................................................................................................. 21 
6.3 
No Waiver ............................................................................................................ 21 
6.4 
Limitation of Liability.......................................................................................... 22 
6.5 
Participant Step-Up Obligations .......................................................................... 22 
6.6 
Subscriber Defaults .............................................................................................. 22 
ARTICLE VII. FORCE MAJEURE ...................................................................................... 23 
7.1 
General ................................................................................................................. 23 
7.2 
Additional Effects of Force Majeure ................................................................... 23 
ARTICLE VIII. INDEMNIFICATION ................................................................................. 23 
8.1 
Indemnification .................................................................................................... 24 
8.2 
Insurance .............................................................................................................. 24 
ARTICLE IX. CREDITWORTHINESS ............................................................................... 24 
9.1 
Financial Information........................................................................................... 24 
9.2 
Credit Support ...................................................................................................... 24 
9.3 
Letter of Credit ..................................................................................................... 25 
ARTICLE X. MISCELLANEOUS ....................................................................................... 26 
10.1 
Assignment .......................................................................................................... 26 
10.2 
Permitted Encumbrances ..................................................................................... 26 
10.3 
Taxes .................................................................................................................... 26 
10.4 
Governing Law and Venue .................................................................................. 26 
10.5 
Waiver of Trial by Jury ........................................................................................ 26 
10.6 
Dispute Resolution ............................................................................................... 27 
10.7 
Successors and Assigns........................................................................................ 27 
10.8 
Severability .......................................................................................................... 27 
10.9 
Compliance with Laws ........................................................................................ 27 
10.10 Entire Agreement ................................................................................................. 27 
10.11 Not to be Construed Against Drafter ................................................................... 27 
10.12 No Personal Liability ........................................................................................... 27 
10.13 Time of Essence ................................................................................................... 27 
10.14 Counterparts ......................................................................................................... 28 
10.15 Survival ................................................................................................................ 28 
10.16 Confidentiality ..................................................................................................... 28 
10.17 Third Party Beneficiary........................................................................................ 29 
10.18 Waiver and Amendment ...................................................................................... 29 
10.19 No Joint Venture .................................................................................................. 29 
10.20 Exhibits ................................................................................................................ 29 
10.21 Enforcement of Rights on Behalf of Participant .................................................. 29

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10.22 Notice from Service Provider .............................................................................. 29 
10.23 Registration of Environmental Attributes ............................................................ 29 
10.24 Arizona Provisions ............................................................................................... 29 
10.25 Participant Payment Limitation ........................................................................... 29 
ARTICLE XI. NOTICES....................................................................................................... 30 
EXHIBIT A - DESCRIPTION OF PROJECT ...................................................................... 32 
EXHIBIT B – DELIVERY POINT ....................................................................................... 33 
EXHIBIT C – RATES FOR SERVICE ................................................................................. 34 
EXHIBIT D – DISCHARGE ENERGY DELIVERY CHARGE ......................................... 35 
EXHIBIT E – FORM OF LETTER OF CREDIT ................................................................. 36 
EXHIBIT F – PARTICIPANT’S AGENT ............................................................................ 38 
EXHIBIT G – SUBSCRIPTION SHARES ........................................................................... 39

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This Pinal Power Purchase and Energy Storage Agreement ("Agreement") is made and 
entered on __________, by and between Arizona Electric Power Cooperative, Inc., an Arizona 
nonprofit generation and transmission cooperative corporation (hereinafter referred to as 
“AEPCO”) and City of Mesa, Arizona (hereinafter referred to as “Participant”). AEPCO and 
Participant are sometimes hereinafter referred to collectively as the "Parties" and individually as a 
"Party." 
RECITALS 
A. 
AEPCO offered its Class A, B, and D Members the opportunity to acquire Solar Output 
from the Generation Facility and energy storage services (“Energy Storage Services” or 
“ESS”) and related benefits from an approximately 400 MWAC, co-located battery energy 
storage system (the “Battery Energy Storage System” or “BESS”). The Generation 
Facility and the BESS (collectively the “Project”) located in Pinal County, Arizona, is 
further described on Exhibit A attached hereto. 
B. 
AEPCO, Participant and other Subscribers entered into the Pinal Solar and Storage 
Planning and Subscription Agreement, dated May 6, 2025 ("Subscription Agreement"), 
to provide for a third party (“Service Provider”) to develop, own, operate, and sell the 
output from the Project to AEPCO, pursuant to the Power Purchase and Energy Storage 
Agreement, dated January 17, 2025, between AEPCO and Service Provider ("Service 
Provider Agreement").  
C. 
AEPCO will, in turn, sell the Product to Participant based on Participant’s percentage 
Subscription Share (as defined below) of the Generation Facility and of the BESS pursuant 
to this Agreement.  
 
NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of 
which are hereby acknowledged, the Parties hereto agree as follows: 
 
ARTICLE I. DEFINITIONS AND INTERPRETATION 
1.1 
Definitions. As used in this Agreement, the following terms, when capitalized, shall have 
the following meanings. Other capitalized terms used but not defined herein shall have 
their respective meanings as set forth in the Subscription Agreement or the Service 
Provider Agreement as defined herein. “AEPCO” has the meaning set forth in the 
Preamble. 
“AEPCO Permitted Mortgagee” has the meaning specified in Section 10.2(a). 
“Affiliate” means, with respect to any person, any other person (other than an individual) that, 
directly or indirectly, through one or more intermediaries, controls, or is controlled by, or is under 
common control with, such person. For this purpose, “control” means the direct or indirect

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ownership of fifty percent (50%) or more of the outstanding capital stock or other equity interests 
having ordinary voting power.  
“Agreement” means this Pinal Power Purchase and Energy Storage Agreement between 
Participant and AEPCO, including all exhibits hereto, entered into between Participant and 
AEPCO, for the purpose of facilitating the purchase and sale of Product from the Project. 
“Ancillary Services” means operating reserves, regulation and automatic generator control, 
reactive supply, voltage control, frequency response, and other products associated with the 
electrical generation, capacity and energy that the Project is capable of providing and all other 
beneficial outputs of the Project not required for the operation of the Project. 
“Approvals and Permits” means all applicable approvals, consents, franchises, permits, licenses, 
certificates, inspections, and authorizations required by any utility, Governmental Authority, or 
any other entity, including any modifications thereto, arising out of, or related to, the design, 
installation, operation, maintenance, and/or repair of the Project. 
“Availability Guarantee” means the guarantee provided by Service Provider pursuant to Annex 
B of the Service Provider Agreement. 
“Bankrupt” means with respect to any entity, such entity (i) files a petition or otherwise 
commences, authorizes or acquiesces in the commencement of a proceeding or cause of action 
under any bankruptcy, insolvency, reorganization or similar law, or has any such petition filed or 
commenced against it, and such petition filed or commenced against it is not withdrawn or 
dismissed within thirty (30) days after such filing; (ii) makes an assignment or any general 
arrangement for the benefit of creditors, (iii) otherwise becomes bankrupt or insolvent (however 
evidenced), (iv) has a liquidator, administrator, receiver, trustee, conservator or similar official 
appointed with respect to it or any substantial portion of its property or assets, or (v) is generally 
unable to pay its debts as they fall due. 
“Battery Energy Storage System” or “BESS” means the battery arrays, battery system controller, 
inverters, transformers, thermal management system, and other equipment necessary to charge, 
store, and subsequently deliver electricity to the Delivery Point and all associated equipment, 
facilities, interconnection facilities, tangible assets, and contract rights associated with the ESS. 
“Business Day” means any day other than Saturday, Sunday, or legal holidays for federally 
chartered banks in the State of Arizona.  
“Capacity Rights” means any current or future defined characteristic, certificate, tag, credit, or 
accounting construct associated with the amount of power that the Project can generate at a 
particular moment and that can be purchased and sold under market rules adopted in the region 
where the Project is supplying to or located. 
“Charging Energy” means all energy delivered to the Receipt Point for storage and later delivery 
as Discharge Energy regardless of the source of such energy, inclusive of any energy used for 
transformation and transmission losses. 
“Claiming Party” has the meaning specified in Section 7.1.

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“Commercial Operation” means that: 1) the Project has met the requirements to achieve 
commercial operation pursuant to the Service Provider Agreement, 2) the Project is capable of 
providing energy from the Generation Facility and the BESS at the Delivery Point, and 3) AEPCO 
has provided notice of achievement of commercial operation to Participant.  
“Commercial Operation Date” means the date upon which the conditions have been met that 
establish the “Commercial Operation Date” in the Service Provider Agreement. 
“Costs” means, with respect to the Non-Defaulting Party, the actual and documented out-of-pocket 
brokerage fees, commissions and similar transaction costs and expenses reasonably incurred in 
terminating any arrangement under this Agreement or entering into new arrangements that replace 
the Product as a result of, and all reasonable attorneys’ fees incurred by the Non-Defaulting Party 
in connection with, the termination of this Agreement pursuant to Section 6.2.  
“Defaulting Party” has the meaning specified in Section 6.1. 
“Delivery Point” means the Delivery Point as further described in Exhibit B. For the avoidance 
of doubt, Charging Energy delivered to the Receipt Point shall be deemed to have been delivered 
at the Delivery Point. 
"Discharge Energy” means all energy discharged by the BESS, as measured at the Metering Point, 
less Station Use Energy for the BESS and less transformation and transmission losses. 
“Economic Curtailment Energy” has the meaning set forth in Section 4.10. 
“Economic Curtailment Schedule” has the meaning set forth in Section 4.10. 
“Effective Date” means the date upon which this Agreement is executed between the Parties. 
“Emergency Condition” refers to a situation in which AEPCO has exhausted all available 
resource options and can no longer meet its expected load obligations, or when an abnormal system 
condition exists that requires automatic or immediate manual action to prevent or limit the failure 
of transmission facilities or generation resources that could adversely impact the reliability of the 
electric system. 
“Energy Storage Services” or “ESS” means the acceptance of Charging Energy at the Receipt 
Point, the storing of energy in the BESS, and the delivery of Discharge Energy from the BESS at 
the Delivery Point in compliance with the ESS Unit Capabilities (as that term is defined Service 
Provider Agreement), and subject to the terms and conditions of the Service Provider Agreement. 
“Environmental Attributes” means all attributes, aspects, characteristics, claims, credits, 
benefits, reductions, offsets or allowances of an environmental nature, including Renewable 
Energy Certificates, that, at any point during the Term, are created or otherwise arise from the 
Generation Facility’s delivery of electricity from renewable energy resources in contrast with the 
generation of electricity using nuclear or fossil fuels or other traditional resources. Forms of such 
attributes include any and all environmental air quality credits, green credits, including carbon 
credits, emissions reduction credits, certificates, tags, offsets, allowances, or similar products or 
rights, howsoever entitled, (i) resulting from the avoidance of the emission of any gas, chemical,

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or other substance, including mercury, nitrogen oxide, sulfur dioxide, carbon dioxide, carbon 
monoxide, particulate matter or similar pollutants or contaminants of air, water or soil, gas, 
chemical, or other substance, and (ii) attributable to the generation, purchase, sale or use of energy. 
Environmental Attributes include those currently existing or arising after the Commercial 
Operation Date under local, state, regional, federal, or international legislation or regulation 
relevant to the avoidance of any emission described above under any governmental, regulatory or 
voluntary program, including the United Nations Framework Convention on Climate Change and 
related Kyoto Protocol or other programs, laws or regulations. Environmental Attributes include 
the reporting rights related to any such attributes, aspects, characteristics, claims, credits, benefits, 
reductions, offsets or allowances, including the right of a person to report the ownership thereof in 
compliance with federal or state law, if applicable, or otherwise to a federal or state agency or any 
other person.  
“Equitable Defenses” means any bankruptcy, insolvency, reorganization and other laws affecting 
creditors’ rights generally, and with regard to equitable remedies, the discretion of the court before 
which proceedings to obtain same may be pending. 
“Event of Default” has the meaning specified in Section 6.1 of this Agreement. 
“Expected Commercial Operation Date” means December 1, 2027, as that date may be extended 
by written agreement of the Parties or pursuant to the terms of the Service Provider Agreement. 
“Force Majeure” means an event or circumstance which prevents one Party from performing its 
obligations under this Agreement, which event or circumstance is not within the reasonable control 
of, or the result of the negligence of, the Claiming Party, and which, by the exercise of due 
diligence, the Claiming Party is unable to overcome or avoid or cause to be avoided. Force Majeure 
shall not be based on economic hardship, including, without limitation, (i) the loss of Participant’s 
markets; (ii) Participant’s inability to economically use or resell the Product purchased hereunder; 
(iii) AEPCO’s ability to sell the Product at a price greater than the rates set forth in Exhibit C, or 
(iv) any amendment, modification, passage of a superseding act, or repeal of any applicable law 
related to Environmental Attributes.  
“Generation Facility” means the solar photovoltaic electric generation plant, including all electric 
power generation equipment, controls, meters, switches, connections, conduit, wires and other 
equipment connected to the transmission provider’s interconnection facilities and installed and 
operated by Service Provider as a fixture on the Premises for the purposes of providing electric 
power to Participant under the Agreement. If the final capacity of the Generation Facility is 
different than 400 MWAC, the Parties shall adjust the Participant’s Subscription Share and final 
capacity in accordance with Section 3.4 of the Subscription Agreement.  
“Governmental Authority” means any federal, state, or local government exercising jurisdiction 
over either Party or the Generation Facility, including any agency, court, or instrumentality of any 
such government exercising executive, legislative, judicial, regulatory, or administrative functions. 
Governmental Authority shall not include any entity that is a Party to this Agreement. 
“Indemnified Party” has the meaning specified in Section 8.1. 
“Indemnifying Party” has the meaning specified in Section 8.1.

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“Interest Rate” means, for any date, the lesser of (a) the applicable rate of interest under AEPCO’s 
Committed Line of Credit, or (b) the per annum rate of interest equal to the prime lending rate as 
may from time to time be published in The Wall Street Journal under “Money Rates” on such day 
(or if not published on such day on the most recent preceding day on which published) or (c) the 
maximum rate permitted by applicable law.  
“Metering Point” means the points as measured by metering devices as further described in 
Section 4.4. 
“MWAC” means megawatt alternating electric current. 
“MWh” means megawatt-hour(s).  
“Non-Defaulting Party” has the meaning specified in Section 6.2. 
“OATT” means AEPCO’s Open Access Transmission Tariff, as it may be modified from time to 
time. 
“O&C Committee” has the meaning specified in Section 3.5. 
“Participant” has the meaning set for in the Preamble. 
“Participant’s Agent” means an individual or entity, other than AEPCO, if applicable, authorized 
to act on behalf of a Participant within the scope of authority granted in writing by the Participant, 
as may be identified in Exhibit F. 
“Premises” means the land on which the Project is located. 
“Product” means, collectively, the Solar Output and the Storage Product. 
"Project” has the meaning set forth in the recitals. 
“Prudent Utility Practice(s)” means the practices, methods, and acts (including the practices, 
methods, and acts engaged in or approved by a significant portion of the solar power generation 
industry serving public utilities, or approved by WECC and/or NERC) that, at a particular time, in 
the exercise of reasonable judgment in light of the facts known or that should reasonably have 
been known at the time a decision was made, would have been expected to accomplish the desired 
result in a manner consistent with law, regulation, permits, codes, standards, reliability, safety, 
environmental protection, economy, and expedition.  
“Receipt Point” means the Project’s Energy Storage System Metering Point. 
“Renewable Energy Certificate” or “REC” is the certificate that evidences the ownership of 
Environmental Attributes that have been generated by the Project and certified by the Western 
Renewable Energy Generation Information System (WREGIS). 
“Replacement Price” means the price at which Participant, acting in a commercially reasonable 
manner, purchases at the Delivery Point a replacement for any Solar Output not delivered by

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AEPCO, or at Participant’s option, the market price at the Delivery Point for such Solar Output 
not delivered as determined by Participant in a commercially reasonable manner; provided, 
however, in no event shall such price include any penalties, ratcheted demand or similar charges, 
nor shall Participant be required to utilize or change its utilization of its owned or controlled assets 
or market positions to minimize AEPCO’s liability. For the purposes of this definition, Participant 
shall be considered to have purchased a replacement to the Solar Output to the extent Participant 
shall have entered into one or more arrangements in a commercially reasonable manner whereby 
Participant repurchases its obligation to sell and deliver the Solar Output to another party at the 
Delivery Point or any other mutually agreed upon delivery point in the instance that the Delivery 
Point is not the most commercially reasonable delivery point at the time of replacement. 
“Representative” means a Party’s employee, officer, director, member, manager, contractor, 
agent, accountant, or attorney. 
“Revised Subscription Share” has the meaning set forth in Section 6.5. 
“Sales Price” means the price at which AEPCO, acting in a commercially reasonable manner, 
resells at the Delivery Point any component of the Product not received by Participant (including 
Economic Curtailment Energy), deducting from such proceeds any (i) costs reasonably incurred 
by AEPCO in reselling such Product and (ii) additional transmission charges, if any, reasonably 
incurred by AEPCO in delivering such Product to the third party purchasers, or at AEPCO’s 
option, the market price at the Delivery Point for such Product not received as determined by 
AEPCO in a commercially reasonable manner; provided, however, in no event shall such price 
include any penalties, ratcheted demand or similar charges, nor shall AEPCO be required to utilize 
or change its utilization of its owned or controlled assets, including contractual assets, or market 
positions to minimize Participant’s liability. For purposes of this definition, AEPCO shall be 
considered to have resold such Product to the extent AEPCO shall have entered into one or more 
arrangements in a commercially reasonable manner whereby AEPCO repurchases its obligation to 
purchase and receive the Product from another party at the Delivery Point. If the Delivery Point is 
not the most commercially reasonable delivery point at the time of resale, the Parties may agree to 
another delivery point. 
“Scheduled Outage” has the meaning specified in Section 3.3. 
“Service Provider” has the meaning set forth in the recitals. 
“Service Provider Agreement” has the meaning set forth in the recitals and is expressly subject 
to Section 10.16 in its entirety. 
“Solar Output” means the Participant’s Subscription Share of all of the alternating current 
electricity and VAR (KVar) output produced by the Generation Facility, less Station Use Energy 
for the Generation Facility and less transformation and transmission losses, if any, on a unit-
contingent basis; Solar Output includes all Capacity Rights and Environmental Attributes 
generated by the Generation Facility and shall be delivered either 1) as metered at the Delivery 
Point in accordance with Section 4.4, or 2) delivered as Charging Energy to, and metered at, the 
Receipt Point.

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“Station Use Energy” means the energy used to power the lights, motors, temperature control 
systems, control systems and other electrical loads that are necessary for operation of the Project 
during periods in which the Project is idle (meaning that the Solar Facility is not generating and 
the ESS is not charging or discharging, as applicable, in accordance with Service Provider 
Agreement). Service Provider is solely responsible, at its sole cost and expense, for procuring and 
providing all Station Use Energy. 
“Storage Product” means the Energy Storage Services and all associated Capacity Rights, 
Ancillary Services, and Environmental Attributes. 
“Subscribers” shall mean all entities that have a Subscription Share of the Solar Output and/or 
the Storage Product. 
“Subscription Agreement” has the meaning set forth in the recitals. 
“Subscription Share” shall mean a percentage share of the cost responsibility and right to the 
Solar Output of the Generation Facility which for Participant is 6.25% and/or to the Storage 
Product of the BESS which for Participant is 5.00%, as may be modified from time to time 
pursuant to Section 2.1(c) and Section 6.5. 
“Taxes” means any federal, state, and local ad valorem, property, occupation, generation, 
privilege, sale, use, consumption, excise, transaction, and other taxes, regulatory fees, surcharges 
or other similar charges, but shall not include any income taxes or similar taxes imposed on 
AEPCO’s revenues due to the sale of any component of the Product under this Agreement, which 
shall be AEPCO’s responsibility. 
“Term” has the meaning specified in Section 2.2. 
“Test Energy” means all Solar Output generated by the Generation Facility and delivered to 
Participant and all Discharge Energy during the Test Period. 
“Test Period” means the period commencing on the day the Generation Facility is energized for 
a period of no more than one-hundred and twenty (120) days prior to the Commercial Operation 
Date. 
“Unscheduled Outage” has the meaning specified in Section 3.4. 
“Western Electricity Coordinating Council” means the regional entity responsible for 
coordinating and promoting bulk electric system reliability in the Western Interconnection  
“WECC Preschedule Calendar” means the annual preschedule calendar set by WECC that 
defines the timing for day-ahead trading and scheduling of energy around holidays and the 
beginning of new months. 
1.2 
Usage of Certain Terms and Phrases. Unless the context or express provisions of this 
Agreement otherwise requires, (a) words of any gender include each other gender; (b) 
words using the singular or plural number also include the plural or singular number, 
respectively; (c) the terms “hereof,” “herein,” “hereby” and derivative or similar words

11 
refer to this entire Agreement; and (d) the terms “Article,” “Provision” or “Section” refer 
to the specified Article, Provision or Section of this Agreement. Whenever this Agreement 
refers to a number of days, such number shall refer to calendar days unless Business Days 
are specified. Any reference to a person or firm includes its successors and assigns. 
References to articles, sections, exhibits, appendices, schedules, and attachments means 
the articles, sections, exhibits, appendices, schedules, and attachments of this Agreement. 
References to this “Agreement” include any relevant articles, sections, exhibits, 
appendices, schedules, and attachments of this Agreement. If any payment, or performance 
of any non-monetary obligation, is due on a day that is not a Business Day, it shall be 
deemed due the next following Business Day. “Include” or “including” shall be deemed to 
be followed by “without limitation.”  
ARTICLE II. CONDITIONS, TERM, TERMINATION 
2.1 
Conditions Precedent; Replacement of Subscription Agreement; Step-up Obligation. 
a) The effectiveness of this Agreement and the Parties’ obligations hereunder shall be expressly 
conditioned upon approval by each Party’s governing board and receipt of all necessary 
Approvals and Permits. 
b) The Parties acknowledge and agree that on the Commercial Operation Date, the terms and 
conditions of the Subscription Agreement shall be superseded in their entirety by the terms and 
conditions of this Agreement, except that Section 7 of the Subscription Agreement and any 
other provisions of the Subscription Agreement required to give effect to the intent of the 
parties as to Section 7 shall survive and remain in full force and effect in accordance with the 
terms thereof. 
c) The Parties acknowledge and agree that Participant (and each Subscriber to any component of 
the Product pursuant to the terms of such Subscriber’s power purchase and energy storage 
agreement with AEPCO) is obligated to, and shall, increase its Subscription Share to the 
Revised Subscription Share in the event that AEPCO experiences an event of default with a 
Subscriber (“Step-up Obligation”), as provided in Section 6.5. 
d) Intentionally Blank.  
2.2 
Term. This Agreement shall commence on the Effective Date and shall continue for a 
period that is twenty (20) years from the Commercial Operation Date (“Term”). Upon 
termination of the Agreement, Participant shall have no further obligations or rights related 
to the Product. 
2.3 
Termination. In addition to a termination for an Event of Default under Article VI, 
AEPCO may terminate this Agreement without liability to Participant if AEPCO 
terminates the Service Provider Agreement due to a Service Provider event of default. 
Participant may terminate this Agreement without liability to AEPCO if AEPCO 
terminates the Service Provider Agreement due to a Service Provider event of default under 
the Service Provider Agreement. In the event of a termination of this Agreement due to a 
termination of the Service Provider Agreement, AEPCO shall pass through any damages, 
liquidated damages or termination payments received from Service Provider, less any costs

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reasonably incurred by AEPCO in collecting such payments or damages, to Participant, 
based on Participant’s Subscription Share.  
ARTICLE III.  INSTALLATION AND OPERATION OF THE GENERATION 
FACILITY AND THE BESS 
3.1 
Service Provider Agreement. As between the Parties, AEPCO shall be directly 
responsible for all costs and the performance of all obligations under the Service Provider 
Agreement. 
3.2 
Commercial Operation. AEPCO shall use commercially reasonable efforts to cause the 
Project to achieve Commercial Operation on or before the Expected Commercial Operation 
Date. If Commercial Operation will not be achieved by the Expected Commercial 
Operation Date, AEPCO shall provide notice to Participant and shall work with Service 
Provider to cause the Project to achieve Commercial Operation. Further, subject to Article 
VII, to the extent failure to achieve Commercial Operation by the Expected Commercial 
Operation Date entitles AEPCO to liquidated damages under the Service Provider 
Agreement (“Delay Damages” as defined in the Service Provider Agreement), AEPCO 
shall pass such liquidated damages through to Participant based on Participant’s 
Subscription Share. 
3.3 
Interruption of Service – Scheduled Outages. The scheduled interruption from time to 
time of the Project may be necessary in order to install, operate, maintain, or repair the 
Project (“Scheduled Outages”). AEPCO shall provide Participant with a notice of the 
Scheduled Outages on an annual basis and shall update such notice quarterly to reflect any 
known changes to the Scheduled Outages. AEPCO shall consult with Participant regarding 
any Scheduled Outage periods and shall use commercially reasonable efforts to 
i) coordinate Scheduled Outages with Service Provider in a manner which minimizes cost 
and disruption to Participant, and ii) minimize the length, duration, and scope of the 
outages. AEPCO shall have no liability or otherwise have an obligation to deliver the 
Product to Participant in the event of a Scheduled Outage. 
3.4 
Interruption of Service – Unscheduled Outages. The interruption from time to time of 
the Project may be required in the case of an emergency or unexpected interruption of the 
Project (“Unscheduled Outages”). In the event of an Unscheduled Outage, AEPCO will 
use commercially reasonable efforts to respond within one (1) Business Day following 
notification either by remote monitoring systems or by Participant of such Unscheduled 
Outage, and will cause Service Provider to complete needed repairs as soon as reasonably 
practicable and in accordance with Prudent Utility Practice and the terms of the Service 
Provider Agreement to restore the Project to operation. AEPCO shall have no liability or 
otherwise have an obligation to deliver the Product to Participant in the event of an 
Unscheduled Outage. For the avoidance of doubt, Unscheduled Outages include 
curtailments of the Solar Output or limitations of the BESS from accepting Charging 
Energy or releasing Discharge Energy imposed by a transmission provider, balancing 
authority area, reliability coordinator, or similar entity for reliability, emergency, or similar 
purposes.

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3.5 
Operation and Construction Committee. The Pinal Operation and Construction 
Committee (“O&C Committee”) formed pursuant to Section 7 of the Subscription 
Agreement shall continue for the Term of this Agreement and shall have the same 
representation and responsibilities with respect to the operation and maintenance of the 
Generation Facility and the BESS as provided in the Subscription Agreement. 
3.6 
Test Energy. Participant shall purchase its Subscription Share of all Test Energy from the 
Generation Facility provided at the Delivery Point at fifty percent (50%) of the rates 
provided for in Exhibit C and Participant shall be responsible for costs and/or credits of 
its Subscription Share of Discharge Energy associated with Test Energy from the 
Generation Facility.  
 
 
ARTICLE IV. POWER PURCHASE AND ENERGY STORAGE REQUIREMENT 
4.1 
Purchase and Sale of the Product.  
a) Commencing on the Commercial Operation Date and continuing throughout the Term, 
AEPCO shall sell to Participant and deliver to Participant at the Delivery Point, and Participant 
shall receive and purchase from AEPCO, at the rates provided for in Exhibits C and D, 
Participant’s Subscription Share of the Product, pursuant to the terms of this Agreement.  
b) If AEPCO fails to deliver any component of the Product and such failure is not excused under 
the terms of this Agreement or the Service Provider Agreement, AEPCO shall provide a credit 
to the Participant for the cost difference, if the Replacement Price exceeds the applicable rate 
in Exhibit C, but Participant shall not be entitled to terminate this Agreement or to withhold 
payments required to be made pursuant to this Agreement except as provided in Section 6.1(a). 
Participant shall provide reasonable proof of the Replacement Price to AEPCO and thereafter, 
AEPCO shall provide a credit to Participant on the next monthly billing statement. 
c) If Participant fails to receive any component of the Product and such failure is not excused 
under the terms of this Agreement, AEPCO shall make commercially reasonable efforts to 
remarket the Product at a point of delivery that maximizes the net economic value of the 
Product, but AEPCO shall not be entitled to terminate this Agreement or to withhold payments 
required to be made pursuant to this Agreement, except as provided in Section 6.1(a). If 
AEPCO can successfully remarket the Product to a Subscriber or other entity, AEPCO will 
calculate the difference between the cost of the Product using the rates set forth in Exhibit C 
and the Sales Price. If the rates set forth in Exhibit C exceed the Sales Price, AEPCO shall bill 
and the Participant shall pay, the difference in the next monthly billing statement. If the rates 
set forth in Exhibit C are less than the Sales Price, then AEPCO shall provide a credit for the 
difference to Participant on the next monthly billing statement. If the Product is sold without 
RECs pursuant to this Section 4.1(c), Participant shall be entitled to the RECs associated with 
such sale.

14 
d) In the event that AEPCO cannot remarket the Product, the Sales Price shall be zero, unless 
AEPCO implements a Buyer Curtailment under the Service Provider Agreement, in which 
case, Participant shall pay AEPCO for its share of Deemed Energy for Participant’s failure to 
receive per Article II of the Service Provider Agreement, plus applicable Production Tax Credit 
(PTC) value, as defined in the Service Provider Agreement. 
4.2 
Generation Delivery.  
a) Solar Output produced by the Generation Facility will be metered and allocated based on the 
Subscription Share of Participant and delivered to either: (i) Participant at the Delivery Point; 
or (ii) the BESS for storage and later delivery to Participant, each in accordance with 
Participant’s or Participant’s Agent’s scheduling instructions or, in the absence of such 
scheduling instructions, in accordance with AEPCO’s good faith business judgment.  
b) Participant shall arrange and be responsible for any third-party transmission service required 
to deliver power from the Delivery Point to Participant load and shall schedule or arrange for 
scheduling services with all applicable transmission providers to accept scheduled energy from 
the Delivery Point, and Participant shall be responsible for all costs or charges imposed on or 
associated with the transmission service after the Delivery Point. In addition, Participant shall 
provide AEPCO with timely and adequately detailed information necessary for AEPCO to 
meet its responsibility to submit e-tags associated with delivery of the scheduled energy to the 
Participant. Participant and AEPCO shall agree in writing upon the format and means of 
communication of such information. 
c) AEPCO shall provide Generator Imbalance Service, at the rates and terms provided in its 
OATT, for any difference between scheduled energy and Participant’s allocated Solar Output. 
d) In the event AEPCO incurs cost for ancillary services in accordance with the AEPCO OATT, 
Participant shall be responsible to AEPCO for paying for such ancillary services pursuant to 
the OATT. 
e) AEPCO will schedule Discharge Energy in the overall best interest of the Subscribers based 
on optimization of the aggregate schedules of Participant and all Subscribers and in accordance 
with Prudent Utility Practice.  
4.3 
Discharge Energy Delivery.  
a) Discharge Energy will be metered at the Metering Point and allocated based on the 
Subscription Share of Participant and delivered to Participant at the Delivery Point.  
b) AEPCO shall bill Participant for any Discharge Energy delivery charge as set forth in 
Exhibit D. 
c) Except as provided in this Section 4.3(c), Participant shall arrange and be responsible for any 
third-party transmission service required to deliver power from the Delivery Point to 
Participant load and shall schedule or arrange for scheduling services with all applicable 
transmission providers to accept scheduled energy from the Delivery Point, and shall be 
responsible for all costs or charges imposed on or associated with the transmission service after

15 
the Delivery Point. In addition, Participant shall provide AEPCO with timely and adequately 
detailed information necessary for AEPCO to meet its responsibility to submit e-tags 
associated with delivery of the scheduled energy to the Participant. Participant and AEPCO 
shall agree in writing upon the format and means of communication of such information. 
d) AEPCO shall provide imbalance services, at the rates and terms provided in its OATT, for 
Participant’s Subscription Share of any difference between the Project’s scheduled and 
metered energy.  
e) In the event AEPCO incurs cost for other ancillary services in accordance with its OATT, 
Participant shall be responsible to AEPCO for paying for such ancillary services pursuant to 
the OATT.  
4.4 
Metering. AEPCO shall cause to be procured, installed, and maintained all meters that 
may be necessary for measuring the Solar Output, Charging Energy, Discharge Energy, 
and Station Use Energy pursuant to Section 5.1 of the Service Provider Agreement. Any 
adjustment made for inaccurate meters pursuant to Section 5.3 of the Service Provider 
Agreement shall be applied to Participant according to Participant’s Subscription Share. 
Any correction in billings or payments resulting from a correction in the meter records 
shall be made in the next monthly billing or payment rendered, in accordance with Section 
4.6(d). Such correction, when made, shall constitute full adjustment of any claim between 
AEPCO and Participant arising out of such inaccuracy of metering equipment. 
4.5 
Billing and Payment.  
a) As soon as practicable after the end of each calendar month, AEPCO will render to Participant 
and Participant’s Agent an invoice, or as a separate line-item on its existing monthly bill, for 
the net payment obligations, if any, incurred hereunder during the preceding month. All 
invoices shall be due and payable in accordance with AEPCO’s current billing procedures and 
invoice instructions, or otherwise, on or before the later of the twentieth (20th) day of each 
month, or the tenth (10th) day after receipt of the invoice by the Participant or the Participant’s 
Agent. Participant will make payments by electronic funds transfer, or by other mutually 
agreeable method(s), to the account designated by AEPCO. Any amounts not paid by the due 
date will be deemed delinquent and will accrue interest at the Interest Rate, such interest to be 
calculated from and including the due date but excluding the date the delinquent amount is 
paid in full. Any discrepancies regarding amounts billed in an invoice shall be resolved in the 
next month’s invoice, or as soon as possible thereafter. 
b) Participant shall have an unconditional obligation to make all payments to AEPCO required 
hereunder at the rates and charges and on the terms and conditions set forth herein and in 
Exhibits C and D, based on Participant’s Subscription Share of the Product. Participant shall 
make all payments of charges for the Product provided for under this Agreement, including 
without limitation, rates and charges resulting from the default of one or more Subscribers or 
otherwise, as the case may be, in a timely manner pursuant to and to the extent of AEPCO’s 
obligations under the Service Provider Agreement. Payments by Participant hereunder, and the 
obligation to pay, shall be absolute and unconditional and shall not be subject to any reduction, 
whether by offset, set-off, recoupment or otherwise, and shall not be conditioned upon

16 
performance or limited by Participant under any other wholesale power sales, power purchase 
or power marketing agreements entered into by AEPCO. 
c) Notwithstanding anything to the contrary in this Agreement, AEPCO may review the rates and 
charges for electric energy and capacity provided hereunder. If such rates are insufficient to 
pay all of AEPCO’s costs and liabilities under the Service Provider Agreement and AEPCO’s 
development costs, including legal fees (unless such legal fees relate to gross negligence by 
AEPCO), in connection with the Project, AEPCO may revise such rates so that amounts paid 
under this Agreement, together with amounts paid under all other Subscribers’ agreements, are 
sufficient to enable AEPCO to pay all of such obligations. If such rates or charges are to be 
revised, AEPCO shall cause a notice in writing to be provided to Participant at least ninety 
(90) days prior to the effective date of such revisions, which notice shall set forth the proposed 
revisions of the rates or charges with the effective date thereof, and the basis upon which the 
rates or charges are proposed to be adjusted and set. Participant agrees that any such revised 
rates and charges set by AEPCO pursuant to its authority herein shall be substituted for the 
rates herein provided, and Participant agrees to pay for the Product provided by AEPCO 
hereunder after the effective date of any such revised rates and charges pursuant to such revised 
rates and charge. 
d) Section 4.5 (b) and (c) shall not be construed to release AEPCO from the performance of any 
of its obligations established in this Agreement or, except to the extent expressly provided in 
this Agreement, prevent or restrict Participant from bringing suit for enforcement of, or 
damages arising from, any rights that it may have against AEPCO under this Agreement or 
under any provision of law, and to compel AEPCO to pay any damages awarded by a court 
of competent jurisdiction as awarded in a final judgment. 
4.6 
Audit Rights.  
a) Participant, through its authorized representatives, shall have the right to examine and copy the 
records of AEPCO to the extent reasonably necessary to verify the accuracy of any statement, 
charge or computation made hereunder. All costs and expenses of such audits will be the sole 
responsibility of the Participant. Participant will have the right to conduct such an audit no 
more frequently than once each calendar year.  
b) Upon request, AEPCO shall provide to Participant statements evidencing the quantities of 
Solar Output, Charging Energy, and Discharge Energy as metered at the Metering Point and 
all costs contained within the rates set out in Exhibit C.  
c) AEPCO will maintain adequate financial records and documents to support all costs billed to 
Participant. Such financial records and documents will be maintained for a period of at least 
three (3) years following the performance and/or satisfaction of obligations arising under this 
Agreement or until any audit in progress is completed. 
d) If any statement is found to be inaccurate, a corrected statement shall be issued within thirty 
(30) days after resolution of the audit findings and any amount due by either Party to the other 
Party thereunder will be promptly paid, without interest, no later than the thirtieth (30th) day 
after receipt of the corrected statement. Notwithstanding the foregoing, no adjustment shall be

17 
made with respect to any statement or payment hereunder unless a Party questions the accuracy 
of such payment or statement within three (3) years after the date of such statement or payment. 
4.7 
Liquidated Damages. To the extent AEPCO is entitled to liquidated damages due to a 
failure of the Generation Facility or the BESS to meet the Availability Guarantee as defined 
in the Service Provider Agreement, AEPCO shall pass such liquidated damages through to 
Participant based on Participant’s Subscription Share. Liquidated damages shall be applied 
as an offset to Participant’s payment obligations, if any, incurred and owing under this 
Agreement and shall be reflected on Participant’s invoice once such liquidated damages 
are received by AEPCO. In the event liquidated damages are expected to be greater than 
Participant’s incurred and owing payment obligation for two monthly billing cycles under 
this Agreement, the remaining liquidated damages shall be paid to Participant within thirty 
(30) days of such determination. AEPCO shall use commercially reasonable efforts to 
enforce its right to liquidated damages on behalf of the Subscribers and Participant. For the 
avoidance of doubt, all liquidated damages recovered pursuant to the Availability 
Guarantee shall be passed to Subscribers (and Participant) less any costs AEPCO 
reasonably incurs to collect liquidated damages. 
4.8 
Solar Forecast. AEPCO shall share the forecast delivered by Service Provider or Service 
Provider’s agent to Participant as soon as practical. 
4.9 
Operation and Scheduling of BESS. Participant or Participant’s Agent shall provide 
AEPCO with an hourly schedule of targeted charging quantities and discharging quantities 
for a future time period (“Participant Requested BESS Schedule”) in accordance with 
the WECC Preschedule Calendar for any day during which the Participant Requested 
BESS Schedule will be dispatched. 
a) Participant or Participant’s Agent may purchase or otherwise procure or supply any energy 
from the wholesale market or other resources for delivery to and storage in the BESS and shall 
retain title to and risk of loss of any such energy while it is stored in the BESS, unless such 
loss is occasioned by AEPCO’s or Service Provider’s negligence, gross negligence or willful 
misconduct in operating and maintaining the BESS. For avoidance of doubt, Participant is 
responsible for transmission to import Charging Energy from sources other than the Generating 
Facility to the Receipt Point. 
b) In the absence of sufficient supply scheduled to the BESS, AEPCO will adjust the Participant 
Requested BESS Schedule down to match the total supplied quantity. 
4.10 
Participant’s Economic Curtailment. Participant or Participant’s Agent may provide 
AEPCO with an hourly schedule of targeted reductions (“Economic Curtailment 
Schedule”) of Solar Output (“Economic Curtailment Energy”) for a future time period 
no later than one (1) day prior, and in accordance with the WECC Preschedule Calendar, 
to any day during which the targeted reductions of Solar Output will take place.  
a) AEPCO will first attempt to remarket Economic Curtailment Energy to other Subscribers, then 
attempt to remarket the Economic Curtailment Energy to other entities. If AEPCO can 
successfully remarket the Economic Curtailment Energy to a Subscriber or other entity,

18 
AEPCO will calculate the difference between the cost of the Economic Curtailment Energy 
calculated using the rates set forth in Exhibit C and the Sales Price of the Economic 
Curtailment Energy.  If the cost of the Economic Curtailment Energy calculated using the rates 
set forth in Exhibit C exceeds the Sales Price of the Economic Curtailment Energy, AEPCO 
shall bill and the Participant shall pay, the difference in the next monthly billing statement. If 
the Sales Price of the Economic Curtailment Energy exceeds the cost of the Economic 
Curtailment Energy calculated using the rates set forth in Exhibit C, then AEPCO shall 
provide a credit to Participant on the next monthly billing statement. If the Economic 
Curtailment Energy is sold without RECs pursuant to this Section 4.10(a), Participant shall be 
entitled to the RECs associated with such Economic Curtailment Energy. 
b) In the event that AEPCO cannot remarket the Economic Curtailment Energy, the Sales Price 
shall be zero, unless AEPCO implements a Buyer Curtailment under the Service Provider 
Agreement, in which case, Participant shall pay AEPCO for its share of Deemed Energy for 
Participant’s curtailment per Article II of the Service Provider Agreement, plus applicable 
Production Tax Credit (PTC) value, as defined in the Service Provider Agreement. 
4.11 
AEPCO’s Use of Participant BESS Capacity. For any day that Participant elects not to 
charge or discharge any or all of its Participant Share of the BESS Capacity, AEPCO shall 
not utilize Participant’s Share of BESS Capacity without Participant’s express written 
permission, unless there is an energy or transmission Emergency Condition. If AEPCO 
utilizes Participant’s Share of the BESS Capacity in an Emergency Condition, AEPCO 
shall pay Participant for such use of energy and/or capacity at the replacement cost for the 
hours the BESS Capacity was originally scheduled by Participant or at the applicable real-
time locational marginal price if Participant’s BESS Capacity was not scheduled. 
ARTICLE V. REPRESENTATIONS AND WARRANTIES; TITLE AND RISK OF LOSS 
5.1 
Representations and Warranties. On the Effective Date and on the Commercial 
Operation Date, each Party represents and warrants to the other Party that:  
a) it is duly organized, validly existing and in good standing under the laws of the jurisdiction of 
its formation; 
b) neither the execution, delivery or performance of this Agreement nor compliance herewith will 
(a) violate any provision of the certificate of formation or operating agreement (or other 
comparable governing documents) of such Party, (b) result in a violation, breach, or 
termination of, or constitute (with or without notice or lapse of time or both) a default under 
(or give rise to any right of termination, cancellation, acceleration, or any obligation to repay), 
any of the terms, conditions, or provisions of any indenture, mortgage, note, bond, 
encumbrance, license, contract, lease, franchise, permit, or other agreement to which such 
Party is a party, or (c) violate any order, writ, judgment, injunction, decree, statute, ordinance, 
rule, or regulation of any Governmental Authority applicable to such Party; 
c) the execution, delivery and performance of this Agreement is within its powers, has been duly 
authorized by all necessary action, and does not violate any of the terms and conditions in its

19 
governing documents, any contracts to which it is a party or any law, rule, regulation, order or 
the like applicable to it; 
d) this Agreement and each other document executed and delivered in accordance with this 
Agreement constitutes its legally valid and binding obligation enforceable against it in 
accordance with its terms, subject to any Equitable Defenses; 
e) it is not Bankrupt and there are no proceedings pending or being contemplated by it or, to its 
knowledge, threatened against it, which would result in it being or becoming Bankrupt; 
f) there is not pending or, to its knowledge, threatened against it or any of its Affiliates any legal 
proceedings that could materially adversely affect its ability to perform its obligations under 
this Agreement; 
g) no Event of Default with respect to it has occurred and is continuing and no such event or 
circumstance would occur as a result of its entering into or performing its obligations under 
this Agreement; 
h) it is acting for its own account, has made its own independent decision to enter into this 
Agreement and as to whether this Agreement is appropriate or proper for it based upon its own 
judgment, is not relying upon the advice or recommendations of the other Party in so doing, 
and is capable of assessing the merits of and understanding, and understands and accepts, the 
terms, conditions and risks of this Agreement; 
i) it has entered into this Agreement in connection with the conduct of its business and it has the 
capacity or ability to make or take delivery of the Product referred to;  
j) the material economic terms of this Agreement are subject to individual negotiation by the 
Parties; and 
k) it has the financial capacity, including sufficient funds available, to perform all of its 
obligations under this Agreement. 
5.2 
Title and Risk of Loss.  
a) Title to and risk of loss related to the Solar Output shall transfer from AEPCO to Participant 
at the Delivery Point. AEPCO warrants that Solar Output will be free and clear of all liens, 
security interests, claims and encumbrances or any interest therein or thereto by any person 
arising prior to the Delivery Point. 
b) Title to and risk of loss related to Charging Energy and Discharge Energy shall remain at all 
times with Participant, subject to the provisions of Section 4.9(a). Title to and risk of loss 
related to all other components of the Storage Product shall transfer from AEPCO to 
Participant at the Delivery Point. AEPCO warrants that it will deliver to Participant the Storage 
Product free and clear of all liens, security interests, claims and encumbrances or any interest 
therein or thereto by any person arising prior to the Delivery Point, except to the extent such 
liens, security interests, claims or encumbrances are attached to the Charging Energy when 
purchased by Participant.

20 
5.3 
Legal and Financial Funding Opinion. Prior to the execution of this Agreement, 
Participant shall provide an opinion from its legal counsel affirming subsection a and b 
below, and an opinion of its chief financial officer, legal counsel, senior financial officer, 
or department director (or similar position overseeing the utility) affirming subsection c 
below:  
a) Participant has obtained proper authorization under its governance documents for entering into 
and performing this Agreement; 
b) Participant, pursuant to the Agreement, can be sued and held liable for damages for its breach 
or non-performance of contractual obligations under this Agreement, and 
c) Based on its current financial position and resources as well as future economic forecasts, 
Participant anticipates having sufficient available, unrestricted funds to satisfy its payment 
obligations under this Agreement. 
 
ARTICLE VI. EVENTS OF DEFAULT, REMEDIES 
6.1 
Events of Default. An “Event of Default” shall mean, with respect to a Party (the 
“Defaulting Party”), the occurrence of any of the following: 
a) the failure to make, when due, any payment required pursuant to this Agreement if such failure 
is not remedied within three (3) Business Days after receipt of written notice of the failure to 
make payment; 
b) any representation or warranty made by such Party herein is false or misleading in any material 
respect when made or when deemed made or repeated, and such representation or warranty is 
not cured within sixty (60) calendar days after the other Party (the “Non-Defaulting Party”) 
gives the Defaulting Party a notice of the default; 
c) the failure to perform any material covenant or obligation set forth in this Agreement (except 
to the extent constituting a separate Event of Default), if such failure is not remedied within 
sixty (60) calendar days after written notice, unless, upon receiving such written notice, the 
receiving Party notifies the other Party that a Dispute exists as to whether an Event of Default 
under this Section 6.1(c) has occurred, in which case the Parties shall follow the procedures in 
Section 10.6 prior to either Party declaring an Event of Default; 
d) such Party becomes Bankrupt; 
e) such Party consolidates or amalgamates with, or merges with or into, or transfers all or 
substantially all of its assets to, another entity and, at the time of such consolidation, 
amalgamation, merger or transfer, the resulting, surviving or transferee entity fails to assume 
all the obligations of such Party under this Agreement to which it or its predecessor was a party 
by operation of law or pursuant to an agreement reasonably satisfactory to the other Party;  
f) Service Provider terminates the Service Provider Agreement due to an AEPCO event of 
default.

21 
g) AEPCO fails to provide a bill credit to Participant when due under Section 6.2(a).  
6.2 
Remedies. The following remedies are available pursuant to this Agreement upon an Event 
of Default: 
a) If AEPCO fails to provide any component of the Product as required hereunder, AEPCO shall 
promptly provide notice to Participant upon learning of a failure to deliver such component of 
the Product and use its best efforts to restore service to Participant. If AEPCO is, in AEPCO’s 
reasonable discretion, unable to restore or provide substitute service, AEPCO shall provide a 
bill credit to Participant for the reasonable direct and verifiable costs incurred by Participant 
to obtain and replace such component of the Product that AEPCO was unable to restore or 
provide, but Participant shall not be entitled to terminate this Agreement or to withhold 
payments required to be made pursuant to this Agreement.  In the event AEPCO’s failure to 
provide any component of the Product is due to any action or inaction by the Developer, the 
bill credit shall be limited to the amounts that AEPCO can recover from the Developer, less 
AEPCO’s costs of recovering such amounts.  A failure by AEPCO to provide a bill credit to 
Participant when due under this Section 6.2(a) shall be an Event of Default.  
b) If an Event of Default under Section 6.1(a) shall have occurred and be continuing, the Non-
Defaulting Party shall have the right but not the obligation to (i) withhold any payments due 
to the Defaulting Party under this Agreement, (ii) suspend performance, and (iii) terminate this 
Agreement. The rights of the Non-Defaulting Party are cumulative. 
c) Upon the occurrence of an Event of Default by Participant, and consistent with subsection (e) 
below, AEPCO shall have the right to sell any component of the Product to a third person 
(including any Subscribers) free and clear of any claims by Participant for the period during 
which AEPCO suspends performance hereunder, and Participant will make commercially 
reasonable efforts to facilitate AEPCO’s access to any transmission rights or facilities that may 
be required to make such sales, provided the net proceeds of such sales shall be credited against 
any setoff amounts owing from Participant to AEPCO. 
d) Upon termination of the Agreement, the Non-Defaulting Party shall have the right to receive 
from the Defaulting Party direct damages incurred by the Non-Defaulting Party in connection 
with an Event of Default, including during any applicable cure period. Such damages shall 
include the present value of the economic loss to it, including Costs, resulting from termination 
of this Agreement (if applicable). 
e) Each Party agrees that it has a duty to mitigate damages and covenants that it will use 
commercially reasonable efforts to minimize any damages it may incur as a result of the other 
Party’s performance or non-performance hereof. In the event the Product is not purchased or 
accepted by Participant, “commercially reasonable efforts” by AEPCO shall require AEPCO 
to use commercially reasonable efforts to maximize the value of the Product. 
6.3 
No Waiver. No waiver of any Event of Default by either Party shall be construed as a 
waiver of any subsequent Event of Default, and the failure to exercise any right or remedy 
hereunder shall not waive the right to exercise such right or remedy thereafter.

22 
6.4 
Limitation of Liability. The Parties confirm that the express remedies and measures of 
damages provided in this Agreement satisfy the essential purposes hereof. For breach of 
any provision for which an express remedy or measure of damages is provided, such 
express remedy or measure of damages shall be the sole and exclusive remedy, the Party’s 
liability shall be limited as set forth in such provision and all other remedies or damages at 
law or in equity are waived. If no remedy or measure of damages is expressly provided 
herein, the Party’s liability shall be limited to direct damages only. Such direct damages 
shall be the sole and exclusive remedy and all other remedies or damages at law or in equity 
are waived. Unless expressly herein provided, neither Party shall be liable for 
consequential, incidental, punitive, exemplary or indirect damages, lost profits or other 
business interruption damages, by statute, in tort or contract, under any indemnity provision 
or otherwise. It is the intent of the Parties that the limitations herein imposed on remedies 
and the measure of damages be without regard to the cause or causes related thereto, 
including the negligence of any Party, whether such negligence be sole, joint or concurrent, 
or active or passive. To the extent any damages required to be paid hereunder are 
liquidated, the Parties acknowledge that the damages are difficult or impossible to 
determine, or otherwise obtaining an adequate remedy is inconvenient and the damages 
calculated hereunder constitute a reasonable approximation of the harm or loss. 
Notwithstanding anything to the contrary, the Parties retain their rights to injunctive or 
equitable relief to the extent such relief is expressly permitted under this Agreement.   
6.5 
Participant Step-Up Obligations. If an Event of Default has occurred with respect to a 
Subscriber under such Subscriber’s power purchase and energy storage agreement with 
AEPCO related to the Project, a) AEPCO shall first use any available working capital or 
letter of credit from the defaulting Subscriber to cover any losses resulting from the Event 
of Default, b) AEPCO shall next attempt to remarket the Subscription Share of such 
Subscriber to other Subscribers, c) AEPCO shall then attempt to remarket any remaining 
portion of the Subscription Share of such Subscriber to third parties, and d) if there is any 
remaining portion of the Subscription Share of such Subscriber after such remarketing 
efforts, then Participant, pursuant to its obligations under this Agreement, has an obligation 
to purchase additional Product to make up for any such purchase shortfalls by the 
defaulting Subscriber. Upon thirty (30) days written notice from AEPCO, Participant 
(along with each other Subscriber pursuant to the terms of their power purchase and energy 
storage agreements with AEPCO), shall increase its Subscription Share in the applicable 
Product, if any, to an amount equal to its then-current Subscription Share multiplied by  the 
capacity of the defaulting Subscriber’s subscription share  (less any amount that has been 
successfully remarketed), such that Participant’s new Subscription Share, together with the 
subscription shares of all non-defaulting Subscribers, shall equal 100% (“Revised 
Subscription Share”).  AEPCO shall provide in the notice the increased amount of 
applicable Product that Participant and each Subscriber shall purchase due to the 
Subscriber Event of Default, and Participant shall purchase and pay for its increased 
allocation in accordance with the terms of this Agreement without the need for further 
action on behalf of AEPCO or Participant. For all purposes of this Agreement, the 
Participant’s Subscription Share shall thereafter equal the Revised Subscription Share. 
6.6 
Subscriber Defaults. If an Event of Default has occurred with respect to a Subscriber 
under such Subscriber’s power purchase and energy storage agreement with AEPCO

23 
related to the Project, AEPCO shall use commercially reasonable efforts to recover 
damages from the defaulting Subscriber on behalf of the non-defaulting Subscribers and 
Participant. For the avoidance of doubt, all damages recovered from the defaulting 
Subscriber, less any costs AEPCO reasonably incurs to collect such damages, shall be 
credited to the non-defaulting Subscribers and Participant based on Subscription Shares. 
 
ARTICLE VII. FORCE MAJEURE 
7.1 
General. To the extent either Party is prevented by Force Majeure from carrying out, in 
whole or part, its obligations under this Agreement and such Party (the “Claiming Party”) 
gives notice and details of the Force Majeure to the other Party as soon as practicable, then 
the Claiming Party shall be excused from the performance of its obligations (other than the 
obligation to make payments then due or becoming due with respect to performance prior 
to the Force Majeure). The Claiming Party shall remedy the Force Majeure with all 
reasonable dispatch. The non-Claiming Party shall not be required to perform or resume 
performance of its obligations to the Claiming Party corresponding to the obligations of 
the Claiming Party excused by Force Majeure. Except as otherwise provided herein, all of 
the provisions of this Agreement shall remain in full force and effect during Force Majeure. 
The Parties agree that for purposes of this Agreement, the obligation of Participant to make 
payments when due under this Agreement shall not be excused by any claim of Force 
Majeure, subject to AEPCO’s obligation to use commercially reasonably efforts to 
minimize Participant’s payment obligation, including AEPCO’s efforts to remarket the 
Product that maximizes the net economic value of the Product.  
7.2 
Additional Effects of Force Majeure.  
a) If a Force Majeure event is anticipated to prevent the Project from achieving Commercial 
Operation for a period of more than three hundred sixty-five (365) days, the Parties shall meet 
to determine the appropriate course of action. Either Party may terminate this Agreement, 
without liability to the other Party, for a Force Majeure event that prevents the Project from 
being placed into Commercial Operation later than three hundred sixty-five (365) days after 
the Expected Commercial Operation Date. 
b) If an event or events of Force Majeure prevents a Claiming Party from substantially performing 
its obligations under this Agreement for a consecutive period exceeding three hundred ninety-
five (395) days (despite the Claiming Party’s diligent efforts to remedy its inability to perform), 
then the other Party may terminate this Agreement by giving ten (10) days prior notice to the 
affected Party.  
c) Upon termination pursuant to this Section 7.2, neither Party will have any liability to the other 
Party with respect to the period following the effective date of such termination; provided, 
however, that this Agreement will remain in effect to the extent necessary to facilitate the 
settlement of all liabilities and obligations arising under this Agreement before the effective 
date of such termination. 
ARTICLE VIII.   INDEMNIFICATION

24 
8.1 
Indemnification. To the fullest extent permitted by Arizona law, each Party 
(“Indemnifying Party”) agrees to indemnify, defend, and hold the other Party and its 
Representatives and Affiliates (each, an “Indemnified Party”) harmless, from and against 
any and all claims, actions, costs (including reasonable attorneys’ fees), expenses, 
damages, and liabilities, arising out of or in connection with the Indemnifying Party’s or 
its Representatives’ respective activities to the extent that they are caused by the 
Indemnifying Party’s (a) material breach of any obligation, representation, or warranty 
created by this Agreement; or (b) negligent or willful acts or omissions in the conduct and 
performance under this Agreement including, but not limited to, liabilities attributable to 
breach of law or violation of Approvals and Permits applicable to the Premises and/or the 
Project, as the case may be. Notwithstanding the foregoing or anything expressed or 
implied herein to the contrary, an Indemnifying Party is excused from any indemnity 
obligation to each Indemnified Party and is not required to reimburse or indemnify any 
Indemnified Party for any claim to the extent such claim is due to the negligence or willful 
misconduct of the Indemnified Party.  
a) The Indemnified Party shall promptly notify the Indemnifying Party of any notice of a claim 
received that may result in a claim against the Indemnified Party along with a copy of any 
documents received. The Indemnifying Party may assume the defense of any claim, at its sole 
cost and expense, with counsel designated by the Indemnifying Party. The Indemnified Party 
will cooperate and consult with the Indemnifying Party in responding to and defending any 
such claim. If the potential Indemnifying Party does not assume the defense of the claim by 
providing notice to the Indemnified Party within thirty (30) days after notice of a claim is 
received, the Indemnified Party may provide notice to the Indemnifying Party of its intent to 
assume the defense of the claim. If the Indemnifying Party does not assume the defense within 
seven (7) days of such notice, the Indemnified Party may assume the defense of the claim at 
the sole cost and expense of the Indemnifying Party. Neither Party shall settle any claim 
covered by this Section 8.1 without prior written consent of the other Party, which consent 
shall not be unreasonably withheld or delayed.  
b) The duty to indemnify will continue in full force and effect notwithstanding the expiration or 
termination of this Agreement. 
8.2 
Insurance. Throughout the Term, AEPCO shall maintain the types and amounts of 
insurance coverage as would be maintained in accordance with Prudent Utility Practice. 
ARTICLE IX. CREDITWORTHINESS 
9.1 
Financial Information. AEPCO may require and Participant shall make available 
financial information reasonably needed to ascertain Participant’s ability to perform under 
this Agreement or to meet any other obligation which may accrue, including without 
limitation the obligation to pay damages in the event of failure to perform. 
9.2 
Credit Support. No later than the Commercial Operation Date, Participant shall fund and 
AEPCO shall maintain a working capital fund equal to three (3) months’ estimated charges 
under Sections 4.1, 4.2, and 4.3. All such estimates shall be prepared by AEPCO on the 
basis of the sum of the following: (i) the average of monthly estimated charges across the

25 
next twelve (12) months, assuming full dispatch of Solar Output for all reasonable solar 
production hours during each month of the year, multiplied by three (3), and (ii) the 
monthly estimated charge of Participant’s Subscription Share of the Storage Product, 
multiplied by three (3). Estimates shall be reviewed annually. The working capital fund 
shall be available to AEPCO to make timely payments of monthly invoices to Service 
Provider prior to receipt of payments from Participant of Participant’s invoices from 
AEPCO for its Subscription Share and to pay for losses as a result of an Event of Default, 
as provided in Section 6.5. Following any such drawdown of the working capital fund, the 
fund shall be replenished no later than the fifth (5th) Business Day of the following month. 
AEPCO shall provide the initial working capital fund requirement no later than ninety (90) 
calendar days before the Commercial Operation Date. Should the required working capital 
fund requirement increase upon annual review, each Party shall have sixty (60) calendar 
days after AEPCO provides notice to increase or decrease the account balance to the 
required level. Upon termination of this Agreement, AEPCO will refund the any unused 
amounts in the working capital fund to Participant. 
9.3 
Letter of Credit.  
a) Notwithstanding anything contained in this Section 9.3 to the contrary, as an alternative to 
cash, Participant may fund its required contribution to the working capital fund in the form of 
a letter of credit in an amount up to the working capital requirement calculated in Section 9.2, 
that AEPCO may utilize to make payments to Service Provider if Participant fails to make 
timely payment to AEPCO, up to the amount Participant fails to pay, and to pay for losses as 
a result of an Event of Default, as provided in Section 6.5. Any letter of credit provided by 
Participant hereunder shall be an irrevocable, nontransferable standby letter of credit issued by 
(1) the National Rural Utilities Cooperative Finance Corporation, or (2) a U.S. commercial 
bank or a U.S. branch of a foreign bank with such bank having (A) a Credit Rating of at least 
“A-“ from S&P and “A3” from Moody’s, and (B) total assets (determined in accordance with 
GAAP) of at least $10,000,000,000 (Ten Billion Dollars), substantially in the form of Exhibit 
E and reasonably acceptable to AEPCO. All letter of credit costs shall be borne by Participant.  
b) Participant funding its required contribution to the working capital fund in the form of a letter 
of credit shall: (A) take all actions necessary to ensure that the issuing bank permits automatic 
renewal as provided in the relevant letter of credit, and (B) if the issuing bank has indicated its 
intent not to renew such letter of credit, provide a substitute letter of credit acceptable to 
AEPCO that complies with the requirements of this Section 9.3(ii) (or cash) at least twenty 
(20) Business Days prior to the expiration of the outstanding letter of credit  
c) Upon the occurrence of a letter of credit default with respect to a letter of credit provided by 
Participant under this Section 9.3, Participant shall provide a substitute letter of credit 
acceptable to AEPCO that complies with the requirements of this Section 9.3 (or cash) within 
five (5) Business Days after such occurrence. 
d) Failure of Participant to provide a substitute letter of credit (or cash) as required under this 
Section 9.3 shall be considered an Event of Default for purposes of Section 6.1.

26 
9.4 
Credit Support of Service Provider Agreement. Participant shall not, except as required 
by Section 9.2 and 9.3, be responsible for funding any holding account, letter of credit or 
other expense associated with AEPCO’s obligation to the Service Provider to maintain 
AEPCO’s creditworthiness requirements of the Service Provider Agreement. 
ARTICLE X. MISCELLANEOUS 
10.1 
Assignment. Except as otherwise provided herein, neither Party may assign its rights and 
obligations under this Agreement without prior written consent of the non-assigning Party, 
which consent shall not be unreasonably withheld, conditioned, or delayed, provided that 
a Party may assign this Agreement to an Affiliate or to a successor with prior notice, but 
without consent of the other Party. 
10.2 
Permitted Encumbrances.  
a) AEPCO may from time to time, with notice to but without consent of the Participant, mortgage, 
pledge, encumber, or collaterally assign AEPCO’s interest in this Agreement (an “AEPCO 
Permitted Mortgage”) in favor of a lender or its designee (“AEPCO Permitted 
Mortgagee”). Upon request by AEPCO, from time to time, Participant will provide written 
confirmation of this Agreement, including reasonably requested factual confirmations. Subject 
to the terms of this Agreement, Participant will permit the AEPCO Permitted Mortgagee to 
cure or correct any omission or violation or this Agreement by AEPCO or on behalf of AEPCO. 
Any foreclosure of an AEPCO Permitted Mortgage or transfer in lieu thereof shall be deemed 
a permitted assignment. 
b) Participant may mortgage, pledge, encumber, or collaterally assign Participant’s interest in this 
Agreement in favor of a lender or its designee.  
10.3 
Taxes. Participant shall be responsible for its Subscription Share of any and all Taxes 
assessed on the generation, sale, delivery or consumption of Solar Output produced by the 
Generation Facility or the interconnection of the Generation Facility to the electric 
distribution system, or on the generation, sale, delivery or consumption of the Storage 
Product or the interconnection of the BESS to the electric distribution system. 
10.4 
Governing Law and Venue. This Agreement shall be governed by, and construed in 
accordance with, the laws of the State of Arizona, without giving effect to its conflicts of 
law principles. The proper venue for any proceeding at law or in equity shall be Maricopa 
County, Arizona, and the Parties waive any right to object to the venue. 
10.5 
Waiver of Trial by Jury. Any suit, action or proceeding, whether claim, counterclaim or 
cross claim, brought or instituted by any Party against another Party hereto on or with 
respect to this Agreement or any event, transaction or occurrence arising out of or in any 
way connected with this Agreement shall be tried only by a court and not by a jury. EACH 
PARTY HEREBY EXPRESSLY WAIVES ANY RIGHT TO A TRIAL BY JURY IN 
ANY SUCH SUIT, ACTION OR PROCEEDING. THIS WAIVER OF RIGHT TO 
TRIAL BY JURY IS GIVEN KNOWINGLY AND VOLUNTARILY BY EACH 
PARTY AND IS INTENDED TO ENCOMPASS INDIVIDUALLY EACH 
INSTANCE AND EACH ISSUE AS TO WHICH THE RIGHT TO A TRIAL BY

27 
JURY WOULD OTHERWISE ACCRUE. A PARTY MAY FILE A COPY OF THIS 
PARAGRAPH IN ANY PROCEEDING AS CONCLUSIVE EVIDENCE OF A 
PARTY’S WAIVER OF RIGHT TO TRIAL BY JURY. 
10.6 
Dispute Resolution. Any disagreement between Parties related to the Generation Facility 
or this Agreement shall be deemed a “Dispute”. Any Party with a Dispute shall notify the 
O&C Committee and the other Party in writing of the issue that the alleging Party believes 
is taking place and that a Dispute exists. Upon receipt of a notice of a Dispute, the chair of 
the O&C Committee shall refer the Dispute to the Parties involved, who shall in good faith 
seek to resolve the Dispute arising hereunder through negotiation. For disputes that cannot 
be resolved by the Parties involved with in sixty (60) days, such Parties may pursue any 
remedy available at law or in equity. This provision does not apply to circumstances 
necessitating emergency injunctive relief, in which event the timeframes in this Section 
10.6 will not apply. 
10.7 
Successors and Assigns. Subject to the provisions of Section 10.1 above, this Agreement 
and the requirements and conditions herein contained shall inure to the benefit of and be 
binding upon successors, legal representatives and permitted assigns of the Parties. 
10.8 
Severability. In case any one or more of the provisions contained herein shall for any 
reason be held to be wholly or partially illegal, invalid, or unenforceable in any respect, 
such illegality, invalidity or unenforceability shall not affect any other provision of this 
Agreement, but this Agreement shall be construed as if such illegal, invalid, or 
unenforceable provisions had not been contained herein. Furthermore, in lieu of any illegal, 
invalid or unenforceable provision in the Agreement, there shall be automatically added to 
this Agreement a provision as similar to such illegal, invalid, or unenforceable provision 
as may be possible and be legal, valid, and enforceable.  
10.9 
Compliance with Laws. Both Parties agree to comply and exercise reasonable diligence 
to require all others engaged by it to comply with all applicable laws, permits, decrees, 
orders, judgments, rules and regulations. 
10.10 Entire Agreement. This Agreement constitutes the entire agreement between the Parties 
hereto with respect to the matters addressed herein.  
10.11 Not to be Construed Against Drafter. Each Party has had an adequate opportunity to 
review each and every provision of this Agreement and to submit the same to legal counsel 
for review and advice. Based on the foregoing, the rule of construction, if any, that a 
contract be construed against the drafter shall not apply to interpretation or construction of 
this Agreement. 
10.12 No Personal Liability. Except as otherwise expressly provided in this Agreement, no 
Representative of either Party, or Representative of an Affiliate or assignee of either Party, 
shall have any liability to the other Party in connection with this Agreement. 
10.13 Time of Essence. Time is of the essence of this Agreement and each and all of its 
provisions.

28 
10.14 Counterparts. This Agreement may be executed in two or more counterparts, each of 
which shall be deemed an original, but all of which together shall constitute one and the 
same instrument. 
10.15 Survival. All provisions of this Agreement which by their express terms survive 
termination of this Agreement or expiration of the Term or which by the operation of their 
terms are intended to be performed, in whole or in part, after termination of this Agreement 
or expiration of the Term, and all obligations of indemnification contained in this 
Agreement shall survive any termination of this Agreement or the expiration of the Term, 
as applicable. 
10.16 Confidentiality. Neither Party shall disclose the terms or conditions of this  Agreement or 
the Service Provider Agreement to a third party (other than the Party’s employees, lenders, 
counsel, accountants or advisors who have a need to know such information and have 
agreed to keep such terms confidential) except in order to comply with any: (1) applicable 
law; (2) regulation; (3) rule adopted by an exchange, reliability coordinator, resource 
adequacy administrator, balancing area authority, control area, independent system 
operator, or any similar entity; or (4) in connection with any court or regulatory proceeding; 
provided, however, each Party shall, to the extent practicable, use commercially reasonable 
efforts to prevent or limit the disclosure. In the event any Party receives a request to 
disclose the terms or conditions of this Agreement, or a copy of the Agreement itself, to a 
third party, the Party in receipt of a request for disclosure shall notify the other Party as 
promptly as possible, but in no event more than two (2) business days after receipt of such 
request, or, if earlier, before the deadline for disclosure. The Parties shall be entitled to all 
remedies available at law or in equity to enforce, or seek relief in connection with, this 
confidentiality obligation, and the Parties shall cooperate with efforts of any other party to 
limit or prevent disclosure of this Agreement or its terms and conditions. 
The Parties acknowledge and agree that: (a) Participant is a political subdivision of the 
State of Arizona and, as such, may be subject to Arizona law related to open meetings, 
public records (including A.R.S. § 39-101, et seq.), and record retention; (b) Participant  is 
governed by a board of directors and is required by law to conduct meetings of the board 
that are open to the public; and (c) most documents and electronic information provided to 
Participant will be considered public records and must be made available to members of 
the public upon request. As such, provided the receiving Party complies with any 
applicable procedural requirements set forth in this section, a receiving Party may disclose 
information identified as confidential by this Agreement to the extent necessary to comply 
with such laws. 
Notwithstanding the foregoing, in the event that any demand or request for disclosure of 
the terms or conditions of this Agreement is made to Participant, Participant shall as soon 
as practicable notify AEPCO of the existence of such request or demand and shall (A) 
provide AEPCO with a reasonable opportunity to seek an appropriate protective order or 
other remedy, which both Parties will cooperate in seeking to obtain, and (B) Participant 
and AEPCO shall use reasonable efforts to seek redaction of any commercially sensitive 
information in this Agreement. In the event that such appropriate protective order or other

29 
remedy is not obtained, Participant shall disclose that portion of the Agreement that is 
legally required to be disclosed. 
10.17 Third Party Beneficiary. Unless expressly provided in this Agreement, nothing herein is 
intended or shall be construed to confer any benefit upon a third party. 
10.18 Waiver and Amendment. Any waiver or amendment of this Agreement must be in writing 
and executed by both Parties. A waiver or failure to enforce any terms of this Agreement 
shall not affect or waive a Party’s right to enforce any other term of this Agreement. 
10.19 No Joint Venture. Nothing contained herein shall be construed as creating any joint 
venture, partnership, or agency, or as making any Party the fiduciary of any other. 
10.20 Exhibits. The exhibits to this Agreement, as they may be amended or revised from time to 
time by mutual agreement of the Parties, are attached and incorporated by this reference. 
10.21 Enforcement of Rights on Behalf of Participant. AEPCO shall make commercially 
reasonable efforts to enforce all rights within the Service Provider Agreement that are inure 
to the benefit of Participant including, but not limited to the reliable delivery of solar 
energy, battery storage capacity and Environmental Attributes from the Project, and 
damages owed to Participant for Service Provider’s failure to provide any of those benefits. 
10.22 Notice from Service Provider. Except for instances of confidential information, any 
material notice that is provided from Service Provider to AEPCO shall also be provided 
from AEPCO to Participant. 
10.23 Registration of Environmental Attributes. Per Section 4.2(c) of the Service Provider 
Agreement, AEPCO and Service Provider shall register the Project in WREGIS, or its 
successor, by the Commercial Operation Date. After successful transfer of Renewable 
Energy Credits from Service Provider to AEPCO, AEPCO shall transfer all Renewable 
Energy Credits produced by the Project in proportion to the Solar Output to Participant’s 
WREGIS account on no less than an annual basis. Participant shall not be responsible for 
any expenses involved in the creation or transfer of RECs other than Participant’s own cost 
to register itself with WREGIS. 
10.24 Arizona Provisions. Notice is hereby provided of Arizona Revised Statutes Sections 38-
511, 23-214, 35-393,01, 35-394, 41-4401, and 42-17106 to the extent such provisions are 
applicable to contracts of the nature of this Agreement. 
10.25 Participant Payment Limitation. Notwithstanding any other provision of this 
Agreement, no part of the amounts payable by Participant pursuant to this Agreement shall 
be payable out of any ad valorem taxes imposed by Participant or from bonds or other 
obligations, the payment of which Participant’s general taxing authority is pledged, unless 
(i) the same shall have been duly budgeted by Participant according to law, (ii) such 
payment or payments shall be within the budget limitations of the statutes of the State of 
Arizona, and (iii) any such bonded indebtedness or other obligation is within the debt 
limitations of the Constitution of the State of Arizona. Participant’s payment of any 
amounts due under this Agreement, including amounts due after default or termination

30 
hereof, shall in no circumstances constitute a general obligation of, or a pledge of the full 
faith and credit of, Participant, the State of Arizona, or any of its political subdivisions, or 
require the levy of, or be payable from the proceeds of, any ad valorem taxes. In no way 
does this Agreement create any constraint, obligation or limitation of Participant to transfer 
certain electric utility system revenues from the electric utility system to the general fund 
of the Participant. This Agreement is an agreement by Participant to purchase the Product, 
and Participant’s payments made hereunder shall be designated by Participant as operating 
expenses of Participant in a manner similar to payments made by Participant pursuant to 
other agreements of Participant to purchase electric utility system inputs and supplies. This 
Agreement is not a debt, financial obligation, parity obligation, or subordinate obligation 
for any purpose of Participant’s resolutions, ordinances, agreements or instruments 
pertaining to Participant’s currently outstanding and future bonds and obligations paid in 
whole or in part from revenues of the electric utility system. No lien on the revenues of 
Participant’s electric system is created by this Agreement. Any ability of Participant to pay 
such amounts demanded by AEPCO is subject to applicable law.   
ARTICLE XI. NOTICES 
Whenever AEPCO or Participant shall make any demand or serve any notice, consent, approval, 
authorization or other communication which is under the terms of this Agreement upon the other 
Party, the same shall be in writing and shall be deemed given and received upon receipt confirmed 
in writing (which may be by recipient or a third party delivery service) or, if earlier, three (3) 
business days following electronic mail transmission, receipt confirmed in writing or via “read 
receipt” or deposit in a regularly maintained receptacle for the United States mail, registered or 
certified mail, return receipt requested, postage prepaid, addressed to the intended recipient as 
follows: 
If to AEPCO: 
Arizona Electric Power Cooperative, Inc. 
Attention:  General Counsel 
PO Box 670, 1000 S. Highway 80 
Benson, AZ  85602 
Email: legal@azgt.coop 
If to Participant: 
Energy Resources Director 
_________________________________ 
_________________________________ 
 
Either Party may, at any time and from time to time, change the address to which notices are to be 
sent to such Party by delivering at least ten (10) days’ prior written notice of such change to the 
other Party. Each Party, as a courtesy to the other Party, shall provide any notice described herein 
by electronic mail to the electronic mailboxes identified above as well.  
[SIGNATURE BLOCKS ON NEXT PAGE]

31 
IN WITNESS WHEREOF, the Parties have executed this Pinal Power Purchase and Energy 
Storage Agreement. 
 
ARIZONA ELECTRIC POWER COOPERATIVE, INC. 
By:  ______________________________ 
Name: Patrick F. Ledger 
Title: Executive VP and CEO 
 
CITY OF MESA, ARIZONA 
By:  ______________________________ 
Name: ____________________________ 
Title: _____________________________

32 
EXHIBIT A - DESCRIPTION OF PROJECT  
1. Project: 
Pinal Solar and Storage 
 
2. Location: Pinal County, Arizona 
 
3. Owner: 
Eloy Valley Energy Center III, LLC 
 
4. Operator: NextEra Energy Resources, LLC or its designee 
 
5. Scheduling Coordinator: Arizona Electric Power Cooperative, Inc. 
 
6. Generating Facility: 
 
a. Type of facility and conversion equipment: Solar Photovoltaic 
b. Total nameplate capacity (MWAC): 400 
c. Total co-located capacity at Delivery Point: 462.5 
d. Additional technology-specific information: Single axis trackers  
 
7. Battery Energy Storage System: 
 
a. Type of facility and conversion equipment: Energy Storage 
b. Total nameplate capacity (MWAC): 400 
c. Total capacity at Point of Delivery: 462.5 
d. Additional technology-specific information: AC-connected battery energy storage 
system 
 
8. Transmission Provider: Western Area Power Administration 
9. Other: Any wheeling costs after the Delivery Point to move the power to the load will be the 
responsibility of the individual Participants.

33 
EXHIBIT B – DELIVERY POINT 
 
Delivery Point: Western Administration Power Authority ED5 Substation  
Any other delivery and/or receipt point, or other type of arrangement, as mutually agreed to in 
writing by AEPCO, the Participant, and third-party transmission provider(s), if any.

34 
EXHIBIT C – RATES FOR SERVICE 
 
1 Solar Output Rate: 
2 Owner Solar 
Output Price/MWh 
3 A&G and 
Margin /MWh 
 4 S&T Fee 
/MWh 
Implementation 
Fee /MWh 
Total /MWh 
$27.48 
$1.65 
$0.47 
$0.03 
$29.63 
 
1 Storage Product Rate: 
2 Owner BESS 
Rate/KW-month 
3A&G and Margin 
/KW-month 
 S&T Fee/KW-
month 
Implementation 
Fee/ KW-month 
5 Total 
/KW-month 
$10.98 
$0.66 
N/A 
$0.01 
$11.65 
 
1 Rate is based on not qualifying for energy community and domestic content classifications under 
the Inflation Reduction Act of 2022 (IRA) and/or Empowering Rural America (New ERA) 
program benefits. For avoidance of doubt, the Parties agree to modify the rates if any of the 
anticipated program benefits are received from IRA or New ERA.  
 
2 Rate is subject to change under certain contractual conditions set forth in Service Provider 
Agreement, and for avoidance of doubt, such changes will be passed to Participants. 
 
3A&G refers to administrative and general costs. Rate may be subject to change after a future 
ACC-approved rate case. 
 
4 S&T Fee refers to scheduling and trading services and is subject to an annual budgetary rate 
process. S&T is applicable if not recovered under a separate energy and management services 
agreement or scheduling and trading agreement with AEPCO. 
 
5 Total/KW-month rate does not include Charging Energy. Participant is responsible for 
transmission to import Charging Energy from sources other than the Generating Facility. 
Total/KW-month rate does not include Discharge Energy Delivery Charge. Participant is 
responsible for such charge as set forth in Exhibit D.  
 
Above rates exclude cost of transmission service.

35 
 
EXHIBIT D – DISCHARGE ENERGY DELIVERY CHARGE  
1. This Exhibit D is effective under and as a part of Pinal Power Purchase and Energy Storage 
Agreement, hereinafter called Agreement, and shall remain in effect until superseded by 
another Exhibit D; provided this Exhibit D or any superseding Exhibit D shall terminate 
concurrently with the termination of the Agreement.  
2. The Discharge Energy Delivery Charge will include the following charges as applicable to 
Participant: 
a) Scheduling and Trading. If not charged under a separate agreement with AEPCO, a 
monthly cost to reflect the scheduling and trading services calculated on the total MWh 
of Discharge Energy multiplied by the AEPCO scheduling and trading rate, currently 
$0.47 per MWh, subject to change year to year.

36 
EXHIBIT E – FORM OF LETTER OF CREDIT 
[Bank Letterhead] 
 
Arizona Electric Power Cooperative, Inc. 
P.O. Box 670 
1000 S. Highway 80 
Benson, Arizona 85602 
 
Irrevocable Letter of Credit No. [ ___________ ] 
Issuance Date: [      ] 
Amount: $[____]  
Expiration Date: [    ] 
 
We hereby issue in your favor this irrevocable Letter of Credit No. ________ (this “Letter of 
Credit”) in the aggregate stated amount of [$_____] for the account of [Name of Participant] (the 
“Company”) in relation to that certain Pinal Power Purchase and Energy Storage Agreement, dated 
as of ____________ to which Company and Arizona Electric Power Cooperative, Inc (“AEPCO”) 
are party (as may have been amended, modified or supplemented from time to time to time, the 
“Agreement”). 
 
This Letter of Credit is effective immediately and expires at our close of business on the expiration 
date shown above. Notwithstanding the foregoing, this Letter of Credit will automatically 
terminate upon its surrender to us for cancellation. 
 
Funds under this Letter of Credit are available against your sight draft and demand made on us 
from time to time, such demand to be made by your submission of your statement, purportedly 
signed by your authorized officer as follows, with appropriate insertions: “___________ has failed 
to [describe default] its obligations under the Pinal Power Purchase and Energy Storage 
Agreement, dated as of _______________, to which Company is a party and under which the 
undersigned is AEPCO, and as a result the undersigned is claiming the sum of $_______ under 
[Bank Name] letter of credit number ____.” 
 
Any such presentation shall be made at our [Bank Address]. If we receive your demand certificate 
on or prior to the expiration or termination of this Letter of Credit, then we will honor your demand 
in accordance with your payment instructions, provided, that such documents are presented in 
strict compliance with the terms and conditions of this Letter of Credit. 
 
To the extent not contrary to the express provisions hereof, this Letter of Credit shall be governed 
by the Uniform Customs and Practice for Documentary Credit (2007 Revision), International 
Chamber of Commerce Publication No. 600 (the “UCP”). As to matters not addressed by the UCP, 
this Letter of Credit shall be governed by and construed in accordance with the laws of the State 
of New York, without reference to the conflict of law provisions thereof that would direct the 
application of the laws of another jurisdiction. 
 
Communications with respect to this Letter of Credit shall be in writing and shall be addressed to 
us at [Bank Address], specifically referring to this Letter of Credit Number _____________.

37 
 
 
This Letter of Credit sets forth in full our undertaking. Except as stated herein, payment of demands 
made under this Letter of Credit is not subject to any condition or qualification. Our obligations 
hereunder are primary obligations that shall not be affected by the performance or nonperformance 
by any party to the Agreement of any obligations under the Agreement or under any agreement 
between such a party and any other person. Our obligations and liabilities hereunder shall not in 
any way be affected, modified, amended, reduced, impaired, amplified or limited by any 
amendment, renewal, extension, modification, compromise, release, discharge or reference of, 
under, to or in connection with the Agreement or any other document or agreement (except only 
the certificate referred to herein). Reference herein to the Agreement shall not be deemed to 
incorporate the same herein by reference. 
 
Very truly yours, [Bank Name] 
______________________________________ 
Authorized Signatory

38 
EXHIBIT F – PARTICIPANT’S AGENT 
1. This Exhibit is only applicable if the Participant designates, in writing, a Participant’s Agent to 
act on the Participant’s behalf within a defined scope of authority. 
2. Participant represents and warrants to AEPCO that: 
a) Pursuant to the terms and conditions of that certain Resource Management Services agreement 
(Contract No. 97-DSR-10820) between Participant and Western Area Power Administration 
("WAPA") (the "RMS Agreement"), Participant has designated WAPA ("Agent" or 
“Participant’s Agent”) as its Agent to act for and bind the Participant in connection with the 
scheduling of Transactions entered into by Participant with AEPCO under this Agreement. 
Additionally, Agent shall have the authority to perform any and all duties incident to or 
necessary for the scheduling of electricity hereunder. 
b) The RMS Agreement has been duly authorized and executed, is in full force and effect, and 
constitutes the legal, valid and binding obligation of Participant. 
c) Participant will be fully bound to perform the obligations incurred, on its behalf by the Agent, 
under this Agreement. 
d) Participant shall indemnify AEPCO, its affiliates and its respective officers, directors, 
employees and agents and hold them harmless from and against all losses, costs, liabilities, 
damages and expenses (including, without limitation, costs of suit and reasonable attorney's 
fees) which arise out of this Agreement, and which may be incurred by AEPCO as a result of 
Agent's acting as Participant 's Agent as provided herein. 
e) Participant may terminate the original Agent's authority and designate a new Agent from time 
to time by giving written notice of same to AEPCO at least thirty (30) days prior to the effective 
date of such new designation, and in that event the original Agent's authority to act as Agent 
for Participant shall cease with respect to documents executed after the effective date set forth 
in such notice and the newly designated agent shall be substituted therefor, provided, however, 
that the designation of a new Agent shall not impair or affect scheduling instructions  by the 
original Agent prior to the effective date of the designation of the new Agent. Participant agrees 
that AEPCO may rely upon documents, including online scheduling entries in OASIS or other 
such systems executed by a representative of the Agent, without AEPCO inquiring as to the 
authority of any such representative.

39 
EXHIBIT G – SUBSCRIPTION SHARES 
 
 
AEPCO Class A Member Participant’s in the Project to include but limited to GCEC, SSVEC, 
Trico, and MEC will execute amendments to their wholesale power agreements to reflect that their 
collective participation in the Project shall require that each of them will be obligated to increase 
their respective purchases of the Product sold to Participant by an amount necessary to ensure that, 
in the event of a Class A Member Participant default, the entire amount of Class A Member 
Participant’s Subscription Share remains committed by the remaining Class A Member 
Participants for the Term of this Agreement.