11 15 2017 M CTY AND NRG PHX GROWTH.PPTX

Maricopa County and District Cooling
November 29, 2017

NRG Energy Center Phoenix District Cooling System
NRG Energy Center Phoenix is wholly owned by NRG Yield, Inc.
© 2017 NRG Energy, Inc. All rights reserved. / Proprietary and Confidential Information 2

NRG Energy Center Phoenix District Cooling System
(Video)
https://player.vimeo.com/video/222844862
© 2017 NRG Energy, Inc. All rights reserved. / Proprietary and Confidential Information 3

NRG Energy Center Phoenix District Cooling System
(System Facts)
Ø Area served: 3 square miles in downtown Phoenix
Ø Buildings on system: 43
Ø Building space served: 14 million square feet
Ø Total System Capacity: 40,000 tons chilled water
§ Three hydraulically interconnected plants
§ 14 large chillers
§ Two thermal ice storage tanks
© 2017 NRG Energy, Inc. All rights reserved. / Proprietary and Confidential Information 4

Maricopa County and NRG
Ø Maricopa County was NRG’s first district cooling customer
Ø Long lasting relationship since 2001 starting with the County’s
Stadium District’s (Chase Field) and the Security Center
Ø Maricopa County is NRG’s largest customer in downtown Phoenix with
6 facilities and over 8000 tons of cooling demand
§ Security Center
§ 4th Avenue Jail
§ Courts Complex
§ Courts Tower
§ Sheriff’s Headquarters (911 Center)
§ 225 West Madison Building
Ø NRG’s district cooling system would not be possible without Maricopa
County’s inspiration, support and sustainability vision for growth in
downtown Phoenix
© 2017 NRG Energy, Inc. All rights reserved. / Proprietary and Confidential Information 5

2001 -2004 Customers
ASU AZCC
Bio
ASU ASU
Post Office Chronkite ASU Taylor BPB
Place
Downtown Phoenix Chilled ASU HSEB
ASU TGen
411 Law Retail
Water Distribution System Two HSEB
AZ Research
Sheraton
Central Hotel Center
Transit Park Digital One ABC 1
Bldg. AZ
East Center U of A Med School
Van Buren
Sec.
Monroe Golub GSA Ctr. Chase Herberger
Street Office Bldg. 44 Bank Parking Theatre Catholic Diocese ASU Downtown
Apts Monroe Tower Center
Monroe
One Monroe
Eleven 101 N. Hotel Convention
Parking AT&T 1st Hyatt Center Heritage
Orpheum Ave. Crowne West Convention Square
Lofts Plaza Building Center
Adams North Hall
City Orpheum Wells Ren I Hanny Bldg. Symphony
Dodge Theater
Courts Fargo Phelps Hall Arizona Science
Theater Bldg. City Hall Bank Ren II Dodge Center
Washington
Goode CityScape Block 23
New Phoenix Bldg. Historic CityScape Office RED B of A
Federal Courthouse Parking City Council City Retail Palomar FRY’s
Hall
Chambers Hotel/Apts Convention
Collier
Jefferson Center Center
County Luhrs South Hall
Future County West Superior Towers Barrister
County Admin Bldg. Court
Bldg. Hansji
Complex Hotel
Madison US
Sarver Airways
911 4th 225 W. Courts Proj. Center Plant #3
Bldg Avenue Madison Tower
Jail PSAC Chase Field
Jackson
Summit
@ Copper
Square
Plant #1
Installed Distribution Piping
Buchanan Buchanan
Avenue Avenue Avenue Avenue Avenue Avenue Avenue Central Street Street Street Street Street Street
7th 6th 5th 4th 3rd 2nd 1st 1st 2nd 3rd 4th 5th 7th 6

2001 -2004 Customers
ASU AZCC
2005 -2010 Customers
Bio
ASU ASU
Post Office Chronkite ASU Taylor BPB
Place
Downtown Phoenix Chilled ASU HSEB
ASU TGen
411 Law Retail
Water Distribution System Two HSEB
AZ Research
Sheraton
Central Hotel Center
Transit Park Digital One ABC 1
Bldg. AZ
East Center U of A Med School
Van Buren
Sec.
Monroe Golub GSA Ctr. Chase Herberger
Street Office Bldg. 44 Bank Parking Theatre Catholic Diocese ASU Downtown
Apts Monroe Tower Center
Monroe
One Monroe
Eleven 101 N. Hotel Convention
Parking AT&T 1st Hyatt Center Heritage
Orpheum Ave. Crowne West Convention Square
Lofts Plaza Building Center
Adams North Hall
City Orpheum Wells Ren I Hanny Bldg. Symphony
Dodge Theater
Courts Fargo Phelps Hall Plant #2 Arizona Science
Theater Bldg. City Hall Bank Ren II Dodge Center
Washington
Goode CityScape Block 23
New Phoenix Bldg. Historic CityScape Office RED B of A
Federal Courthouse Parking City Council City Retail Palomar FRY’s
Hall
Chambers Hotel/Apts Convention
Collier
Jefferson Center Center
County Luhrs South Hall
Future County West Superior Towers Barrister
County Admin Bldg. Court
Bldg. Hansji
Complex Hotel
Madison US
Sarver Airways
911 4th 225 W. Courts Proj. Center Plant #3
Bldg Avenue Madison Tower
Jail PSAC Chase Field
Jackson
Summit
@ Copper
Square
Plant #1
Installed Distribution Piping
Buchanan Buchanan
Avenue Avenue Avenue Avenue Avenue Avenue Avenue Central Street Street Street Street Street Street
7th 6th 5th 4th 3rd 2nd 1st 1st 2nd 3rd 4th 5th 7th 7

2001 -2004 Customers 2011 - 2016 Customers
ASU AZCC
2005 -2010 Customers
Bio
ASU ASU
Post Office Chronkite ASU Taylor BPB
Place
Downtown Phoenix Chilled ASU HSEB
ASU TGen
411 Law Retail
Water Distribution System Two HSEB
AZ Research
Sheraton
Central Hotel Center
Transit Park Digital One ABC 1
Bldg. AZ
East Center U of A Med School
Van Buren
Sec.
Monroe Golub GSA Ctr. Chase Herberger
Street Office Bldg. 44 Bank Parking Theatre Catholic Diocese ASU Downtown
Apts Monroe Tower Center
Monroe
One Monroe
Eleven 101 N. Hotel Convention
Parking AT&T 1st Hyatt Center Heritage
Orpheum Ave. Crowne West Convention Square
Lofts Plaza Building Center
Adams North Hall
City Orpheum Wells Ren I Hanny Bldg. Symphony
Comercia Theater
Courts Fargo Phelps Hall Plant #2 Arizona Science
Theater Bldg. City Hall Bank Ren II Dodge Center
Washington
Goode CityScape Block 23
New Phoenix Bldg. Historic CityScape Office RED B of A
Federal Courthouse Parking City Council City Retail Palomar FRY’s
Hall
Chambers Hotel/Apts Convention
Collier
Jefferson Center Center
County Luhrs South Hall
Future County Towers Barrister
County West Superior
Bldg. Admin Bldg. Court Marriot
Complex Hotel
Madison Talking
Sarver Stick
911 4th 225 W. Courts Proj. Arena Plant #3
Bldg Avenue Madison Tower
Jail PSAC Chase Field
Jackson
Summit
@ Copper
Square
Plant #1
2017 LOOP CLOSURE
Installed Distribution Piping
Buchanan Buchanan
Avenue Avenue Avenue Avenue Avenue Avenue Avenue Central Street Street Street Street Street Street
7th 6th 5th 4th 3rd 2nd 1st 1st 2nd 3rd 4th 5th 7th 8

District Cooling Has Many Advantages
Including the Reduction of
Capital Expense Power HazMat
Labor Maintenance Inefficiencies
© 2017 NRG Energy, Inc. All rights reserved. / Proprietary and Confidential Information
9

Contact Information
Jay Zaghloul, P.E., CEM
Director, Business Development
One East Washington Street, Suite 280
Phoenix, AZ 85004
602-281-4998
Email: Jay.Zaghloul@NRG.com
Jay.Zaghloul@nrg.com
© 2017 NRG Energy, Inc. All rights reserved. / Proprietary and Confidential Information 10