Energy Storage: Existing Deployments & Applications California PUC Workshop on Procurement Policy Options January 2013 - San Francisco.

Energy Storage: Existing Deployments & ApplicationsCalifornia PUC Workshop on Procurement Policy Options

January 2013 - San Francisco

2

AES operates power facilities in 27 countries.

Our mission is to improve lives by providing safe, reliable and sustainable energy solutions in every market we serve.

AES OperationsAES HeadquartersKey

27,000 8,452 MW

33,814 MW$17.2 Billion

Global workforceCapacity at AES utility businessesCapacity at AES generation businesses2011 Revenue

Member:

3

98 MW Laurel Mountain Wind Projectwith 32 MW BESS

Serving PJM Market

Chile

New York

Chile

It’s here today: Commercial, battery-based energy storage is performing today in power markets.

AES Laurel Mountain 32MW energy storage operating commercially in PJM since 2011.

• Economic: Least cost resource clears daily in PJM regulation market

• Operating range of +32MW to -32MW• 32MW battery replaces over 80MW of

regulation from traditional resources• Precise response to 4 second AGC

© 2012 The AES Corporation All Rights Reserved

Energy storage is least cost for flexibility – high availability, more MW around the clock.

Energy storage operating in Chile since 2009. Fast response improves customer reliability.

Source: CDEC-SING, AES

System Event on 4/9/12

Angamos 20MW BESS

© 2012 The AES Corporation All Rights Reserved

Modular architecture drives high availability, performance similar to top thermal plants.

Source: Navigant, AES,

CCGT >500MW

CCGT 50-225MW

Diesel 3-5MW

Gas/Oil >

350MW

Gas/Oil 1

50-350MW

Gas/Oil 0

-100MW

GT 175-200MW

GT 90-120MW

GT 20-30MW

PC Scrubbed 100-6...

PC Unscr 350-500MW

50%

55%

60%

65%

70%

75%

80%

85%

90%

95%

100%

EAF Mean EAF TopQ

97% EAF

EAF = Equivalent Availability Factor (Average MWs available/MWs nameplate)

© 2012 The AES Corporation All Rights Reserved