June 10, 2011

Capital Power announces inclusion in the S&P/TSX Composite Index

EDMONTON, Alberta – June 10, 2011 – Capital Power Corporation (TSX: CPX) (Capital Power) announced today that Standard & Poor’s (S&P) has added Capital Power to its S&P/TSX Composite Index (Composite Index), effective market-open on June 20, 2011. The Composite Index is the headline index for Canada, which represents the inclusion of the largest companies on the TSX and the principal benchmark measure for the Canadian equity markets.

“Capital Power is pleased New casino gamesto be listed on the S&P/TSX Composite Index,” said Capital Power President & CEO Brian Vaasjo. “Since our initial public offering, Capital Power has been successful in growing the company for shareholders, resulting in both increased market capitalization and enhanced trading liquidity. We are gratified that a broader universe of institutional investors will now have the opportunity to participate in Capital Power’s future as a result of our inclusion in this important index.”

About the S&P/TSX Composite Index
The S&P/TSX Composite is the headline index for the Canadian equity market. It is the broadest in the S&P/TSX family and is the basis for multiple sub-indices including New online casinosbut not limited to equity indices, Income Trust Indices, Capped Indices, GICS Indices and market cap based indices. The Toronto Stock Exchange (TSX) serves as the distributor of both real-time and historical data for this index.

New online casinosCapital Power is a growth-oriented North American independent power producer, building on more than a century of innovation and reliable performance. The Company’s vision is to be recognized as one of North America’s most respected, reliable and competitive power generators. Capital Power is headquartered in Edmonton, Alberta. Following the close of its recently announced New England acquisitions, Capital Power will have interests in 34 facilities in Canada and the U.S. totaling nearly 4,900 megawatts of generation capacity. Capital Power and its subsidiaries develop, acquire and optimize power generation from a wide range of energy sources. The company’s web site can be accessed at www.capitalpower.com.