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17. Reliant Energy
Reliant Energy
Fortune 500 rank: 237
2007 revenue: $11.21 billion
2007 total shareholder return: 84.7%

With natural gas prices soaring, Reliant, which supplies energy to more than 1.8 million people in Texas, including nearly half of Houston, where it is based, has benefited by having a variety of power sources, including coal and wind.

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Last updated April 24 2008: 10:54 AM ET
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