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Greg Abel
Company: MidAmerican Energy Holdings
2009 Revenues: $11.4 billion

Abel, who took over the CEO job from Sokol in 2008, is a hands-on executive who helped pull off numerous acquisitions for the Iowa utility. His company is making a big push into renewable energy.

NEXT: Ajit Jain

Last updated August 02 2010: 6:54 AM ET
Note: Figures for insurance companies are underwriting revenues.
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