St Francis University photoWarren Buffett, who knows a few things about investing, has arguably become the largest investor in the American wind power market.

In his annual letter to Berkshire Hathaway shareholders, Warren Buffett noted that one of his portfolio companies, MidAmerican Energy, leads all regulated utilities when it comes to wind energy.

By the end of 2011, MidAmerican will generate over 2900 megawatts of wind generation, with investments of $5.4 billion in wind power.

The Des Moines based utility has electricity customers in Iowa, South Dakota, and Illinois.

(READ more in the Triple Pundit)

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