More than 1.5 million homes and businesses in the US have solar water heating. An estimated 2,500 home wind turbines are connected to the grid, with an unknown (probably considerably larger) number not connected. Around 6,800 residential wind systems were sold in the US in 2006. Solar and wind power probably make up the vast majority of home systems that harvest renewable energy.
As of the first half of 2009, renewable energy (largely hydroelectric) accounted for more than 10% of the US’s total domestic power production.
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