It’s official: Wind energy was number one new source of U.S. electricity generation in 2012

It’s official. In 2012 wind energy became the number one source of new U.S. electricity generation for the first time, representing 43 percent of new power last year and accounting for $25 billion in new investment, according to the Energy Department. 13 gigawatts were added last year, representing enough capacity to power 15 million homes [...]