CNN Money

NEW YORK (CNNMoney) -- When it comes to solar power, more and more Americans are seeing the light.

Installations of solar energy systems in the U.S. more than doubled in 2011, according to a new report, fueled in part by declining solar panel costs.

The U.S. added a record 1,855 megawatts of photovoltaic capacity in 2011, a 109% increase versus the year prior, said GTM Research and the the Solar Energy Industries Association, a national trade group.