Liquid batteries, giant lasers, and vast new reserves of natural gas highlight the fundamental energy advances of the past 12 months.

By Kevin Bullis

MONDAY, DECEMBER 28, 2009

With many renewable energy companies facing hard financial times (“Weeding Out Solar Companies“), a lot of the big energy news this year was coming out of Washington, DC, with massive federal stimulus funding for batteries and renewable energy and programs such as Energy Frontier Research Centers and Advanced Research Projects Agency-Energy (“A Year of Stimulus for High Tech“).

Credit: Roy Ritchie

But there was still plenty of action outside the beltway, both in the United States and More >