While the news about climate change seems to get worse every day, the rapidly improving technology, declining costs and increasing accessibility of clean energy is the true bright spot in the march toward a zero-carbon future. The year had more clean energy milestones than we could fit on one page, but here are 13 of the key breakthroughs that happened in 2013.

Read More: http://ecowatch.com/2013/12/24/renewable-energy-breakthroughs-2013/