A123 Systems: Inside Form Energy, the Star-Studded Startup Tackling the Hardest Problem in Energy Storage

Industry veterans from Tesla, Aquion and A123 are trying to create cost-effective energy storage to last for weeks and months. A crew of battle-tested cleantech veterans raised serious cash to solve the thorniest problem in clean energy. As wind and solar power supply more and more of the grid's electricity, seasonal swings in production become [...]