Tesla CEO: I’d Bet On Capacitors Over Batteries

At the Cleantech Forum in San Francisco on Wednesday, Tesla’s CEO Elon Musk says he bets that it could be capacitors — rather than batteries — that will deliver an important breakthrough for electric transportation, an interesting comment from a CEO whose products are based on lithium-ion batteries

10 Companies to Watch for out of ARPA-E

Early-stage, high-risk, and potentially game-changing — those are a few things all the companies that have been funded by the Department of Energy’s ARPA-E program have in common. I’m at the ARPA-E Summit this week and here are 10 companies to watch for.

Khosla-backed Recapping – An EEStor Competitor?

Here’s one reason why greentech venture capitalist Vinod Khosla might have been a bit skeptical of stealth energy storage company EEStor last year — looks like he’s invested in a company that could be a competitor called Recapping (that is if EEStor ever releases a product).