Friday, June 12, 2009

Batteries are Big

I've written about batteries and energy storage a few times on this blog. Batteries are key to ensuring the future of renewable energy. Without reliable high-capacity batteries, wind and solar energy will always be adjuncts to electricity derived from fossil fuels.

It seems Warren Buffet believes in the importance of batteries, too. At his urging, MidAmerican Energy Holdings, a utility holding company that Berkshire Hathaway owns 80% of, recently invested in BYD. BYD is a Chinese company that makes batteries and electric cars.

Not just any batteries. Batteries that can store 2 MW. And if they test well, they could lead to systems that can store 100 to 200 MW.

That's utility scale, and a game-changer.

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