PG&E to compress air to store wind power

Despite all the talk about needed breakthroughs in batteries, Pacific Gas & Electric is pursuing a less high-tech approach to store wind power: underground compressed air.

The utilty on Wednesday said that it is seeking $25 million in smart-grid stimulus funds to build an underground compresssed air storage facility that would be able to deliver as much electricity as a medium-size power plant for about 10 hours.

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