VIDEO: Electricity Out of Thin Air? PG&E Exploring New Type of Clean Energy

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PG&E’s Mike Medeiros, left, says compressed air could provide Californians with a form of clean, renewable energy that only two other utilities in the world use. (Photos by David Kligman.)

PG&E’s Mike Medeiros, left, says compressed air could provide Californians with a form of clean, renewable energy that only two other utilities in the world use. (Photos by David Kligman.)