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California looks to its roads for new source of renewable energy

California is putting $2 million into research to determine whether gridlock can be a beneficial source of electricity. The technology at the heart of the idea is piezoelectric crystals, which could turn mechanical energy from traffic into usable electricity that can be added to the power grid. The approach seeks to harness energy that is usually wasted, thus providing an additional source of renewable energy for the state’s residents.
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