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Earth

Crystals turn roads into power stations

3 December 2008

AN ENVIRONMENTALLY friendly road that positively welcomes heavy traffic may sound odd, but by placing piezoelectric crystals under the asphalt that convert vibration into electricity, Israeli engineers hope to harvest energy from passing vehicles.

Developer Haim Abramovich at the Technion-Israel Institute of Technology in Haifa says the crystals can produce up to 400 kilowatts from a 1-kilometre stretch of four-lane highway. His spin-out company, Innowattech, also based in Haifa, will begin testing the system on a 100-metre stretch of road in northern Israel in January.

Installing the technology need not produce unnecessary greenhouse gases, says Abramovich: “We’re advocating that the…

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