A British supermarket chain is harvesting renewable energy from a most unexpected place: the parking lot.
Sainsbury’s, the self-proclaimed eco-conscious superstore that dots the UK, installed “kinetic road plates” in the car park of its latest store in Gloucester. They work a lot like speed bumps, and the store says vehicles passing over them can generate enough power to run the cash registers.
These aren’t run-of-the-mill speed bumps. The plates depress slightly under the weight of the cars, creating a rocking motion that turns a generator without the driver feeling the difference.
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