Several weeks before Christmas last year Harvard, Massachusetts suffered a severe ice storm that knocked out power for thousands of residents, followed by a snowstorm that delayed power restoration. It was during this crisis that John Sweeney hooked up his Toyota Prius to his house.
Sweeney, an electrical engineer, used an inverter to transform DC power from the Prius into AC and generating 17 kilowatt hours of energy enough to power for some of his household appliances such as a refrigerator, a freezer, wood stove fan, lights and television.
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