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Finally, a 1 kW electric radioisotope power supply running on Plutonium 238 (Pu-238) would kick in to power an ion thruster engine.
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The Tesla Roadster, which indeed uses Li-ion batteries, stores 56 kWh of electric energy and delivers up to 215 kW of electric power (a NiMH battery pack with the same electric energy would weigh over twice as much).
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Similarly, in Glastonbury, CT, a Whole Foods grocery store kept the coolers running during a power outage with its 200-kW fuel cell made by UTC Power, which dramatically reduced inventory losses resulting from food spoilage.
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Fully working models will be larger and, Makani hopes, be able to generate 600 kW. It hopes the cost of the power generated will initially be competitive with off-shore wind farms.
BBC: Google acquires kite-power generator
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All told, electricity demand in these regions is likely to exceed supply by an estimated 19 million kilowatts (kW) in the summer, according to estimates by regional power distributor East China Grid Company.
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Simply put, all of the power that goes to the wheels of the Volt goes through its 111 kW (149 hp equivalent) electric motor.
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The firm has just successfully completed tests on a 30 kW prototype to see if its control system lets it launch, hover, generate power and land without human intervention.
BBC: Google acquires kite-power generator