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A microgenerator could power portable devices for troops.
Levant Power saves fuel by turning road shocks and vibrations into electricity.
Free-piston engines could be used to generate electricity as efficiently as, and less expensively than, fuel cells.
Researchers use a running rodent to test their device.
Ener-G-Rotors’ system harvests energy at lower temperatures.
A more efficient generator could convert more of the wind’s energy into electricity.
A new human-powered generator tries to capture walking energy.
A new technology could generate electricity from waves.