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Convert the alternator's ac (alternating current) output to dc (direct current) and use it to charge up a battery, as is done in cars, trucks and many other vehicles.

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Another way to store the power from an alternator is to convert it to potential energy. This is done by using the alternator's power to turn a motor that drives a pump to move water uphill from a river valley into a big reservoir.

The water then holds the power as potential energy. When the power is needed the potential energy can be converted back to electrical power by allowing the stored water to run back downhill, away from the reservoir, and then, before it returns to the river, use it to drive a turbine. The turbine turns an alternator to generate the electrical power.

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15y ago

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