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The ARES (Advanced Rail Energy Storage) system uses a rock and concrete filled railcar to store renewable energy, later feeding it back in to the grid when demands requires.
At times that energy generation exceeds demand, the electric motors in the railcar drag it up a 2,000 foot hill. When the energy is required again, the system rolls down the hill again, using regenerative braking to recover the energy and turn it back to electricity.
The $55 million system already has a pilot project underway in California, with a larger project planned for Nevada.
At times that energy generation exceeds demand, the electric motors in the railcar drag it up a 2,000 foot hill. When the energy is required again, the system rolls down the hill again, using regenerative braking to recover the energy and turn it back to electricity.
The $55 million system already has a pilot project underway in California, with a larger project planned for Nevada.