Excess carbon captured by coal power plants could help solve the world's "solar power storage" problem. General Electric plans too CO2 as a giant battery for storing energy. CO2 is stored underground in cooled dry ice state while mirrors heat salt in a concentrated Mirror array to create solar power. When extra electricity is needed at peak times in the middle of the night, the heated salt can be tapped into to heat up the CO2, that'll be funneled in turbines to create energy rapidly. One of these could power 100,000 homes and drastically lower the prices of electricity from $250 megawatt per hour to $100 megawatt per hour.
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