Super Efficient Power Plants

"The plant takes the leftover energy and uses it over and over again. "That's what gets us the efficiency”—almost 90 percent, says Merrihue. The hot exhaust from two gas-fired turbines fuels a steam turbine, which produces additional electricity. The leftover steam travels to a hot water heat exchanger and then to a chiller, where the last bit of energy is used to cool a 2400-gallon tank of water down to 45 degrees."

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