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POPSGeothermal Power opens its options At Chena, the power plant eliminates diesel generators, cutting expenses and emissions. “We’d been burning diesel fuel at the cost of about $1000 a day to keep the lights on here,” Holdmann says. The resort invested $2.2 million in the UTC plant, which should pay for itself in 5 years or less. Moreover, because the plant’s capacity is 400 kilowatts (kW)—in the form of 2 standard 200-kW modules—and the resort needs about 250 kW to operate, Chena will have surplus energy.