Declining natural gas-fired combined-cycle heat rates

The average operating heat rate for combined-cycle generators has declined over the last five years. According to the EIA, natural gas combined-cycle power generators installed since 2015 have an average heat rate of 6,654 Btu/kWh. This average is nearly 25% lower than units installed before 2000, which have an average operating heat rate of 8,840…

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