Clean Coal Technologies, Coal, Emissions, Gas, Renewables

Duke Indiana unit plans to add gas, keep some coal-fired capacity into 2040s

Duke Energy’s generation subsidiary in one of the nation’s most coal-fired states reported that it plans to accelerate the retirements of seven units, but will keep some of those stations operating on the fossil fuel at least for nearly two decades or more.

Duke Energy Indiana gained cose to 90 percent of its generating power from coal last year, and previously announced plans to retire several units because gas and renewable options are cheaper. The utility’s new release noted that these decisions are not final and did not address the impact of the newly announced federal Affordable Clean Energy’s more coal-friendly standards.

Two coal-fired units at Cayuga Station in Vermillion County, Ind., will be shuttered in 2028 instead of the previously planned 2035 and 2037, giving nine more years for the combined 995 MW in generating capacity.

Duke Energy Indiana had planned to close five coal-fired units–totaling more than 3,100 MW–at Gibson Station in the 2040s. The 622-MW Unit 4’s planned retirement will be moved up to 2026, while Units 1 and 2–both 630 MW–will stay in operation until 2038.

Units 2 and 4 at Gallagher Station in Floyd County, both 140 MW, will stay on their scheduled retirements in 2022. Duke is also moving up the retirement of its gas-fired combined cycle plant in Hamilton County four years to 2034.

The Edwardsport coal-to-gas station in Knox County will stay in operation until 2045, the utility said. Duke called it “one of the cleanest coal-fired plants in the world,” according to the summary. The plant converts coal to synthesis gas and then burns that to generate power.

By 2037, Duke overall plans to replace the retired coal-fired power with 1,240 MW of natural gas, 700 MW of wind energy and 1,650 MW of solar power capacity, according to the summary.

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