South Carolina’s PSC issued its order accepting Dominion’s modified 2020 IRP on June 18.
That was a reversal from its December vote, when the commission faulted Dominion’s IRP for failing to include any renewable energy additions before 2026, and for not including a demand-side management resource option as well.
The commission, in its order published Dec. 23, also called upon the utility to explore or model the retirement of its coal-fired plants before 2028.
Will Harlan, senior representative for the Sierra Club’s Beyond Coal campaign in South Carolina, said the difference between Dominion’s original IRP and the modified plan the PSC just approved is significant.
Dominion, under one scenario the utility has presented as a favored plan in its new, modified 2020 IRP, says it would retire or modify all three of its three coal-fired plants in South Carolina within a decade.
The utility said it plans to shut down two of the plants by 2028, the Wateree Station south of Columbia, and the Williams Station north of Charleston, while the third, Cope Station near Orangeburg, would switch to gas by 2030.
Dominion’s revamped IRP also goes big on renewable energy, in contrast to its previous plan, which had no additions over the next half decade.