Three Illinois nuclear power stations with six reactors – Byron, Dresden, and Quad Cities – did not clear a long-delayed PJM Interconnection capacity auction, Exelon Generation reported in a filing with the Securities and Exchange Commission.

PJM, the regional transmission organisation, uses the capacity auctions to procure power supplies for 65 million people three years into the future.

According to PJM, nuclear generators cleared an additional 4,460 MW compared to the last auction. Renewables, nuclear and new natural gas generators saw the greatest increases in cleared capacity, while coal units saw the largest decrease.