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ComEd rep explains PJM auction effect on supply charges; Roscoe’s municipal aggregation may blunt immediate impact

5951913 · May 21, 2025
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Summary

A Commonwealth Edison representative briefed trustees on how higher PJM capacity auction prices are passing through as higher supply charges, estimating about a $10.50 average monthly net increase for residential customers; trustees noted Roscoe’s municipal aggregation rate is locked for at least a year.

A Commonwealth Edison representative visiting the May 20 Roscoe Village Board meeting explained that recent PJM capacity-auction results will raise supply charges that are passed through to ratepayers, and that those increases are separate from utility delivery charges.

"So your bill is at the end of the day, the net sum gain is $10.50," the ComEd representative said, describing the company’s role as the delivery service provider and explaining that ComEd does not generate electricity but buys supply and passes those costs through to customers.

Trustees asked several follow-up questions during the public portion of the meeting. One trustee noted the village participates in municipal aggregation and said the village’s aggregation contract will hold rates at the current level for at least the next year, which will shield participating residents from immediate supply-price changes. The ComEd representative also said low‑income assistance programs and energy-efficiency programs are available and that additional support details are posted on ComEd’s website.

Trustees and the representative discussed the roles of the regional transmission organization PJM (which runs capacity auctions across multiple states) versus the local delivery utility. The ComEd representative said the auction covers a 12‑month supply period and that the higher auction prices are likely to be reflected on customers’ bills over the coming 12 months. He offered to meet with residents and local groups to explain bill components and the difference between supply and delivery charges.

No formal action was taken by the board on utilities at the May 20 meeting; the presentation was informational. A trustee said the village’s municipal aggregation provider will remain in place at least through September and residents who are not part of the aggregation can opt into the program, but trustees did not vote on any municipal aggregation change.

The board did not receive a formal estimate of how many Roscoe households would be affected beyond the representative’s average monthly figure, nor did the representative provide a detailed breakdown of the auction mechanics beyond noting that PJM is a federally regulated regional transmission organization.