ComEd, the Illinois arm of Exelon, filed its annual cost‑revenue reconciliation with the Illinois Commerce Commission on May 1 2026. The filing compares the revenues billed in 2025 to the revenues approved under the company’s multi‑year rate plan and is a routine part of the regulatory process that ensures actual costs are aligned with approved rates.
If approved, the combined effect of the revenue and cost reconciliations will lower the average 2027 residential bill by $1.22. The revenue reconciliation, filed March 20, is expected to refund $128 million to customers, translating to a $1.09 reduction per month, while the cost reconciliation, filed May 1, seeks to recover $234.3 million, yielding an additional $0.13 per month. The refund is driven by higher 2025 electricity usage during a record stretch of 90‑degree‑plus days, not by higher rates.
ComEd serves more than 4 million customers in northern Illinois, not the 1.5 million figure previously cited. The filing therefore covers a customer base that is nearly three times larger than the original estimate, underscoring the broader impact of the reconciliation on rate‑payer bills.
The reconciliation is part of Exelon’s $41.3 billion capital plan through 2029. Recovering costs through regulatory mechanisms is essential for funding grid modernization and meeting the growing electrification demand. The filing also ties into a separate $15.3 billion, four‑year grid‑modernization plan for 2028‑2031, which focuses on reliability, capacity expansion, and resiliency for data centers, electric vehicles, and other electrification drivers.
Management emphasized the importance of balancing investment with affordability. "As we continue to make the critical investments needed to modernize our energy infrastructure, we remain focused on supporting our customers by providing reliable and resilient service, maintaining a sharp focus on cost management, and advocating for policies that advance customer equity and energy supply solutions," said Exelon CEO Calvin Butler.
The filing demonstrates ComEd’s ability to recover costs while maintaining competitive pricing, supporting customer affordability, and advancing its long‑term capital strategy.
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