Compare Ameren and ComEd electricity rates side by side. See per-kWh rates, bills, peak hours, and rate plans to find the cheaper option.
Rate Comparison
Metric
Ameren
ComEd
State
Illinois
Illinois
Standard Plan Rate
~12.6¢/kWh
~9.6¢/kWh
Plan Rate Range
10¢–16.4¢/kWh
4¢–10.7¢/kWh
Time-of-Use
10¢/kWh off-peak / 40.6¢/kWh peak
4¢/kWh off-peak / 10.7¢/kWh peak
Data Updated
January 2026
February 2026
Key Findings
ComEd has the lower median rate (9.60¢/kWh vs 12.60¢/kWh) — about 23.8% less expensive on the standard plan.
Both utilities serve Illinois, so customers in overlapping or neighboring service areas can use this comparison to validate their bill.
Time-of-use plans can save 15–30% if you can shift dishwasher, laundry, and EV charging to off-peak windows.
Use our free bill check to confirm whether your current plan is the cheapest option for your usage.
Frequently Asked Questions
Which has lower rates: Ameren or ComEd?
Based on median residential rates, ComEd has the lower per-kWh rate. The standard plans are ~12.6¢/kWh (Ameren) and ~9.6¢/kWh (ComEd).
Can I switch between Ameren and ComEd?
These two utilities operate in Illinois, but most customers don't get to choose between them — service territory is determined by your address. In deregulated states, you can change the supplier portion of your bill but not the utility itself.
How do I check if I'm overpaying on my Ameren or ComEd bill?
Upload your bill to Utility Check for an independent verification. We compare your rate plan against alternatives, identify billing errors, and provide a call script to dispute incorrect charges. The free sanity check takes under 60 seconds.
Are time-of-use plans worth it for Ameren or ComEd customers?
TOU plans typically save 15–30% for customers who can shift heavy usage (laundry, dishwasher, EV charging, pool pumps) to off-peak windows. Ameren offers Smart Savers at 10¢/kWh off-peak / 40.6¢/kWh peak. ComEd offers Time-of-Use (TOU) at 4¢/kWh off-peak / 10.7¢/kWh peak.