City of Springfield - (IL)
Municipal electric utility · Illinois · #282 of 3,199 U.S. utilities by customers · EIA utility #17828
City of Springfield - (IL) is a municipal electric utility serving 70,871 customers in Illinois. In 2025 it sold 1,490 gigawatt-hours of electricity for $207.23M in revenue, an average realized rate of 13.91¢ per kWh across all customer classes and 13.09¢ per kWh for residential customers. Its reported service territory covers 1 counties. EIA records its activities as: generation, transmission, distribution, wholesale marketing.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 59,366 | 616 | $80.61M | 13.09¢ | |
| Commercial | 11,505 | 874 | $126.61M | 14.48¢ | |
| Total | 70,871 | 1,490 | $207.23M | 13.91¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (864 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 71,796 | 1,521 | $182.80M | 11.53¢ |
| 2022 | 71,917 | 1,542 | $195.73M | 11.91¢ |
| 2023 | 70,331 | 1,466 | $185.83M | 11.90¢ |
| 2024 | 71,179 | 1,468 | $186.95M | 11.95¢ |
| 2025 | 70,871 | 1,490 | $207.23M | 13.09¢ |
Reliability (2025)
Average outage time (SAIDI): 71 minutes per customer per year
Average outages (SAIFI): 0.79 per customer
Average restoration time (CAIDI): 90 minutes
As reported for Illinois under the Other standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: 961 GWh
Wholesale power purchased: 727 GWh
Winter peak demand: 284 MW
Energy losses: 7.5% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 0.0% of 69,703 meters
Customer-sited generation (net metering): 658 installations, 12.4 MW of capacity
Counties served
Sangamon, IL
Other large utilities in Illinois
- Commonwealth Edison Co - 3,261,563 customers, residential 17.71¢
- Ameren Illinois Company - 663,709 customers, residential 16.70¢
- MC Squared Energy Services, LLC - 293,923 customers, residential 8.14¢
- Homefield Energy - 160,102 customers, residential 10.64¢
- Energy Services Providers, Inc - 90,477 customers, residential 13.01¢
- Just Energy Solutions Inc. - 80,538 customers, residential 11.33¢
- Residents Energy, LLC - 69,834 customers, residential 17.34¢
- City of Naperville - (IL) - 64,025 customers, residential 14.61¢
All Illinois utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #17828 in the EIA frame.