Stillwater Utilities Authority
Municipal electric utility · Oklahoma · #674 of 3,199 U.S. utilities by customers · EIA utility #18125
Stillwater Utilities Authority is a municipal electric utility serving 22,134 customers in Oklahoma. In 2025 it sold 434 gigawatt-hours of electricity for $54.12M in revenue, an average realized rate of 12.46¢ per kWh across all customer classes and 13.79¢ per kWh for residential customers. Its reported service territory covers 1 counties. EIA records its activities as: generation, distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 19,604 | 207 | $28.56M | 13.79¢ | |
| Commercial | 2,525 | 180 | $21.33M | 11.83¢ | |
| Industrial | 5 | 47.0 | $4.23M | 9.00¢ | |
| Total | 22,134 | 434 | $54.12M | 12.46¢ |
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 (880 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 21,806 | 447 | $47.58M | 11.44¢ |
| 2022 | 22,047 | 454 | $57.14M | 13.41¢ |
| 2023 | 22,150 | 434 | $56.29M | 13.80¢ |
| 2024 | 22,191 | 440 | $53.56M | 13.25¢ |
| 2025 | 22,134 | 434 | $54.12M | 13.79¢ |
Reliability (2025)
Average outage time (SAIDI): 1,024 minutes per customer per year
Average outages (SAIFI): 1.55 per customer
Average restoration time (CAIDI): 661 minutes
As reported for Oklahoma under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: — GWh
Wholesale power purchased: 482 GWh
Winter peak demand: 89 MW
Energy losses: 7.3% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 99.4% of 22,134 meters
Customer-sited generation (net metering): 60 installations, 0.5 MW of capacity
Counties served
Payne, OK
Other large utilities in Oklahoma
- Oklahoma Gas & Electric Co - 909,620 customers, residential 12.43¢
- Public Service Co of Oklahoma - 588,941 customers, residential 14.23¢
- Oklahoma Electric Coop Inc - 65,196 customers, residential 12.87¢
- City of Edmond - (OK) - 44,881 customers, residential 10.73¢
- Northeast Oklahoma Electric Co - 42,301 customers, residential 13.79¢
- Verdigris Valley Elec Coop Inc - 39,439 customers, residential 12.40¢
- East Central Oklahoma Elec Coop Inc - 37,718 customers, residential 13.59¢
- Tri-County Electric Coop, Inc (OK) - 31,996 customers, residential 15.95¢
All Oklahoma utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #18125 in the EIA frame.