Salt River Project
Political Subdivision electric utility · Arizona · #32 of 3,199 U.S. utilities by customers · EIA utility #16572
Salt River Project is a political subdivision electric utility serving 1,188,189 customers in Arizona. In 2025 it sold 34,398 gigawatt-hours of electricity for $4.07B in revenue, an average realized rate of 11.83¢ per kWh across all customer classes and 13.98¢ per kWh for residential customers. Its reported service territory covers 3 counties. EIA records its activities as: generation, transmission, buying transmission, distribution, wholesale marketing.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 1,074,095 | 14,729 | $2.06B | 13.98¢ | |
| Commercial | 114,048 | 14,701 | $1.60B | 10.85¢ | |
| Industrial | 45 | 4,957 | $414.19M | 8.36¢ | |
| Transportation | 1 | 10.7 | $1.17M | 10.92¢ | |
| Total | 1,188,189 | 34,398 | $4.07B | 11.83¢ |
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 (1,143 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 1,098,151 | 30,163 | $2.94B | 11.50¢ |
| 2022 | 1,118,823 | 31,233 | $3.15B | 11.88¢ |
| 2023 | 1,141,630 | 31,840 | $3.40B | 12.47¢ |
| 2024 | 1,166,094 | 33,577 | $3.89B | 13.46¢ |
| 2025 | 1,188,189 | 34,398 | $4.07B | 13.98¢ |
Reliability (2025)
Average outage time (SAIDI): 66 minutes per customer per year
Average outages (SAIFI): 1.02 per customer
Average restoration time (CAIDI): 65 minutes
As reported for Arizona 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: 30,611 GWh
Wholesale power purchased: 14,419 GWh
Winter peak demand: 5,252 MW
Energy losses: 1.8% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 99.9% of 1,273,971 meters
Customer-sited generation (net metering): 64,484 installations, 606.4 MW of capacity
Counties served
Gila, AZMaricopa, AZPinal, AZ
Other large utilities in Arizona
- Arizona Public Service Co - 1,433,294 customers, residential 17.03¢
- Tucson Electric Power Co - 458,898 customers, residential 14.88¢
- UNS Electric, Inc - 107,073 customers, residential 16.99¢
- Trico Electric Cooperative Inc - 56,123 customers, residential 14.26¢
- Sulphur Springs Valley E C Inc - 54,786 customers, residential 14.61¢
- Navopache Electric Coop, Inc - 46,592 customers, residential 13.52¢
- Mohave Electric Cooperative, Inc. - 46,326 customers, residential 11.27¢
- Navajo Tribal Utility Authority - 43,250 customers, residential 16.41¢
All Arizona utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #16572 in the EIA frame.