Tucson Electric Power Co
Investor Owned electric utility · Arizona · #90 of 3,199 U.S. utilities by customers · EIA utility #24211
Tucson Electric Power Co is a investor owned electric utility serving 458,898 customers in Arizona. In 2025 it sold 8,933 gigawatt-hours of electricity for $1.15B in revenue, an average realized rate of 12.89¢ per kWh across all customer classes and 14.88¢ per kWh for residential customers. Its reported service territory covers 2 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 | 416,268 | 3,915 | $582.54M | 14.88¢ | |
| Commercial | 42,059 | 1,970 | $290.89M | 14.77¢ | |
| Industrial | 570 | 3,048 | $278.05M | 9.12¢ | |
| Transportation | 1 | 0.3 | $44.30K | 17.44¢ | |
| Total | 458,898 | 8,933 | $1.15B | 12.89¢ |
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 (784 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 440,831 | 8,718 | $1.01B | 13.40¢ |
| 2022 | 445,122 | 8,810 | $1.06B | 13.73¢ |
| 2023 | 449,674 | 8,954 | $1.18B | 14.97¢ |
| 2024 | 455,209 | 8,964 | $1.23B | 15.63¢ |
| 2025 | 458,898 | 8,933 | $1.15B | 14.88¢ |
Reliability (2025)
Average outage time (SAIDI): 42 minutes per customer per year
Average outages (SAIFI): 0.65 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: 11,339 GWh
Wholesale power purchased: 3,426 GWh
Winter peak demand: 1,722 MW
Energy losses: 7.8% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 511,437 meters
Customer-sited generation (net metering): 55,910 installations, 542.5 MW of capacity
Counties served
Cochise, AZPima, AZ
Other large utilities in Arizona
- Arizona Public Service Co - 1,433,294 customers, residential 17.03¢
- Salt River Project - 1,188,189 customers, residential 13.98¢
- 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 #24211 in the EIA frame.