Arizona · EIA utility 176 · Full-service utility
Ajo Improvement Co electricity rates in Arizona, 2025
Ajo Improvement Co’s 808 residential customers paid an average of 13.53¢ per kWh in 2025, 11% below the Arizona average of 15.26¢. The typical home used 512 kWh a month, for an average bill of $69.
- 13.53¢avg ¢/kWh (2025)+0.96¢ (+7.7%) vs 2024
- $69Avg monthly billArizona: $157
- 512 kWhAvg monthly useArizona: 1,030 kWh
- 808Residential customersFull-service utility
| Sector | Customers | Sales (MWh) | Revenue | ¢/kWh 2025 | ¢/kWh 2024 | Change |
|---|---|---|---|---|---|---|
| Residential | 808 | 4,962 | $671,200 | 13.53¢ | 12.56¢ | +0.96¢ (+7.7%) |
| Commercial | 197 | 3,134 | $387,100 | 12.35¢ | 11.44¢ | +0.91¢ (+8.0%) |
| Industrial | 0 | 0 | $0 | n/a | n/a | n/a |
| All sectors | 1,005 | 8,096 | $1,058,300 | 13.07¢ | 12.14¢ | +0.94¢ (+7.7%) |
How Ajo Improvement Co compares
- Arizona residential average, 2025: 15.26¢ per kWh, 1,030 kWh a month, $157 average bill. U.S. average: 17.23¢, 874 kWh, $151.
- Latest monthly figure: Arizona homes paid 15.05¢ per kWh in August 2026 (preliminary), against 15.09¢ in August 2025. Summer months often run higher than the annual average.
- From 2024 to 2025 this average rose 7.7%; the state average rose 2.4%.
- Ajo Improvement Co is an investor-owned utility, a private company whose rates are set by the state utility commission. Balancing authority: AZPS.
Where Ajo Improvement Co serves
EIA lists 1 Arizona county in its 2025 service territory: Pima.
1 ZIP code is matched to Ajo Improvement Co in NREL’s 2024 ZIP file: 85321. Utility boundaries do not follow ZIP lines, so a ZIP can have more than one provider.
Arizona full-service utilities with similar rates
| Provider | ¢/kWh | Avg bill | Customers |
|---|---|---|---|
| Electrical Dist No2 Pinal County | 13.32¢ | $131 | 5,592 |
| Navopache Electric Coop, Inc | 13.48¢ | $81 | 40,795 |
| Salt River Project | 13.98¢ | $160 | 1,074,095 |
| Electrical Dist No3 Pinal County | 14.02¢ | $162 | 32,951 |
| Trico Electric Cooperative Inc | 14.26¢ | $131 | 53,721 |
| Gila River Indian Utility Authority (GRICUA) | 14.27¢ | $201 | 2,707 |
| Sulphur Springs Valley E C Inc | 14.61¢ | $107 | 46,398 |
| Tucson Electric Power Co | 14.88¢ | $117 | 416,268 |
Sources
- U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861, 2025 final data (f8612025.zip, file dated October 7, 2026): Sales to Ultimate Customers, Average Monthly Bill and Service Territory tables.
- EIA Form EIA-861, 2024 final data (f8612024.zip, file dated December 4, 2025), for the 2024 comparison.
- EIA Electric Power Monthly, Table 5.6.A (average price by state, August 2026 and August 2025; 2026 values are preliminary), file dated October 22, 2026.
- National Renewable Energy Laboratory via OpenEI, U.S. Electric Utility Companies and Rates: Look-up by Zipcode (2024) (investor-owned and other utilities, files dated November 10, 2025), used only to match ZIP codes to utilities.
Average price = residential revenue ÷ residential kWh sold, as reported to EIA. It includes fixed monthly charges, taxes passed through in revenue and seasonal tiers, averaged over the year. Your own rate depends on your tariff and usage.