Ajo Improvement Co
Investor Owned electric utility · Arizona · #2,487 of 3,199 U.S. utilities by customers · EIA utility #176
Ajo Improvement Co is a investor owned electric utility serving 1,005 customers in Arizona. In 2025 it sold 8.1 gigawatt-hours of electricity for $1.06M in revenue, an average realized rate of 13.07¢ per kWh across all customer classes and 13.53¢ per kWh for residential customers. Its reported service territory covers 1 counties. EIA records its activities as: bundled.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 808 | 5.0 | $671.20K | 13.53¢ | |
| Commercial | 197 | 3.1 | $387.10K | 12.35¢ | |
| Total | 1,005 | 8.1 | $1.06M | 13.07¢ |
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 (512 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 1,039 | 7.9 | $788.70K | 10.33¢ |
| 2022 | 1,035 | 8.3 | $891.60K | 11.04¢ |
| 2023 | 1,028 | 8.8 | $981.80K | 11.71¢ |
| 2024 | 1,031 | 8.7 | $1.06M | 12.56¢ |
| 2025 | 1,005 | 8.1 | $1.06M | 13.53¢ |
Energy supply (2025)
Net generation: — GWh
Wholesale power purchased: 8.1 GWh
Winter peak demand: 2 MW
Meters & rooftop solar (2025)
Smart (AMI) meters: 0.0% of 1,005 meters
Customer-sited generation (net metering): 21 installations, 0.1 MW of capacity
Counties served
Pima, 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¢
- 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¢
All Arizona utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #176 in the EIA frame.