UNS Electric electricity rates
Investor-owned utility · Arizona · WECC region · CAISO
UNS Electric is a for-profit, investor-owned utility regulated by the state utility commission, serving 95,288 homes in Arizona. Its residential customers pay an average of 14.64¢/kWh including fixed and delivery charges, 19% less than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
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UNS Electric bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $73.20 | $80.77 |
| 1,000 kWh | $146.40 | $157.57 |
| 1,500 kWh | $219.60 | $236.44 |
| 2,000 kWh | $292.80 | $315.31 |
*RES-01 - Residential (effective 2014-06-01, $10.00/month customer charge), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
UNS Electric residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| RES-01 - Residential | 2014-06-01 | $10.00 | 13.85¢ first 400 kWh, 15.36¢ first 1,000 kWh, 15.77¢ after |
| C.A.R.E.S | 2014-06-01 | $4.90 | 8.07¢ first 400 kWh, 9.71¢ after |
| C.A.R.E.S - M | 2014-06-01 | $4.90 | 8.07¢ first 400 kWh, 9.71¢ after |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
UNS Electric rate history
2015–2025: +64% change in the average residential rate (10.38¢ → 16.99¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | UNS Electric | Arizona avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 81 | 70 | 266 |
| Outages per customer (SAIFI) | 0.94 | 0.89 | 1.34 |
| Average restoration time (CAIDI) | 87 min | — | — |
| Outage minutes excluding major storms | 64 | 63 | 121 |
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across UNS Electric's counties, customers averaged 59 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Santa Cruz | 1,686 | 43 | 2,487 | 2025-06-02 |
| Mohave | 45 | 19 | 9,999 | 2025-03-14 |
UNS Electric service area
UNS Electric serves 2 counties in Arizona and 47 ZIP codes.
Mohave, Santa Cruz
Cities: Lake Havasu City, Prescott, Bullhead City, Kingman, Green Valley, Nogales, Rio Rico, New Kingman-Butler, Camp Verde, Golden Valley, Williams, Parker, Mohave Valley, Desert Hills, Golden Shores, Dolan Springs, Beaver Dam, Bagdad, Cienega Springs, Valle Vista, Meadview, Tubac, Peach Springs, Arivaca Junction, Willow Valley
Programs, smart meters & solar
| Smart meters (AMI) for homes | 96% |
| Time-based rate programs | Time-of-use rates |
| Homes on time-based rates | 22,510 |
| Net-metered solar homes | 11,432 |
| Home batteries paired with solar | 549 |
| Residential efficiency incentives paid (2025) | $773,000 |
| Residential energy saved by programs | 11,372 MWh |
UNS Electric at a glance
| Ownership | Investor-owned utility |
| Services | Generation, Transmission, Distribution, Wholesale Marketing |
| Commercial rate | 16.18¢/kWh |
| Industrial rate | 13.39¢/kWh |
| Retail revenue (2025) | $295,530,000 |
| Electricity sold (2025) | 1,800,937 MWh |
| Peak demand | 486 MW summer · 291 MW winter |
| Power from own generation | 34% (rest purchased) |
| Line losses | 5.2% |
| Balancing authority | TEPC |
| EIA utility ID | 19728 |
| Website | www.uesaz.com |
Other utilities in Arizona
Frequently asked questions
What is UNS Electric's electricity rate?
UNS Electric residential customers pay an average of 14.64¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 5% below the Arizona average of 15.40¢ and 19% below the U.S. average.
What is the average UNS Electric electric bill?
About $124 a month. The average UNS Electric home uses 849 kWh a month. At 1,000 kWh the bill would be about $146.
How many customers does UNS Electric have?
UNS Electric serves 95,288 residential customers and 107,073 customers in total in Arizona, across 2 counties.
How reliable is UNS Electric?
In 2025, the average UNS Electric customer was without power for 81 min (SAIDI) over 0.94 interruptions (SAIFI), including major storms. Excluding major event days it was 64 min. The Arizona average was 70 min and the U.S. average 4 hr 26 min.
Does UNS Electric offer time-of-use rates?
UNS Electric reports offering time-of-use rates to residential customers. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does UNS Electric offer net metering for solar?
UNS Electric had 11,432 residential net-metered customers in 2025 with 91.6 MW of capacity and 549 solar-paired batteries. Estimate solar savings at this utility's rate.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with UNS Electric before making decisions.