Tucson Electric Power Co. electricity rates
Investor-owned utility · Arizona · WECC region · CAISO
Tucson Electric Power Co. is a for-profit, investor-owned utility regulated by the state utility commission, serving 416,268 homes in Arizona. Its residential customers pay an average of 14.89¢/kWh including fixed and delivery charges, 17% less than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
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Tucson Electric Power Co. bill estimates
| Monthly use | At average all-in rate |
|---|---|
| 500 kWh | $74.45 |
| 1,000 kWh | $148.90 |
| 1,500 kWh | $223.35 |
| 2,000 kWh | $297.80 |
Tucson Electric Power Co. residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Special Residential Electric Service Time-of-Use Program TRRSPT - Three Phasetime-of-use | 2025-09-30 | $25.44 | 16.9¢ (2pm–8pm) · 11.3¢ (12am–2pm, 8pm–12am) — summer weekdays |
| Special Residential Electric Service Time-of-Use Program TRRSPT - Single Phasetime-of-use | 2025-09-30 | $20.44 | 16.9¢ (2pm–8pm) · 11.3¢ (12am–2pm, 8pm–12am) — summer weekdays |
| Special Residential Electric Service TRRSP - Three Phasetime-of-use | 2025-09-30 | $28.44 | 11.9¢ (12am–12am) — summer weekdays |
| Special Residential Electric Service TRRSP - Single Phasetime-of-use | 2025-09-30 | $23.44 | 11.9¢ (12am–12am) — summer weekdays |
| Residential Electric Service TRRES (Three Phase)time-of-use | 2025-09-30 | $28.44 | 12.8¢ (12am–12am) — summer weekdays |
| Residential Electric Service TRRES (Single Phase)time-of-use | 2025-09-30 | $23.44 | 12.8¢ (12am–12am) — summer weekdays |
| Residential Time-of-Use TRREST - Single Phasetime-of-use | 2025-09-30 | $20.44 | 19.2¢ (3pm–7pm) · 12.0¢ (12am–3pm, 7pm–12am) — summer weekdays |
| Residential Time-of-Use TRREST - Three Phasetime-of-use | 2025-09-30 | $25.44 | 19.2¢ (3pm–7pm) · 12.0¢ (12am–3pm, 7pm–12am) — summer weekdays |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Tucson Electric Power Co. rate history
2015–2025: +29% change in the average residential rate (11.51¢ → 14.88¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Tucson Electric Power Co. | Arizona avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 42 | 70 | 266 |
| Outages per customer (SAIFI) | 0.65 | 0.89 | 1.34 |
| Average restoration time (CAIDI) | 65 min | — | — |
| Outage minutes excluding major storms | 42 | 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 Tucson Electric Power Co.'s counties, customers averaged 54 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Pima | 57 | 34 | 18,508 | 2025-11-12 |
| Cochise | 36 | 28 | 8,138 | 2025-07-23 |
Tucson Electric Power Co. service area
Tucson Electric Power Co. serves 2 counties in Arizona and 66 ZIP codes.
Cochise, Pima
Cities: Tucson, Casas Adobes, Catalina Foothills, Oro Valley, Marana, Drexel Heights, Sahuarita, Green Valley, Tanque Verde, Flowing Wells, Saddlebrooke, Tucson Estates, Vail, Picture Rocks, Valencia West, Catalina, Avra Valley, South Tucson, Corona de Tucson, Three Points, Summit, Tortolita, Sells, East Sahuarita, Arivaca Junction
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | Time-of-use rates |
| Homes on time-based rates | 68,270 |
| Net-metered solar homes | 54,719 |
| Home batteries paired with solar | 2,478 |
| Homes in demand response (e.g. thermostat rebates) | 17,961 |
| Residential efficiency incentives paid (2025) | $6,440,000 |
| Residential energy saved by programs | 58,559 MWh |
Tucson Electric Power Co. at a glance
| Ownership | Investor-owned utility |
| Services | Generation, Transmission, Distribution, Wholesale Marketing |
| Commercial rate | 14.84¢/kWh |
| Industrial rate | 9.17¢/kWh |
| Retail revenue (2025) | $1,151,524,300 |
| Electricity sold (2025) | 8,933,413 MWh |
| Peak demand | 2,908 MW summer · 1,722 MW winter |
| Power from own generation | 77% (rest purchased) |
| Line losses | 5.1% |
| Balancing authority | TEPC |
| EIA utility ID | 24211 |
| Website | www.tep.com |
Other utilities in Arizona
Frequently asked questions
What is Tucson Electric Power Co.'s electricity rate?
Tucson Electric Power Co. residential customers pay an average of 14.89¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 3% below the Arizona average of 15.40¢ and 17% below the U.S. average.
What is the average Tucson Electric Power Co. electric bill?
About $117 a month. The average Tucson Electric Power Co. home uses 784 kWh a month. At 1,000 kWh the bill would be about $149.
How many customers does Tucson Electric Power Co. have?
Tucson Electric Power Co. serves 416,268 residential customers and 458,898 customers in total in Arizona, across 2 counties.
How reliable is Tucson Electric Power Co.?
In 2025, the average Tucson Electric Power Co. customer was without power for 42 min (SAIDI) over 0.65 interruptions (SAIFI), including major storms. Excluding major event days it was 42 min. The Arizona average was 70 min and the U.S. average 4 hr 26 min.
Does Tucson Electric Power Co. offer time-of-use rates?
Yes. The OpenEI rate database lists 8 time-of-use residential plans, including Special Residential Electric Service Time-of-Use Program TRRSPT - Three Phase. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does Tucson Electric Power Co. offer net metering for solar?
Tucson Electric Power Co. had 54,719 residential net-metered customers in 2025 with 379.9 MW of capacity and 2,478 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 Tucson Electric Power Co. before making decisions.