Avista Corp. electricity rates
Investor-owned utility · Washington · WECC region
Avista Corp. is a for-profit, investor-owned utility regulated by the state utility commission, serving 247,159 homes in Washington. Its residential customers pay an average of 14.62¢/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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Avista Corp. bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $73.10 | $73.31 |
| 1,000 kWh | $146.20 | $140.23 |
| 1,500 kWh | $219.30 | $212.57 |
| 2,000 kWh | $292.40 | $296.01 |
*1 Residential Service (effective 2026-01-01, $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.
Avista Corp. residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| 1 Residential Service | 2026-01-01 | $10.00 | 12.66¢ first 800 kWh, 14.47¢ first 1,500 kWh, 16.69¢ after |
| 12 Residential and Farm General Service | 2026-01-01 | $30.00 | 14.79¢ first 3,650 kWh, 11.11¢ after |
| 12 Residential and Farm General Service - Three Phase | 2026-01-01 | $30.00 | 14.79¢ first 3,650 kWh, 11.11¢ after |
| 22 Residential and Farm Large General Service - Primary | 2026-01-01 | $900.00 | 9.46¢ first 250,000 kWh, 8.55¢ after |
| 22 Residential and Farm Large General Service - Secondary | 2026-01-01 | $900.00 | 9.24¢ first 250,000 kWh, 8.33¢ after |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Avista Corp. rate history
2015–2025: +51% change in the average residential rate (9.35¢ → 14.16¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Avista Corp. | Washington avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 200 | 372 | 266 |
| Outages per customer (SAIFI) | 0.97 | 1.42 | 1.34 |
| Average restoration time (CAIDI) | 3 hr 26 min | — | — |
| Outage minutes excluding major storms | 119 | 141 | 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 Avista Corp.'s counties, customers averaged 4 hr 20 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Pend Oreille | 1,209 | 85 | 2,526 | 2025-12-17 |
| Ferry | 1,105 | 46 | 1,224 | 2025-04-16 |
| Stevens | 764 | 79 | 9,427 | 2025-12-17 |
| Lincoln | 436 | 44 | 2,719 | 2025-07-23 |
| Asotin | 319 | 28 | 2,210 | 2025-04-30 |
| Whitman | 267 | 37 | 5,825 | 2025-12-17 |
| Spokane | 186 | 43 | 27,258 | 2025-12-17 |
| Adams | 96 | 22 | 1,300 | 2025-03-23 |
| Grant | 0 | 0 | 10 | 2025-12-06 |
Avista Corp. service area
Avista Corp. serves 9 counties in Washington and 120 ZIP codes.
Adams, Asotin, Ferry, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Whitman
Cities: Spokane, Spokane Valley, Pasco, Pullman, Cheney, Liberty Lake, Othello, Clarkston, Mead, Airway Heights, Clarkston Heights-Vineland, Otis Orchards-East Farms, Country Homes, Connell, West Clarkston-Highland, Medical Lake, Town and Country, Colville, Mattawa, Deer Park, West Pasco, Colfax, Fairchild Air Force Base, Warden, Chewelah, Dayton, Royal City, Newport, Millwood, Davenport, Ritzville, Kettle Falls, Pomeroy, Asotin, Palouse
Programs, smart meters & solar
| Smart meters (AMI) for homes | 99% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 5,131 |
| Residential efficiency incentives paid (2025) | $752,000 |
| Residential energy saved by programs | 7,286 MWh |
Avista Corp. at a glance
| Ownership | Investor-owned utility |
| Services | Generation, Transmission, Distribution, Wholesale Marketing, Bundled |
| Commercial rate | 15.40¢/kWh |
| Industrial rate | 8.76¢/kWh |
| Retail revenue (2025) | $794,693,400 |
| Electricity sold (2025) | 6,106,630 MWh |
| Peak demand | 1,837 MW summer · 1,832 MW winter |
| Power from own generation | 55% (rest purchased) |
| Line losses | 2.1% |
| Balancing authority | AVA |
| EIA utility ID | 20169 |
Other utilities in Washington
Frequently asked questions
What is Avista Corp.'s electricity rate?
Avista Corp. residential customers pay an average of 14.62¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 4% above the Washington average of 14.12¢ and 19% below the U.S. average.
What is the average Avista Corp. electric bill?
About $134 a month. The average Avista Corp. home uses 916 kWh a month. At 1,000 kWh the bill would be about $146.
How many customers does Avista Corp. have?
Avista Corp. serves 247,159 residential customers and 275,281 customers in total in Washington, across 9 counties.
How reliable is Avista Corp.?
In 2025, the average Avista Corp. customer was without power for 3 hr 20 min (SAIDI) over 0.97 interruptions (SAIFI), including major storms. Excluding major event days it was 119 min. The Washington average was 6 hr 12 min and the U.S. average 4 hr 26 min.
Does Avista Corp. offer net metering for solar?
Avista Corp. had 5,131 residential net-metered customers in 2025 with 33.1 MW of capacity. 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 Avista Corp. before making decisions.