Avista Corp. electricity rates
Investor-owned utility · Idaho
Avista Corp. is a for-profit, investor-owned utility regulated by the state utility commission, serving 129,181 homes in Idaho. Its residential customers pay an average of 12.65¢/kWh including fixed and delivery charges, 30% 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 | $63.25 | $73.31 |
| 1,000 kWh | $126.50 | $140.23 |
| 1,500 kWh | $189.75 | $212.57 |
| 2,000 kWh | $253.00 | $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: +25% change in the average residential rate (9.49¢ → 11.84¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Avista Corp. | Idaho avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 973 | 310 | 266 |
| Outages per customer (SAIFI) | 1.89 | 1.15 | 1.34 |
| Average restoration time (CAIDI) | 8 hr 35 min | — | — |
| Outage minutes excluding major storms | 208 | 155 | 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 15 hr 39 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Clearwater | 4,968 | 65 | 3,176 | 2025-12-17 |
| Benewah | 4,056 | 33 | 5,326 | 2025-12-18 |
| Shoshone | 3,373 | 51 | 10,231 | 2025-12-17 |
| Idaho | 1,523 | 56 | 6,938 | 2025-02-05 |
| Latah | 1,399 | 49 | 12,381 | 2025-12-17 |
| Lewis | 975 | 16 | 1,076 | 2025-02-05 |
| Bonner | 733 | 94 | 14,387 | 2025-12-17 |
| Nez Perce | 690 | 41 | 7,496 | 2025-03-13 |
| Kootenai | 410 | 36 | 22,012 | 2025-12-17 |
Avista Corp. service area
Avista Corp. serves 9 counties in Idaho and 81 ZIP codes.
Benewah, Bonner, Clearwater, Idaho, Kootenai, Latah, Lewis, Nez Perce, Shoshone
Cities: Coeur d'Alene, Lewiston, Post Falls, Moscow, Hayden, Sandpoint, Rathdrum, Grangeville, Orofino, Saint Maries, Dalton Gardens, Spirit Lake, Kellogg, Priest River, Pinehurst, Osburn, Kamiah, Lapwai, Ponderay, Plummer
Programs, smart meters & solar
| Smart meters (AMI) for homes | 0% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 835 |
| Residential efficiency incentives paid (2025) | $624,000 |
| Residential energy saved by programs | 2,778 MWh |
Avista Corp. at a glance
| Ownership | Investor-owned utility |
| Services | — |
| Commercial rate | 10.28¢/kWh |
| Industrial rate | 5.50¢/kWh |
| Retail revenue (2025) | $328,916,500 |
| Electricity sold (2025) | 3,649,166 MWh |
| Balancing authority | AVA |
| EIA utility ID | 20169 |
Other utilities in Idaho
Frequently asked questions
What is Avista Corp.'s electricity rate?
Avista Corp. residential customers pay an average of 12.65¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 0% below the Idaho average of 12.65¢ and 30% below the U.S. average.
What is the average Avista Corp. electric bill?
About $114 a month. The average Avista Corp. home uses 900 kWh a month. At 1,000 kWh the bill would be about $127.
How many customers does Avista Corp. have?
Avista Corp. serves 129,181 residential customers and 149,098 customers in total in Idaho, across 9 counties.
How reliable is Avista Corp.?
In 2025, the average Avista Corp. customer was without power for 16 hr 13 min (SAIDI) over 1.89 interruptions (SAIFI), including major storms. Excluding major event days it was 3 hr 28 min. The Idaho average was 5 hr 10 min and the U.S. average 4 hr 26 min.
Does Avista Corp. offer net metering for solar?
Avista Corp. had 835 residential net-metered customers in 2025 with 7.5 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.