Avista Corp. electricity rates
Investor-owned utility · Montana
Avista Corp. is a for-profit, investor-owned utility regulated by the state utility commission, serving 10 homes in Montana. Its residential customers pay an average of 8.69¢/kWh including fixed and delivery charges, 52% 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 | $43.45 | $73.31 |
| 1,000 kWh | $86.90 | $140.23 |
| 1,500 kWh | $130.35 | $212.57 |
| 2,000 kWh | $173.80 | $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: -3% change in the average residential rate (8.98¢ → 8.67¢). Annual EIA-861 data.
Outages & reliability
Right now
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Reliability history
Avista Corp. doesn't report reliability metrics to EIA (common for small utilities).
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 25 hr 45 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Sanders | 1,545 | 40 | 6,903 | 2025-12-17 |
Avista Corp. service area
Avista Corp. serves Sanders County in Montana and 5 ZIP codes.
Sanders
Cities: Thompson Falls
Programs, smart meters & solar
| Smart meters (AMI) for homes | 0% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 0 reported |
Avista Corp. at a glance
| Ownership | Investor-owned utility |
| Services | — |
| Commercial rate | 10.85¢/kWh |
| Retail revenue (2025) | $103,900 |
| Electricity sold (2025) | 1,050 MWh |
| Balancing authority | AVA |
| EIA utility ID | 20169 |
Other utilities in Montana
Frequently asked questions
What is Avista Corp.'s electricity rate?
Avista Corp. residential customers pay an average of 8.69¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 37% below the Montana average of 13.84¢ and 52% below the U.S. average.
What is the average Avista Corp. electric bill?
About $142 a month. The average Avista Corp. home uses 1,633 kWh a month. At 1,000 kWh the bill would be about $87.
How many customers does Avista Corp. have?
Avista Corp. serves 10 residential customers and 32 customers in total in Montana, across 1 county.
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.