Avista Corp bill decoder
Avista sells under this tariff at 14.02¢ per kWh all-in, +0.91¢ against the Washington average of 13.11¢. The $10.00 fixed charge is 7% of the bill.
Avista at 1,000 kWh, line by line
Avista bills $10.00 a month, 7% of the $140.23 total at 1,000 kWh. Avista tiers its energy: the first 800 kWh cost 12.662¢, then 16.689¢ above 1,500 kWh (+32%), so 0 of 1,000 kWh pay the top rate. The minimum bill is $10.00.
Avista: what the tariff charges
| Line | Charged | Amount |
|---|---|---|
| Customer charge | Fixed, once a month | $10.00 |
| Energy, tier 1 | First 800 kWh | 12.662¢ per kWh |
| Energy, tier 2 | 800 to 1,500 kWh | 14.467¢ per kWh |
| Energy, tier 3 | Over 1,500 kWh | 16.689¢ per kWh |
| Minimum bill | Monthly floor on the total | $10.00 |
Avista at 500, 1,000 and 2,000 kWh
| kWh | Total | ¢/kWh | Fixed | Energy | WA avg |
|---|---|---|---|---|---|
| 500 | $73.31 | 14.66 | $10.00 | $63.31 | $65.55 |
| 901 (average home) | $125.91 | 13.97 | $10.00 | $115.91 | $118.12 |
| 1,000 | $140.23 | 14.02 | $10.00 | $130.23 | $131.10 |
| 2,000 | $296.01 | 14.80 | $10.00 | $286.01 | $262.20 |
How the Avista total climbs
$41.65 at 250 kWh becomes $462.90 at 3,000 kWh, 11.1 times the bill for 12 times the power.
Avista total in dollars, by kWh
- 42250
- 73500
- 105750
- 1401,000
- 2131,500
- 2962,000
- 4633,000
Check your Avista bill
Avista: tariff against EIA
EIA-861 puts the 2024 home price at 11.87¢ for Avista, across 246,055 home accounts using 901 kWh a month. The tariff gives 13.97¢ ($125.94). The -2.11¢ gap, about -$19.00 a month, is riders, other plans and rate changes.
Avista: sources and limits
- Tariff: 1 Residential Service, effective 2026-01-01, record 6998d19f6f6b18aad80b450d, updated 2026-02-20; decode_tariffs.csv.
- Tariff sheet cited by the record: https://www.myavista.com/-/media/myavista/content-documents/our-rates-and-tariffs/wa/wa_00.
- Data: OpenEI URDB, EIA-861, EIA state data.
Avista: taxes, riders and adjustments sit outside these rates.
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Questions
What is the monthly fixed charge at Avista?
$10.00 a month however little you use. At 500 kWh the $73.31 total is 14% fixed.
How much is 1,000 kWh at Avista?
$140.23: $10.00 fixed plus $130.23 energy, 14.02¢ per kWh. Taxes and riders come on top.
What makes a Avista bill run higher than the tariff?
At 901 kWh the tariff gives 13.97¢ against 11.87¢ in EIA's 2024 average, -2.11¢ apart. Riders, fees and other plans sit in that gap.
What does the last kWh cost at Avista?
Going from 1,000 to 2,000 kWh adds $155.78, or 15.58¢ per extra kWh, against 13.38¢ for 500 to 1,000 kWh.
When did the Avista tariff start?
2026-01-01, which is 3 months before our April 2026 snapshot. Look for newer rates on the Avista site.
How much power does a typical Avista home use?
EIA-861 shows 901 kWh a month for 2024. The tariff prices that at $125.94.