HomeWattCost

Avista (Washington) rates

Avista has one residential plan modelled here. A typical Washington home using 932 kWh a month pays about $127 a month.

Investor-owned 246,055 residential customers (EIA-861, 2024) Tariffs checked September 28, 2026

Typical all-in priceSchedule 1

01234567890123456789.0123456789¢/kWh
Schedule 1$127/mo

Residential plans

PlanTypeFixed/moJuly pricesJanuary pricesJuly weekday windows
Schedule 1
Residential Service
Tiered $10.00 12.3¢ 0–800 kWh · 14.1¢ 800–1,500 kWh · 16.3¢ over 1,500 kWh 12.3¢ 0–800 kWh · 14.1¢ 800–1,500 kWh · 16.3¢ over 1,500 kWh None

Charging an EV on Avista

1,000 miles a month in a Tesla Model Y Long Range AWD (275 kWh from the wall, EPA 27.5 kWh/100 mi) at 7.2 kW, added to a typical Washington home’s use, on each plan’s cheapest start hour versus plugging in at 6 pm. Averaged over the year.

PlanBest startCharging, best startCharging from 6 pmWhole bill with EV
Schedule 1Any$39/mo$39/mo$165/mo

With an EV charged at its best hour, the cheapest plan overall is Schedule 1. Compare plans on your own usage.

How Avista’s plans work

Schedule 1 (Residential Service). In July the first 800 kWh a month cost 12.3¢ each; then 14.1¢ above 800 kWh a month, then 16.3¢ above 1,500 kWh a month. An average Washington home (856 kWh in July) goes past the first tier, so extra load such as an EV is priced higher. Fixed charge: $10.00 a month.

Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.

As a cross-check, Avista billed its residential customers an average of 11.87¢ per kWh in 2024 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for Washington’s price change since.

Sources for each plan

Plans marked “Checked” were transcribed from the utility’s current tariff and rider sheets, all charges included, and are re-checked on the date shown in each file. Other plans come from the OpenEI U.S. Utility Rate Database (CC BY 4.0) and have not yet been checked line by line against the utility’s tariff. Always confirm the current rates on your utility’s website before switching plans.

Run the numbers on Avista