Idaho · Investor Owned · serves 201 ZIP codes
Avista Corp rate plans
5 residential plans are currently open to new customers. None of them price by hour, so shifting when you use power won’t change your bill here.
What does Avista cost at a normal month’s usage?
A household using 1,000 kWh a month pays about $1,684 a year on the cheapest of the 1 plans we can price here — 1 Residential Service — and $1,684 on the priciest. Same house, same wires.
| A month of | Cheapest, a year | On which plan | Priciest |
|---|---|---|---|
| 500 kWh | $880 | 1 Residential Service | $880 |
| 1,000 kWh | $1,684 | 1 Residential Service | $1,684 |
| 2,000 kWh | $3,554 | 1 Residential Service | $3,554 |
The same plan is cheapest at every level of use here, so the answer does not turn on how much you use. Estimates from the filed tariff, priced hour by hour on a household with central air — not a quote.
What does Avista Corp's residential rate cost?
Avista Corp files a single residential tariff, so there is no plan to choose between — everyone served here is on the same terms. That makes this page short on comparison and long on one question instead: what does that tariff actually do to a bill?
Priced hour by hour across a full year, a small apartment on this tariff comes to about $736 and a three-bedroom house with central air to about $1,332 — an effective 15.1¢ and 14.1¢ per kilowatt-hour once the fixed charge is spread across everything used.
With one plan and no hourly pricing, the only lever left is using less. Moving laundry or car charging to the middle of the night changes nothing here, which is worth knowing before you rearrange your evenings for no reason.
Expect the bill to swing with the weather rather than with anything you decide: the same house costs around $155 in July and $86 in February. Budget against the higher figure and the summer bill stops being a surprise.
How Avista compares across Idaho
Run the same three-bedroom house with central air through its default plan at each of the 2 Idaho utilities we cover, and Avista is the cheapest of the lot at about $1,332 a year; the state median is $1,523. The dearest, Idaho Power, charges $1,715 for identical use — a gap set by the address, not by anything either household did.
The other two households tell the same story in different sizes: a small apartment pays about $736 here against a state median of $846, and the same house with an electric car charging overnight about $1,842 against $2,089. Effective rate, fixed charge included, is 14.1¢ per kilowatt-hour for the family home.
Every Idaho utility we cover, priced for the same three households →
Which plan would cost you least?
No bill upload, no sign-up. Tell us roughly what a month costs you and what runs on electricity — we price every plan against the same household and show you the gap.
That adds up to 11,993 kWh a year. Compare it to the total on your bill and adjust until it’s close.
Same usage, different plan
$10,253a year
That is the gap between the cheapest plan you could be on — 1 Residential Service — and the priciest. Not by using less power. By being billed differently for the same power.
| Plan | Per year | Vs best |
|---|---|---|
| 1 Residential ServiceOne rate, every hour of the year. | $1,680 | — |
| 12 Residential and Farm General Service - Three PhaseOne rate, every hour of the year. | $2,132 | +$452 |
| 12 Residential and Farm General ServiceOne rate, every hour of the year. | $2,132 | +$452 |
| 22 Residential and Farm Large General Service - SecondaryOne rate, every hour of the year. | $11,907 | +$10,227 |
| 22 Residential and Farm Large General Service - PrimaryOne rate, every hour of the year. | $11,933 | +$10,253 |
An estimate, not a quote. Supply charges move month to month, and your real usage pattern is not exactly this one. What it does show reliably is the gap between plans — both are priced off the same assumptions.
Making sense of the bill
- How to read your electric bill
Four kinds of charge, only two of which you can do anything about.
- Fixed charges on your electric bill: what they are and why they matter
The line that makes cents-per-kilowatt-hour comparisons quietly wrong.
- How to compare electricity plans without getting it wrong
Six things that break a comparison, and the order to check them in.
Every plan, in detail
Hour-by-hour schedules, tier thresholds, and the tariff each one comes from.
- 1 Residential Serviceflat
One rate, every hour of the year.
12.7–16.7¢ - 12 Residential and Farm General Servicedemand charge
One rate, every hour of the year.
11.1–14.8¢ - 12 Residential and Farm General Service - Three Phasedemand charge
One rate, every hour of the year.
11.1–14.8¢ - 22 Residential and Farm Large General Service - Primarydemand charge
One rate, every hour of the year.
8.6–9.5¢ - 22 Residential and Farm Large General Service - Secondarydemand charge
One rate, every hour of the year.
8.3–9.2¢