How reliable is Avista Corp?

Avista Corp customers averaged 3.1 hours without power in 2024 (SAIDI), which is below average and better than the US average, about the same as the Idaho median (3.4 h), per official US EIA data.

Where does Avista Corp rank among US electric utilities?

By official EIA SAIDI, Avista Corp is #160 of 468 US utilities by reliability that report reliability and serve at least three counties, #1 being the most reliable. Overall it is better than the US average.

How many customers does Avista Corp serve?

Avista Corp serves 19 counties across 3 states, per its EIA-861 service territory filing.

Where does Avista Corp provide power?

Avista Corp operates in Idaho, Montana, Washington. The full list of counties served is below, each linked to its live outage status.

Avista Corp: Outages & Reliability

As of October 7, 2026 09:00 UTC, no major outages are reported on Avista Corp's network.

Avista Corp is an investor owned utility serving 19 counties in 3 states. In 2024, its customers went an average of 3.1 hours without power (SAIDI), across about 1.1 interruptions each. That ranks it #160 of 468 US utilities by reliability, where #1 is the most reliable. Its outage duration is better than the US average and about the same as the Idaho median (3.4 h).

LIVE ON ITS NETWORKLive · total only

No major outages currently reported on Avista Corp's network.

Official reliability (EIA 2024)

US EIA

3.1 hrs

SAIDI / customer / yr

1.1

SAIFI / yr

2.8 hrs

CAIDI / outage

better than the US average (US 11.0h)

Ranks #160 of 468 US utilities by reliability (#1 = most reliable) · about the same as the Idaho median (3.4 h).

Residential price11.8¢/kWhaverage, US EIA 2024energy trends →

Report an outageOfficial outage map ↗

Reliability over time

Official EIA SAIDI, hours without power per customer per year (IEEE, incl. major events). Over this period Avista Corp’s reliability has been improving (lower is better).

Outage trend · Avista Corp

0customers out · peak 106

Data as of Oct 7, 2026 09:00 UTC

Times in EDT. Shaded stretches had no reading.

Counties served by Avista Corp (19)

Service territory reported to EIA-861; each links to live outage status and history.

What causes Avista Corp outages

Share of outage-time by reported cause across the counties it serves (territory-wide, may include other utilities in shared counties).

A reported cause is available for 5.1% of outage-time over 2 months of live data. Shares are of the portion with a known cause; bars are scaled to the largest cause.

Avista Corp: FAQ

How reliable is Avista Corp?: Avista Corp customers averaged 3.1 hours without power in 2024 (SAIDI), which is below average and better than the US average, about the same as the Idaho median (3.4 h), per official US EIA data.
Where does Avista Corp rank among US electric utilities?: By official EIA SAIDI, Avista Corp is #160 of 468 US utilities by reliability that report reliability and serve at least three counties, #1 being the most reliable. Overall it is better than the US average.
How many customers does Avista Corp serve?: Avista Corp serves 19 counties across 3 states, per its EIA-861 service territory filing.
Where does Avista Corp provide power?: Avista Corp operates in Idaho, Montana, Washington. The full list of counties served is below, each linked to its live outage status.

Reliability metrics (SAIDI/SAIFI) and service territory from the US EIA Form 861. SAIDI/SAIFI are IEEE-standard, including major event days. Primary state: Idaho.

Data from EIA Form 861 (utility reliability) and DOE/ORNL ODIN, every source we read. Live data as of October 7, 2026 09:00 UTC.