How reliable is Arizona Public Service Co?

Arizona Public Service Co customers averaged 1.5 hours without power in 2024 (SAIDI), which is about average and better than the US average, about the same as the Arizona median (1.4 h), per official US EIA data.

Where does Arizona Public Service Co rank among US electric utilities?

By official EIA SAIDI, Arizona Public Service Co is #62 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 Arizona Public Service Co serve?

Arizona Public Service Co serves 17 counties across Arizona and California, per its EIA-861 service territory filing.

Where does Arizona Public Service Co provide power?

Arizona Public Service Co operates in Arizona, California. The full list of counties served is below, each linked to its live outage status.

Arizona Public Service Co: Outages & Reliability

As of October 7, 2026 09:00 UTC, about 21 Arizona Public Service Co customers are without power in 2 counties.

Arizona Public Service Co is an investor owned utility serving 17 counties in Arizona and California. In 2024, its customers went an average of 1.5 hours without power (SAIDI), across about 0.9 interruptions each. That ranks it #62 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 Arizona median (1.4 h).

SCATTERED OUTAGES · ON ITS NETWORKLive · total only

Arizona Public Service Co customers out in 2 counties

Official reliability (EIA 2024)

US EIA

1.5 hrs

SAIDI / customer / yr

0.9

SAIFI / yr

1.6 hrs

CAIDI / outage

better than the US average (US 11.0h)

Ranks #62 of 468 US utilities by reliability (#1 = most reliable) · about the same as the Arizona median (1.4 h).

Residential price16.5¢/kWhaverage, US EIA 2024energy trends →

Reliability over time

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

Outage trend · Arizona Public Service Co

21customers out · peak 552

Data as of Oct 7, 2026 09:00 UTC

Times in EDT. Shaded stretches had no reading.

Counties served by Arizona Public Service Co (17)

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

Arizona Public Service Co: FAQ

How reliable is Arizona Public Service Co?: Arizona Public Service Co customers averaged 1.5 hours without power in 2024 (SAIDI), which is about average and better than the US average, about the same as the Arizona median (1.4 h), per official US EIA data.
Where does Arizona Public Service Co rank among US electric utilities?: By official EIA SAIDI, Arizona Public Service Co is #62 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 Arizona Public Service Co serve?: Arizona Public Service Co serves 17 counties across Arizona and California, per its EIA-861 service territory filing.
Where does Arizona Public Service Co provide power?: Arizona Public Service Co operates in Arizona, California. 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: Arizona.

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.