How reliable is Commonwealth Edison Co?

Commonwealth Edison Co customers averaged 2.2 hours without power in 2024 (SAIDI), which is about average and better than the US average, better than the Illinois median (2.6 h), per official US EIA data.

Where does Commonwealth Edison Co rank among US electric utilities?

By official EIA SAIDI, Commonwealth Edison Co is #105 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 Commonwealth Edison Co serve?

Commonwealth Edison Co serves 25 counties across Illinois, per its EIA-861 service territory filing.

Where does Commonwealth Edison Co provide power?

Commonwealth Edison Co operates in Illinois. The full list of counties served is below, each linked to its live outage status.

Commonwealth Edison Co: Outages & Reliability

As of October 7, 2026 09:00 UTC, about 38 Commonwealth Edison Co customers are without power in 1 county.

Commonwealth Edison Co is an investor owned utility serving 25 counties in Illinois. In 2024, its customers went an average of 2.2 hours without power (SAIDI), across about 0.7 interruptions each. That ranks it #105 of 468 US utilities by reliability, where #1 is the most reliable. Its outage duration is better than the US average and better than the Illinois median (2.6 h).

SCATTERED OUTAGES · ON ITS NETWORKLive · total only

Commonwealth Edison Co customers out in 1 county

Official reliability (EIA 2024)

US EIA

2.2 hrs

SAIDI / customer / yr

0.7

SAIFI / yr

3.2 hrs

CAIDI / outage

better than the US average (US 11.0h)

Ranks #105 of 468 US utilities by reliability (#1 = most reliable) · better than the Illinois median (2.6 h).

Residential price15.2¢/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 Commonwealth Edison Co’s reliability has been worsening (lower is better).

Outage trend · Commonwealth Edison Co

38customers out · peak 1,275

Data as of Oct 7, 2026 09:00 UTC

Times in EDT. Shaded stretches had no reading.

Counties served by Commonwealth Edison Co (25)

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

What causes Commonwealth Edison Co 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 0% 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.

Commonwealth Edison Co: FAQ

How reliable is Commonwealth Edison Co?: Commonwealth Edison Co customers averaged 2.2 hours without power in 2024 (SAIDI), which is about average and better than the US average, better than the Illinois median (2.6 h), per official US EIA data.
Where does Commonwealth Edison Co rank among US electric utilities?: By official EIA SAIDI, Commonwealth Edison Co is #105 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 Commonwealth Edison Co serve?: Commonwealth Edison Co serves 25 counties across Illinois, per its EIA-861 service territory filing.
Where does Commonwealth Edison Co provide power?: Commonwealth Edison Co operates in Illinois. 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: Illinois.

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.