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Official data · U.S. Energy Information Administration, Form EIA-861 · 2024 data · Synced

Commonwealth Edison Co · Illinois

Investor-owned utility · EIA utility no. 4110 · 3,727,675 residential customers reported

In 2024, Commonwealth Edison Co's Illinois customers averaged 0.7 outages and 132 minutes without power, and paid about $82 a month for electricity (13.4¢/kWh). These are Commonwealth Edison Co's own filings to EIA, under the IEEE reliability standard, including major storm days.

Outages / yr (SAIFI)
0.7
Time out / yr (SAIDI)
132 min
Avg residential bill / mo
$82
Price / kWh
13.4 ¢

Outage history

Minutes without power per customer · storm days shown separately
Commonwealth Edison Co annual outage history in Illinois: minutes without power per customer with and without major storm days, and outages per year, by year, from EIA.
Year With storm days Without storm days Outages / yr Relative duration
2024 132 36 0.7
2023 93 35 0.6
2022 66 38 0.6
2021 102 43 0.8
2020 341 40 0.8
2019 88 51 0.8
2018 120 58 0.8
2017 95 55 0.8
2016 97 63 0.9
2015 109 72 1.0
Storm-heavy years look worse with major storm days included; with them removed, the underlying year is comparable. We always show both so a single storm season is not mistaken for a trend. What is a Major Event Day?

About these numbers

Source
U.S. Energy Information Administration, Annual Electric Power Industry Report (Form EIA-861), 2024 data. The monthly bill and price per kWh are computed by CheckedHome from EIA residential revenue and sales. View the source. Synced from EIA on .
Self-reported
Utilities report these figures to EIA themselves; EIA does not audit every submission, and outages from recent months appear only in the next annual release.
Major storm days
Outage figures can be shown with or without Major Event Days (severe storms). We show both on utility pages and never cherry-pick.
A correction?
We republish the official record verbatim. If a figure looks wrong, see Corrections; we re-check it against EIA.
Reporting standard
Commonwealth Edison Co reports under the IEEE 1366 method. The standard used is shown so figures are not mixed silently.
Counties served
Boone, Bureau, Carroll, Cook, DeKalb, DuPage, and 18 more.

We show EIA values as published, reformatting only for a consistent house style. How we display these figures.