THE COST OF WHEN

A year of electricity,
hour by hour.

Explore ComEd-zone energy prices. Find the seasonal shifts
and the hours that make a difference.

DATA WINDOW · CHICAGO TIMELoading data…Reading hourly observations
Annual average
—¢/kWh

Across all recorded hours

Lowest-average month
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Highest-average month
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Negative-price hours
—hours

Hours with energy prices below zero

01 / THE BIG PICTURE

Average price by month

One average for every month. Select a bar to explore its daily pattern.

¢ / kWh
Price · ¢/kWh

02 / FIND YOUR HOURS

The shape of a day

Each point averages the same hour across all days in the selected month.

Price · ¢/kWh
—Average price · ¢/kWh
View hourly averages as a table
Selected month hourly averages
Hour beginning (Chicago)Average (¢/kWh)Observations

Loading optional weather overlays…

Representative Chicago point (41.8781, −87.6298), not a zone-wide average. Historical modeled weather from Open-Meteo / Copernicus ERA5, CC BY 4.0. Sun means shortwave solar irradiance, not solar-panel output. All averages include nighttime zeros and follow Chicago daylight-saving time.

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