What do Illinois utilities charge before you use any power?
3 Illinois utilities, 15 plans, 92% of homes covered. The middle utility bills $16.00 monthly, $192 over twelve months, whatever the meter reads. At 17.69 cents a kWh that buys 90 kWh, about 14% of a 654 kWh bill. Rank 17 of 24, $2.50 under the $18.50 all-state figure.
Illinois: fixed charge by utility
| Commonwealth Edison Co | investor-owned | 3,727,675 | 8 | $18.08 | $15.69 to $21.66 | 2025-02-03 |
|---|---|---|---|---|---|---|
| Ameren Illinois Company | investor-owned | 1,060,894 | 6 | $14.01 | $14.01 | 2026-03-31 |
| City of Naperville | municipal | 56,117 | 1 | $16.00 | $16.00 | 2022-05-13 |
Illinois utility medians
Medians are tight: $14.01 to $18.08. Commonwealth Edison Co, the biggest at 3,727,675 homes, bills $18.08, $2.08 over the state median. Weighted by homes: $18.08 (+$2.08). Commonwealth Edison Co alone spans $15.69 to $21.66 over 8 plans.
What $16.00 a month means in Illinois
$16.00 at 17.69 cents is 90 kWh, 14% of a typical 654 kWh month.
Per kWh: 2.4 cents at 654 kWh, 4.9 cents at 327 kWh.
Where Illinois sits among states
Ohio is 15th at $16.49, $0.49 over Illinois. Missouri is 16th at $16.31, $0.31 over Illinois. Connecticut is 18th at $13.02, $2.98 under Illinois. Pennsylvania is 19th at $13.00, $3.00 under Illinois.
Illinois beside 4 neighbors
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More
Nearest medians: Missouri $16.31, Ohio $16.49, California $18.00, Nevada $18.50
Sources
Illinois plan edits run 2022-05-13 to 2026-03-31; hub page: file dates and checksums.
Questions
How much is the fixed charge for Illinois electricity customers?
$16.00 a month at the median of 3 utilities ($14.01 to $18.08); $18.08 when weighted by homes.
Which Illinois utility has the highest fixed charge?
Commonwealth Edison Co, with a median of $18.08 a month across 8 plans.
Can I avoid the fixed charge in Illinois?
Not by using less: the cheapest Illinois plan read lists $14.01 and the dearest $21.66, each billed at zero use.
How recent is this Illinois data?
Illinois plan edits date from 2022-05-13 to 2026-03-31; a rate case can move a charge after that, so read your own tariff.