Energy Calculators

Illinois electric bill calculator

Estimate a monthly electricity bill in Illinois from your usage and the state’s average residential price.

A Illinois household using the state average of 716 kWh a month (2025) would pay about $138.33 a month at the August 2026 average price of 19.32¢/kWh (EIA).

Pre-fills the average price (Aug 2026) and typical use (EIA).

kWh

Average for Illinois: 716 kWh/month (2025, EIA). Your bill shows your actual use.

¢/kWh
Estimated monthly bill
$138.33
Per year
$1,660
Monthly bill at 19.32¢/kWh
Monthly useBill
500 kWh$96.60
750 kWh$144.90
1,000 kWh$193.20
1,500 kWh$289.80
2,000 kWh$386.40

Formula: monthly bill = kWh used × average price per kWh. EIA’s average price already includes fixed monthly charges, spread over all kWh.

Inputs used: use: 716 kWh/month; rate: 19.32¢/kWh; state: Illinois.

These are estimates, not financial advice.

Source: U.S. Energy Information Administration (Aug 2026). About our data

Typical monthly bill
$138.33716 kWh × 19.32¢/kWh
vs U.S. typical bill
−12.8%U.S.: $158.72
Rank (1 = highest bill)
38thof 51

Illinois bills at common usage levels

Monthly useBill at 19.32¢/kWh
500 kWh$96.60
750 kWh$144.90
1,000 kWh$193.20
1,500 kWh$289.80
2,000 kWh$386.40

Average monthly bill over the last 12 months

Illinois average residential electric bill per customer by monthIllinois average bill: $124 in Sep 2025, $171 in Aug 2026. Low $105, high $193.$100$125$150$175$200Nov 2025Feb 2026May 2026Aug 2026
· dollars per customer per month
Show data table
MonthIllinois average bill
Aug 2026$171
Jul 2026$193
Jun 2026$143
May 2026$123
Apr 2026$110
Mar 2026$115
Feb 2026$128
Jan 2026$133
Dec 2025$130
Nov 2025$105
Oct 2025$107
Sep 2025$124

Source: U.S. Energy Information Administration (Aug 2026). About our data

States with similar typical bills

How we calculate

bill = kWh × average price per kWh. Typical use is Illinois’s 2025 residential sales divided by residential customers and 12 months. The monthly chart uses each month’s sales per customer × that month’s price.

See the methodology for details.

Frequently asked questions

What is the average electric bill in Illinois?

About $138.33 a month for a household using the Illinois average of 716 kWh (2025) at the August 2026 price of 19.32¢/kWh. That is −12.8% versus the U.S. figure calculated the same way ($158.72).

When are Illinois electric bills highest?

Over the last 12 months with published data, the average residential bill was highest in July 2026 ($193.10) and lowest in November 2025 ($104.56), based on EIA sales, customers and prices.

Does this include fixed charges and taxes?

EIA’s average price is total residential revenue divided by kWh sold, so fixed customer charges are included, spread over all kWh. Taxes and fees collected on behalf of governments may not be fully included, so actual bills can be somewhat higher.

Data last updated: