Electricity Bill Estimator in Illinois
Estimate household-profile electricity bills in Illinois using fixed monthly kWh assumptions and the statewide residential rate. These pages are for scenario planning and complement the benchmark average-bill and calculator pages.
Key metrics
| Metric | Value |
|---|---|
| Illinois average rate | 23.85 ¢/kWh |
| Benchmark monthly bill (900 kWh) | $214.65 |
| Benchmark annual bill | $2575.80 |
| U.S. benchmark monthly bill | $165.96 |
Illinois benchmark vs U.S. benchmark
Illinois's typical residential bill estimate is higher than the U.S. average by $48.69 per month (29.3%).
Household profile scenarios
This state page is the main bill estimator entry for Illinois. Linked profile pages are available only where we currently publish them (4 active for this state).
Across the site we currently publish 204 profile scenario pages in 51 states; other combinations are not linked yet.
Profile pages for Illinois: Apartment · Small Home · Medium Home · Large Home.
| Profile | Monthly usage | Monthly estimate | Annual estimate | Profile scenario |
|---|---|---|---|---|
| Apartment | 650 kWh | $160.32 | $1923.87 | Apartment scenario page |
| Small Home | 900 kWh | $214.65 | $2575.80 | Small Home scenario page |
| Medium Home | 1,200 kWh | $279.84 | $3358.12 | Medium Home scenario page |
| Large Home | 1,600 kWh | $366.77 | $4401.21 | Large Home scenario page |
Estimates are modeled as two-part bills: ComEd's $19.07 fixed monthly charge plus a per-kWh remainder anchored to the EIA all-in average rate, so the 900 kWh benchmark is matched exactly while lower and higher usage track how bills are actually charged. See what's inside Illinois's rate.
Related tools and pages
- Illinois electricity rates (the state overview this estimate is priced from).
- Average bill benchmark in Illinois (single standard usage baseline).
- Electricity cost calculator in Illinois (custom kWh and bill math).
- 1,000 kWh fixed usage cost in Illinois (fixed monthly kWh example).
- Appliance operating cost pages in Illinois (hourly and monthly appliance examples).
- Energy comparison hub (organized comparison entry points).
- Offers and savings in Illinois (shopping and promotions).
- Electricity providers in Illinois (who sells power in your area).
Appliances and comparisons
Know when Illinois rates change
Illinois rates move with each monthly EIA update. Get an email when 900 kWh in Illinois gets cheaper — or more expensive.
See your exact bill in Illinois
Set your own usage to match your home — fees included. Then compare the retail plans available in Illinois.
Frequently asked questions
How does the electricity bill estimator work for Illinois?
The estimator multiplies each profile's monthly kWh assumption by the state average residential electricity rate and shows all-in-rate monthly and annual amounts.
Is this the same as the average bill page for Illinois?
No. This section covers profile-based scenarios, while the average bill page uses one standard household usage baseline for a quick benchmark.
Where can I compare appliance-specific operating cost estimates?
See the Illinois appliance cost pages, like the refrigerator and central AC cost-to-run estimates.
State cost and bill pathways for Illinois
- Illinois electricity price per kWh — What a kWh of electricity costs in Illinois
- Illinois electricity rates & prices — Core authority page with statewide pricing context
Historical and trend pages
- Illinois electricity price history — Historical context and trend interpretation
- Electricity inflation in Illinois — State electricity inflation analysis
Fixed-usage and calculator pathways
- 800 kWh cost in Illinois — Cost for this usage amount in the same state
- Electricity cost for 1,000 kWh in Illinois — Cost for this usage amount in the same state
Appliance and estimator pathways
- Refrigerator cost in Illinois — Appliance operating-cost page for this state
- Refrigerator calculator in Illinois — Calculator page for adjusting wattage and usage for this appliance
State comparison pathways for Illinois
- Illinois electricity comparisons — State-to-state comparison hub
- Illinois vs California electricity cost — Head-to-head comparison page
Discovery and navigation hubs
- Illinois electricity hub — Guide to this state's electricity rate, usage, comparison, and tool pages
- Electricity cost scenario hub — Entry point for residential and industry scenario pages
Consumer electricity drivers
- Price drivers in Illinois — Understand what influences state electricity prices
Source & Method
Source: U.S. Energy Information Administration (EIA) Retail Sales of Electricity. Updated: May 2026. Estimates use the EIA all-in average residential rate — energy, delivery, fixed charges, and utility fees together, not just the electricity itself. Fees are inside the rate, not an extra on top; how your own bill splits fixed versus per-kWh charges varies by utility. For what's inside the all-in rate, see hidden electricity fees; for how rates and estimates are defined, see the methodology hub.