Midwest energy default
Illinois residential electricity cost calculator
The current WattNomic default for Illinois is 17.83 cents per kWh from EIA's February 2026 monthly retail-price table. That is 0.52 cents below the state/DC average in this dataset.
Illinois residential electricity averages 17.83 cents/kWh.
At 900 kWh, Illinois's state-rate default estimates $160 before fixed fees, or $175 with a $15 fixed monthly charge. Replace defaults with your utility bill for a real decision.
Quick estimates for Illinois
- $160monthly cost at 900 kWh
- $1,926annual cost at 900 kWh/month
- $1,379estimated annual value of 7 kW solar at 85% bill offset
- #17highest residential electricity price among state/DC pages
Use this rate in tools
Start with the EIA state average, then replace it with the supply, delivery, and fixed charges from a real utility bill.
Calculator
Source: U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A (February 2026). Replace defaults with your utility bill before making a purchase decision.
How Illinois compares
Illinois ranks #17 by residential electricity price among the 51 state/DC pages in this launch set. The current simple average across these pages is 18.35 cents/kWh.