Electric bill calculator

How the estimate works

The calculation is a single multiplication: monthly kWh × average price per kWh. The average price is what all residential customers in your state, or of your utility, paid in total divided by the kWh they used, so it already includes fixed charges, fuel adjustments and riders, spread over an average amount of use. That makes it a good estimate for a home that uses about as much as its neighbours, and a rougher one for very small or very large users.

For states, choose between the last 12 months (September 2025 to August 2026), which reflects current prices across all seasons, and the 2025 annual average from EIA's final census. For utilities, the last 12 months are used where EIA's monthly survey covers the utility; otherwise the 2025 average.

Where to find your kWh

Your bill shows the kilowatt-hours used in the billing period, often with a 12-month history. Using your 12-month average gives a typical bill; using a summer month shows the peak. If you do not have a bill yet, the calculator fills in the average use for the state or utility you pick: the average home in the US used 874 kWh a month in 2025, with Louisiana at the top (1,225 kWh) and California at the bottom (494 kWh¹).

When your bill will differ

• Fixed charges. A monthly customer charge is the same whatever you use, so small users pay more per kWh than the average. The fixed charges guide explains it.
• Tiers and time of use. Some tariffs charge more for use above a monthly threshold or at peak hours; the rate explainer turns those charges into a total.
• Taxes. EIA's averages mostly exclude state and local taxes collected on the bill.
• Supplier price. In a retail-choice state, a supplier's price replaces the supply part of the bill; type the all-in price from your bill as your own price.