Electricity Cost Calculator by State
Use state electricity averages as a starting point, then estimate monthly cost with your actual watts and hours.
Last updated: May 2026
State averages are not your exact rate
Published state averages help with quick planning, but a calculator works best when you use the rate on your bill.
How to use this page
Find a reasonable state-average kWh rate from EIA or your utility, then plug that rate into the electricity cost calculator with the watts and hours for your device.
When to update the rate
Update your rate seasonally or whenever your utility plan changes, especially before estimating heaters, air conditioners, pool pumps, or EV charging.
Sources
Source boxes list references used for factual claims, safety notes, energy rates, product-sizing conventions, or official data points.