kWh Index

What does it cost to run?

Not what it says on the box — what it costs, at the price of energy where you live, this month. Electricity averaged 18.34¢ per kilowatt-hour across the United States in June 2026, and every figure on this site is that number multiplied by a published rating.

What a kilowatt-hour costs

Every state, monthly, plus 1,414 utilities with their derived rates, service territory and outage records.

Texas plans

929 retail offers priced at what you actually use, with the 50 bill-credit plans flagged.

Heat pumps

Which hold their capacity at 5 °F, and what each costs per million BTU in your state.

Water heaters

Rated annual kilowatt-hours, turned into dollars a year at your rate.

Solar & batteries

Modules by PTC watts — the realistic rating, not the nameplate one — plus inverters and storage.

Charging at home

What it costs to drive 100 miles on your own electricity, by car and by state.

Where power is dearest and cheapest, June 2026

Highest

Lowest

Everything we publish

45,888 models across 10 categories, all priced.

Your state

AK · AL · AR · AZ · CA · CO · CT · DC · DE · FL · GA · HI · IA · ID · IL · IN · KS · KY · LA · MA · MD · ME · MI · MN · MO · MS · MT · NC · ND · NE · NH · NJ · NM · NV · NY · OH · OK · OR · PA · RI · SC · SD · TN · TX · UT · VA · VT · WA · WI · WV · WY

Get told when this changes

A short note each month when EIA publishes new prices and every figure here moves.

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Prices from the U.S. Energy Information Administration; ratings from ENERGY STAR (U.S. EPA), the California Energy Commission and fueleconomy.gov; Texas listings from the Public Utility Commission of Texas. How it is put together.