The US Energy Index blends the four prices a household actually pays for energy — gasoline at the pump, electricity at the meter, piped gas and heating oil — into a single monthly figure, weighted by what households actually spend on each. Rules-based, computed from public BLS price data, base 2000 = 100. The figure, the weights, the source, the month. You draw the conclusion.
575 months · sources: US Bureau of Labor Statistics, Average Price Data (US city average) (prices), US Bureau of Labor Statistics, Consumer Expenditure Surveys, 2024 (weights) · ↓ full history (CSV) · methodology v1.0
US Energy Index, 264.5 (September 2026, 2000=100). Clay Indices, usenergyindex.com.| Component | Price | MoM | YoY | Weight | Source | Month |
|---|---|---|---|---|---|---|
| Gasoline | $4.482 $/gal | +6.7% | +34.2% | 49.6% | US Bureau of Labor Statistics | September 2026 |
| Electricity | $0.196 $/kWh | +0.0% | +4.3% | 37.7% | US Bureau of Labor Statistics | September 2026 |
| Natural gas | $1.700 $/therm | −0.8% | +5.4% | 10.1% | US Bureau of Labor Statistics | September 2026 |
| Heating oil | $5.922 $/gal | +15.1% | +64.9% | 2.6% | US Bureau of Labor Statistics | September 2026 |
Weights are the 2024 Consumer Expenditure Survey annual dollars per household, normalized. The weight is what makes the blend honest: gasoline moves the index almost twice as hard as electricity because households spend almost twice as much on it.
$4.482 $/gal in September 2026, +34.2% on the year. Average retail price of one gallon of unleaded regular gasoline, US city average, including taxes.
$0.196 $/kWh in September 2026, +4.3% on the year. Average residential price of one kilowatt-hour of electricity, US city average, including taxes and fuel adjustments.
$1.700 $/therm in September 2026, +5.4% on the year. Average residential price of one therm of utility (piped) natural gas, US city average, including taxes.
$5.922 $/gal in September 2026, +64.9% on the year. Average residential price of one gallon of No.
A page per state: the latest prices by category and the price of each fuel per million Btu since 1980, from the EIA's State Energy Data System.
What a kilowatt-hour costs at home in every state, July 2026 against July 2025, from the EIA's monthly utility census. The national average hides a three-to-one spread.