How to read it
Each fuel share uses total generation as its denominator. The spread equals the natural-gas share minus the coal share.
Benchmark · daily · %
U.S. electricity generation mix
How is U.S. electricity generation split across major fuels?
U.S. electricity generation mix tracks seven-day generation shares using the all-fuel denominator. It uses daily data.
U.S. electricity generation mix tracks seven-day generation shares using the all-fuel denominator. It uses daily data.
- Natural gas
- 43.1%
- Coal
- 17.2%
- Gas–coal spread
- +25.9 pp
- 20-business-day change
- −1.9 pp
- from +27.8 pp
- Historical percentile
- 88th
- of 2814 readings · since 2019-01-07
U.S. electricity generation mix
Natural gas
Coal
Nuclear
Wind + solar
| Series | First | Latest | Min | Max |
|---|---|---|---|---|
| Natural gas | 31.33 | 43.07 | 24.40 | 48.48 |
| Coal | 25.18 | 17.16 | 9.14 | 30.41 |
| Nuclear | 24.40 | 16.96 | 6.90 | 25.08 |
| Wind + solar | 8.76 | 16.97 | 5.35 | 26.64 |
How this is calculated
Seven-day generation shares using the all-fuel denominatorPIER20 calculates this benchmark from official observations from the U.S. Energy Information Administration (EIA). The formula is seven-day generation shares using the all-fuel denominator. The source table lists each selector and source link.
The latest data is from 20 Sep 2026. The latest reading is 43.07%. The Natural gas line is down 1.6 pp over the past year. It is above its long-run median of 38.67%.
How to read it
How this benchmark is used
Why traders watch it
Energy traders use this benchmark to track shifts in the U.S. power generation mix.
Frequently asked questions
4 answersWhat is the latest reading for U.S. electricity generation mix?
The latest data is from 20 Sep 2026. The latest reading is 43.07%. The Natural gas line is down 1.6 pp over the past year. It is above its long-run median of 38.67%.
How often does this benchmark update?
The source publishes daily data. PIER20 updates the page after each new observation. The chart shows the data date and fetch date.
What data sources does this chart use?
The U.S. Energy Information Administration (EIA) publishes the data. The methodology section lists each source series.
Where does the data come from?
The U.S. Energy Information Administration (EIA) publishes the source data. The source table lists each series and its exact link.