In 2025, total U.S. utility-scale electricity net generation reached approximately 4,429 billion kWh (4.43 trillion kWh), according to the U.S. Energy Information Administration (EIA).
Based on the preliminary 2025 generation shares and total utility-scale output of ~4,429 billion kWh (plus estimated generation shares), the breakdown by electricity source is as follows:
Natural Gas: ~1,807 billion kWh (~40.8% share)
Nuclear: ~784 billion kWh (~17.7% share)
Coal: ~735 billion kWh (~16.6% share)
Wind: ~487 billion kWh (~11.0% share)
Solar: ~310 billion kWh (~7.0% share) (Note: Small-scale solar PV added roughly another 93 billion kWh on top of utility-scale totals).
So approximately 42.7% of electricity production in the US was carbon neutral in the US in 2025 with nuclear energy as the largest source of carbon neutral electricity production.
"The knowledge that we have now is but a fraction of the knowledge we must get, whether for peaceful use or for national defense. We must depend on intensive research to acquire the further knowledge we need ... These are truths that every scientist knows. They are truths that the American people need to understand." (Harry S. Truman 1948).
"The greatest long-term threat to U.S. national security is not terrorists wielding a nuclear or biological weapon, but the erosion of America's place as a world leader in science and technology."
Gordon England: 1st Deputy Secretary of Homeland Security and former Secretary of the Navy