U.S. Electricity: Generation, Capacity, and Sales
How power is produced, kept available, and delivered to customers in 2025.
United States
U.S. electricity flows through a changing system
Generation, available capacity, and retail sales show different parts of the power system.
Generation mix
Three source groups supply the grid
Fossil fuels
Natural gas, coal, and petroleum generate power through combustion-based technologies.
[eia-1]Nuclear energy
Nuclear fission produces heat for steam turbines that generate electricity.
[eia-1]Renewable energy
Wind, water, sunlight, biomass, and geothermal heat use distinct conversion technologies.
[eia-1]
Available power
Capacity measures potential, not annual output
The United States had 1,280,799 MW of utility-scale generating capacity at the end of 2025.
Grid operators call on generators as demand changes; plants do not run at full capacity every hour. Capacity shows what the system can supply under specified conditions.
[eia-2]Portfolio shift
Wind and solar now shape generator operations
Wind and solar represented 17% of utility-scale generating capacity, up from 4% in 2010.
Their output depends on available wind and sunlight. Implication: flexible generators increasingly adjust output to balance the grid.
[eia-2]Customer demand
Retail sales capture most electricity consumption
U.S. retail electricity sales reached about 4,058 billion kWh in 2025.
Sales are lower than generation because transmission and distribution lose energy as heat, while some customers generate electricity for direct use.
[eia-2]Sources
Evidence behind this story
Sources are inserted by Stanza from trusted records.