U.S. Data Center Electricity Generation by Fuel Source (2025-2035)
Stacked area chart showing the evolution of electricity generation by fuel source for U.S. data centers from 2025 to 2035.
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Source: IEA (International Energy Agency)
Key Insights
- Natural gas is the largest source of electricity for data centers, growing from 56.0 TWh in 2025 to a peak of 86.5 TWh in 2031, then declining to 72.0 TWh by 2035.
- Solar and wind show the most dramatic growth, with solar increasing from 27.0 TWh in 2025 to 205.0 TWh in 2035, and wind growing from 20.0 TWh to 115.0 TWh over the same period.
- Coal generation declines significantly, from 16.2 TWh in 2025 to 4.0 TWh in 2035, representing a 75% reduction.
- Nuclear power increases steadily, particularly after 2030 with the introduction of SMRs, growing from 17.5 TWh in 2025 to 53.0 TWh in 2035.
- By 2035, low-emissions sources (nuclear, hydro, wind, solar) account for over 50% of total data center electricity generation.