192 TWh
US data center electricity use, 2024 (the last measured year)
About 4.7% of all US electricity
Lawrence Berkeley National Laboratory (source 1), as of June 2026
The official federal count, published June 2026. Both sides accept it. Excludes cryptocurrency mining. The next measured year (2025) will not be published until 2027.
About 234 TWh
2025 estimate (Berkeley Lab, same series as the 2024 figure)
The lab's Reference Case has use rising 22% from 2024 to 2025. Applied to 192 TWh that is roughly 234 TWh, or about 5.6% of US electricity
Lawrence Berkeley National Laboratory, 2025 Update (source 1), as of June 2026
An estimate, not a measurement. The report states the growth rate in its conclusion and shows the yearly values only in a chart, so the 234 figure is derived. Its own stress test puts the range at roughly 20% below to 30% above.
312.6 TWh
2025 estimate (Energy Institute Statistical Review, S&P Global Energy data)
Up 25.5% from 249.0 TWh in 2024. About 39.7% of a world total of 787.8 TWh; China 205.7 TWh, Europe 144.6 TWh
Energy Institute Statistical Review of World Energy 2026 (as reported by Forbes, August 23, 2026), as of July 2026
A different scorekeeper with a broader count: it puts 2024 at 249 TWh where Berkeley Lab puts it at 192 TWh. Both are defensible; they define and model data centers differently. Never mix the two series in one sentence.
History (2 points)
- 2025: 312.6 TWh
- 2024: 249.0 TWh
485 TWh
World data center electricity use, 2025 (IEA)
Up more than 15% from about 415 TWh in 2024, roughly 1.5% of world electricity. AI-focused data centers grew about 50%. The IEA puts the US at about half of world capacity
IEA, Key Questions on Energy and AI (2026), as of 2026
The IEA's world total (485 TWh) is far below the Energy Institute's (787.8 TWh) for the same year. Same lesson: check which series a number comes from before comparing.
History (2 points)
- 2024: About 415 TWh
- 2025: 485 TWh
About 302 TWh
2026 forecast (Berkeley Lab)
Reference Case growth of 29% from 2025 to 2026, applied to the 234 TWh 2025 estimate. Roughly 7% of US electricity
Lawrence Berkeley National Laboratory, 2025 Update (source 1), as of June 2026
A forecast. Nobody will have a measured 2026 national figure until 2028.
+3.3% commercial electricity sales
2026 year to date: the closest measured number
738.7 TWh sold to commercial customers January through June 2026, versus 715.0 TWh in the same months of 2025, an extra 23.7 TWh. Total US sales were up 1.2%. EIA names data center development as the main driver of commercial growth
EIA Electric Power Monthly, Table 5.1 (data through June 2026), as of June 2026
No agency meters data centers month by month, so there is no true year-to-date data center figure. Commercial sales include offices, stores, hospitals and everything else, so treat the extra 23.7 TWh as an upper bound on data center growth so far this year. The daily update refreshes this as each monthly release lands.
649 TWh
Best estimate for 2030 (Berkeley Lab)
Range 578 to 782 TWh, or 9.5% to 15.3% of US electricity
Lawrence Berkeley National Laboratory (source 1), as of June 2026
The authors publish a range on purpose. Do not quote the middle figure as a prediction.