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How data centers reach your electric bill

Every claim linked to a primary source

Data centers - the buildings full of servers behind AI and cloud computing - are the fastest-growing new load on the U.S. electric grid. This page connects that demand to your bill, with a primary source for every claim. It restates no figures it cannot link.

1. Demand is growing after two flat decades

U.S. electricity demand was roughly flat from 2005–2020; utility five-year peak-demand forecasts have since jumped sharply, and analysts attribute much of the increase to data centers. See EIA - Today in Energy on electricity demand and the Grid Strategies National Load Growth Report. The World Resources Institute summarizes data-center demand estimates.

2. Capacity - the promise to have power available - got expensive

In the PJM grid region (13 states + DC), the capacity price jumped from $28.92/MW-day for 2024/2025 to $269.92 for 2025/2026, and has cleared at or near the price cap since - $325.00 for 2028/2029 (parsed from PJM's published auction results; full table on our capacity page). PJM's Independent Market Monitor attributes roughly 63% of total 2025/26 capacity costs to data-center load - the precise finding, with its source PDF, is in the ledger. Capacity costs flow through to customer bills.

3. Reliability regulators are warning about it

Grid reliability bodies have flagged large, fast-changing data-center loads as a new stress on the system. See the North American Electric Reliability Corporation (NERC) reliability assessments.

4. States are deciding who pays

As of May 2026, 23 states had approved at least one "large-load" tariff - long contracts with minimum payments meant to make data centers, not ordinary ratepayers, cover the grid built for them - with seven more pending. The terms differ enormously, and they are decided utility by utility in state commission dockets. Our tariff tracker documents the best-verified frameworks with thresholds, minimum-take percentages and docket numbers; the state pages carry each state's live docket story.

Every number this site states as its own - prices, bills, auction results - is parsed from BLS, EIA or PJM primary data on every build and is downloadable on the data page. Curated claims (dockets, dollar shifts) are dated and linked to their sources on the state pages, tracker and ledger.