Data Center Power Demand
Updated September 9, 2026. Data centers have become one of the largest sources of projected U.S. electricity growth. The hard part is separating projects that will actually connect from speculative requests, then deciding who builds the power and who carries the risk.
This page tracks the numbers, rules and projects reshaping the grid. It is maintained from The Daily Mine's weekday reporting and links to the editions documenting each development.
Why the forecasts vary so widely
A request for power is not the same as a finished data center. Developers may seek service from several utilities, change locations or reserve more capacity than they ultimately use. Utilities and grid operators are responding with deposits, collateral requirements and stricter screening.
Exelon cut its high-probability data-center pipeline from 18 GW to about 11 GW after applying tougher commitment standards. Only 4 GW was backed by signed agreements and $1 billion in collateral.
Texas offers an even larger example. Projects in ERCOT's paused review batch represented about 200 GW, more than twice the state's demand record, while ERCOT expected roughly 65 GW to receive at least some power by 2032.
How grid operators are changing the rules
Grid operators are moving away from treating every large-load request as equally firm. PJM has proposed letting data centers bring their own capacity while making unsupported demand the first to be curtailed during emergencies. Its planning cases include as much as 70 GW of new large-load demand by 2038.
NERC is developing mandatory standards for sudden data-center load losses. A large campus dropping off the system at once can create a reliability problem just as surely as unexpected demand.
Who pays for new infrastructure
The central rate question is whether a large customer covers only its direct connection or also the generation and transmission expansion built around it. New tariffs increasingly require longer contracts, upfront study payments, collateral, exit fees and protection for other customers if a project arrives late or disappears.
TVA created a separate data-center rate class for loads above 5 MW, including a capacity charge tied to each new megawatt. In Virginia, regulators ordered Dominion to shift more transmission costs to the large loads driving expansion.
Grid power or private generation
Some developers are trying to bypass slow interconnection queues with on-site gas, nuclear agreements, microgrids or other behind-the-meter supply. That can accelerate a project, but it shifts the debate toward emissions, water use, fuel supply and whether private generation should escape the reliability rules applied to grid-connected loads.
Texas paused reviews for new data-center grid connections while leaving projects with their own power outside the freeze.
What to watch
- How much proposed load survives deposits, collateral and construction milestones
- Whether large-load tariffs protect households when projects are delayed or canceled
- How quickly turbines, transformers and transmission can be delivered
- Whether on-site generation becomes the normal path around grid queues
- How curtailment rules handle both sudden demand and sudden load loss
The Daily Mine updates this guide as forecasts, tariffs and major projects change.