Who supplies and pays for data centers’ electricity?
Economics & Business
Last updated
The big picture
Data centers need large amounts of electricity to run computing equipment and cooling systems. As AI expands, new facilities can add demand faster than utilities and grid operators can arrange new supply and transmission. PJM, a major U.S. grid operator, is developing a registry of large electricity users to improve planning. Regulators have also examined whether some new facilities should be first to reduce consumption during shortages. These questions affect more than technology companies: households and local businesses want to know whether they will help pay for infrastructure or face higher bills. A promise that a developer will cover its costs needs to be translated into enforceable rules and practical grid arrangements.
Where things stand
Federal regulators approved PJM’s large-load registry in October but rejected its proposed curtailment approach. The registry does not itself guarantee a new data center access to power. Reliability rules and cost allocation remain unsettled, while communities continue challenging claims that expansion will leave other electricity customers unaffected.
Key facts
- PJM’s large-load category includes users beyond data centers.
- Registering demand is different from building enough generation to serve it.
- A rejected curtailment proposal does not mean the underlying capacity problem has disappeared.
How we got here
A federal conference examines PJM governance and stakeholder reforms.
Regulators approve the registry but reject the proposed curtailment plan.
Reporting examines community concerns over data-center costs and electricity bills.
What happens next
No further event was confirmed at the last update.
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