National Grid / Niagara Mohawk (New York)
Large-load tariff for data centers: what is on file, the terms the filings state, and where each fact comes from. Terms a filing does not state are marked, never guessed.
StatusLaw or process only Last reviewed 2026-10-12
Applies atNo statewide threshold filed yet -- PSC Case 26-E-0045 is reviewing what one should be
What the filing saysNational Grid / Niagara Mohawk (New York) -- under PSC review, no large-load tariff yet: PSC Case 26-E-0045 ("Energize NY Development," instituted Feb 12, 2026) is reviewing interconnection processes, cost-allocation mechanisms, and tariff structures for integrating large loads, including data centers, onto NY's grid. As of this research: still in the stakeholder-comment/technical-conference stage (DPS staff to produce a white paper for PSC consideration) -- no utility-specific large-load tariff has been filed or approved under this proceeding yet. Real scale cited in the Governor's announcement: as of January 2026, NYISO's interconnection queue held 48 large-load projects totaling over 11 GW (see lib/nyiso-queue.ts for the live project-level detail behind that figure).
Stated terms
This tariff does not yet have terms we can tabulate. The status text above is what the filings and our source state. See the source below.
Source
Governor Hochul press release, Feb 12, 2026 (governor.ny.gov); contemporaneous legal-alert coverage (akingump.com, btw.media) confirming Case 26-E-0045 and its still-pending status.
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Screening information from public filings, not legal or investment advice. Tariffs change; confirm the current terms with the utility and the commission before relying on them.