FACILITY PROFILE · NY

ZeroC / Petawatt Holdings Data Center Site (417 County Route 42)

ZeroC Data Centers LLC (majority-owned by Petawatt Holdings, Inc.) · Massena · NY

PROJECT FACTS

Facility overview

Proposed

Operator: ZeroC Data Centers LLC (majority-owned by Petawatt Holdings, Inc.)
Location: Massena, St. Lawrence, NY
Operating power capacity: Not publicly reported
Planned power capacity: 200.0 MW
AI classification: Not classified
Source confidence: Reported
Reported energy source: Not publicly reported
Reported utility: Massena Electric Department (MED)
Cooling system: Not publicly reported
Location accuracy: approximate
Original announcement: 2025-01
Source record updated: 2026-09-21

Operating MW and planned MW are separate disclosures, not automatically additive. Blank values mean no established source figure; they do not mean zero. Geolocation may be approximate or represent multiple sites.

SOURCE DOCUMENTATION

Original source links

Massena Town Planning Board minutes, 2025-02-20 — Site Plan Review #2: ZeroC Data Centers LLC & Petawatt Holdings, Inc., 417 County Route 42 (Tax Map 10.001-1-7.21) ↗2026-09-21

Land clearing underway for new Massena data center substation (Petawatt Holdings, County Route 42, 14-acre parcel) ↗2026-09-21

St. Lawrence County planning board makes recommendations for future data centers in Massena (references Petawatt Holdings substation site plan) ↗2026-09-21

St. Lawrence County Planning — LGC 2025 Planning & Zoning presentation: NYISO interconnection queue excerpt (Petawatt Holdings 'St Lawrence Data and Agricultural Center' 200 MW, queue #1213; ZeroC Data Centers 'New York State Artificial Intelligence Data Center' 300 MW, queue #1731; both POI Dennison 115 kV) ↗2026-09-21

Petawatt Massena Data Center — planned, 14 acres ↗2026-09-21

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