FACILITY PROFILE · NY

Arsenal Data Site (Arconic Massena Operations)

Arconic Corporation (Apollo-owned) · Massena · NY

PROJECT FACTS

Facility overview

Proposed

Operator: Arconic Corporation (Apollo-owned)
Location: Massena, St. Lawrence, NY
Operating power capacity: Not publicly reported
Planned power capacity: 933.0 MW
AI classification: Not classified
Source confidence: Rumored
Reported energy source: Not publicly reported
Reported utility: New York Power Authority (NYPA) / National Grid
Cooling system: Not publicly reported
Location accuracy: approximate
Original announcement: Not publicly reported
Source record updated: 2026-10-09

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

St. Lawrence County Planning — LGC 2025 Planning & Zoning presentation: NYISO queue excerpt listing Arconic Corporation 'Arsenal Data Site 250/500/1000' (queue #1728–1730, IR 3/7/2025) ↗2026-09-21

Data Centers in New York — 'Arsenal Data Site', Arconic Corporation, St. Lawrence, 933 MW planned ↗2026-10-09

EPA RCRA profile — ARCONIC MASSENA OPERATIONS, 45 County Route 42, Massena NY 13662 (~2,700 acres) ↗2026-09-21

NYISO Interconnection Queue, Load Projects: #1728/#1729/#1730 'Arsenal Data Site 250/500/1000', Arconic Corporation, peak MW 233 / 233 / 467 (DAT-AI), status 5 ↗2026-10-09

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