# NYDIG Massena Data Center Campus

NYISO data center · https://askthegrid.com/assets/facilities/nydig-massena-data-center-campus

NYDIG operates a digital currency mining data center in the former Alcoa smelter at 194 County Route 45, Massena, on a 1,375-acre site owned by Reynolds Metals Company. Power arrives at 115 kV from the NYPA Reynolds Substation, fed by the Moses-Saunders hydroelectric dam. An April 2026 application to the Massena Planning Board proposes a 635 MW data center campus of three buildings (160, 160 and 128 MW), a new 435 MW substation, and decommissioning of the existing mining facility.

## Identity and location

- Operating status: operating
- Asset scope: campus
- Location: 194 County Route 45, Massena, St. Lawrence County, NY
- Operator: NYDIG (campus) — https://assets.nydig.com

## Power and grid context

- Campus gross power: 635 MW · reported · campus — Total power capacity of the proposed data center campus in the April 2026 site plan application.
- Reported unspecified: 160 MW · reported · building · Building 1 — Proposed 160 MW data center facility on Lot 1; basis unspecified.
- Reported unspecified: 160 MW · reported · building · Building 2 — Proposed 160 MW data center facility on Lot 2; basis unspecified.
- Substation: NYPA Reynolds Substation; on-site 172 MVA load substation to be replaced by a 115/34.5 kV 435 MW substation
- Interconnection voltage: 115 kV

## Development

- Site area: 1,375 acres
- Construction: The existing digital currency mining facility in the former Alcoa smelter will be decommissioned; three new data center buildings are proposed on about 865 acres.

## Compute and operations

- Facility classes: crypto_mining

## Sources

- [https://assets.nydig.com/files/FINAL_Massena_Data_Center__Site_Plan_Application.pdf](https://assets.nydig.com/files/FINAL_Massena_Data_Center__Site_Plan_Application.pdf)
- [U.S. Census street-address geocode](https://geocoding.geo.census.gov/geocoder/geographies/onelineaddress?address=194+County+Route+45%2C+Massena%2C+NY%2C+13662&benchmark=Public_AR_Current&vintage=Current_Current&format=json)

## Data quality

- Power values retain their reported, requested, contracted, energized, gross-campus, or critical-IT basis.
- Map point: approximate U.S. Census street-address geocode.

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Canonical page: https://askthegrid.com/assets/facilities/nydig-massena-data-center-campus
Profile generated: 2026-10-09T16:44:56.411214Z
Source: Ask the Grid — https://askthegrid.com/