SIGNALDATAInsights for the People. Preview
Data center project · St. Lawrence County, New York

NYDIG / North Country Colocation Services Massena campus

Proposed · An expansion of an existing bitcoin-mining site at the former Alcoa East smelter into large data halls powered by St. Lawrence River hydropower.

← New York data centers
Albany CountyAllegany CountyBronx CountyBroome CountyCattaraugus CountyCayuga CountyChautauqua CountyChemung CountyChenango CountyClinton CountyColumbia CountyCortland CountyDelaware CountyDutchess CountyErie CountyEssex CountyFranklin CountyFulton CountyGenesee CountyGreene CountyHamilton CountyHerkimer CountyJefferson CountyKings CountyLewis CountyLivingston CountyMadison CountyMonroe CountyMontgomery CountyNassau CountyNew York CountyNiagara CountyOneida CountyOnondaga CountyOntario CountyOrange CountyOrleans CountyOswego CountyOtsego CountyPutnam CountyQueens CountyRensselaer CountyRichmond CountyRockland CountySaratoga CountySchenectady CountySchoharie CountySchuyler CountySeneca CountySt. Lawrence CountySteuben CountySuffolk CountySullivan CountyTioga CountyTompkins CountyUlster CountyWarren CountyWashington CountyWayne CountyWestchester CountyWyoming CountyYates CountyNYDIG / North Country Colocation Services Massena campus · Proposed · 635 MW
Status
Proposed · as of Sept. 16, 2026
Location
Former Alcoa East and Reynolds sites, Town of Massena · St. Lawrence County
Power
635 MW
About 635 MW (435 MW + 200 MW) in county reporting; WCAX cited 400 MW from NYPA.
Developer and team
North Country Colocation Services (NCCS); NYDIG
Utility
New York Power Authority
Evidence
Primary public records
Size class
50 MW or more (tracker scope)
Map position approximate, from the reported address or area. Updated Oct. 17, 2026.

Updates, newest first

  1. Sept. 30, 2026 NYISO's queue lists the North Country Data Center load (435 MW, under construction) and a further 200 MW Massena Development request. (New York Independent System Operator (NYISO), Sept. 30, 2026)
  2. Sept. 16, 2026 The Massena Town Board voted 3-2 against a six-month data center moratorium; the developer said the project needs no further discretionary DEC permits. (WCAX / WWNY, Sept. 17, 2026)
  3. June 26, 2026 The Massena Town Planning Board took up a revised presubmission that dropped a building, cut the footprint by about 400,000 sq ft and reduced generators to 124. (DatacenterDynamics, July 7, 2026)
  4. May 18, 2026 The St. Lawrence County Planning Board reviewed a three-building plan of about 1.45 million sq ft with 316 backup diesel generators and added conditions. (Watertown Daily Times / NNY360, May 18, 2026)

Conflicts and open questions

  • The Mohawk Council of Akwesasne opposes the project.

Have records about this project? Send them to tips@signaldata.org.