TeraWulf Lake Mariner Data Campus
Operating · TeraWulf · 7725 Lake Road, Barker, NY
TeraWulf's Lake Mariner Data Campus at 7725 Lake Road, Barker, Niagara County, New York, sits on the former Somerset coal plant site in NYISO Zone A. Bitcoin mining began in March 2022; as of June 30, 2026 the campus operated 145 MW of legacy mining capacity, which is being curtailed or repurposed. By July 2026, 102 MW of critical IT HPC capacity was energized for Core42 and Fluidstack, with 336 MW under construction across CB-4 and CB-5.
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Overview
- Campus power
- 102 MW
- Critical IT Load · Reported
- Status
- Operating
- Operating campus
- IT floor area
- Not disclosed
- Campus
- Compute profile
- Crypto Mining · AI HPC
- Cooling design
- Reported
- Closed-loop cooling; no lake water drawn for cooling
- Project scope
Power and grid
| Capacity | Basis | Status | Scope | As of |
|---|---|---|---|---|
| 145 MW | Capacity basis unspecified | Reported | Exact Asset | 2026-06-30 |
| Legacy bitcoin mining capacity operated as of June 30, 2026; mining facilities are being curtailed or repurposed for HPC; basis unspecified. | ||||
| 102 MW | Critical IT Load | Reported | Exact Asset | — |
| Critical IT HPC leasing capacity energized by July 2026 (Core42 60 MW plus Fluidstack CB-3). | ||||
| 336 MW | Critical IT Load | Under Construction | CB-4 and CB-5 | — |
| Critical IT capacity under construction across CB-4 and CB-5 for Fluidstack; phased delivery from 2H 2026 into early 2027. | ||||
| 438 MW | Critical IT Load | Reported | Exact Asset | — |
| Operator-reported contracted critical IT capacity of a 600 MW critical IT total. | ||||
Facility and development
- Construction
- Former Somerset coal plant site; bitcoin mining began March 2022, and HPC buildings CB-3 (delivered July 2026), CB-4 and CB-5 are being added in phases.
- Facility class
- Crypto Mining · AI HPC · Colocation
- Cooling systems
- Closed-loop cooling; no lake water drawn for cooling
- Permits and dockets
- EPA ICIS-NPDES stormwater construction NYR11I538 (Empire State Data Hub - Lake Mariner Data LLC)