Core42 at Lake Mariner
AI data center in Barker, New York, operated by Core42 (G42).
Core42's two leased halls at TeraWulf's Lake Mariner campus in western New York, separate from the Fluidstack halls. Epoch AI estimates about 58 MW of IT power.
Power: what each source says
Epoch AI estimates 58 MW IT / 58 MW facility as of 2026-07-23. TeraWulf leased 70+ MW to Core42 for buildings 1-2.
Figures labelled Epoch AI are estimates from satellite imagery, permits and filings. Company figures come from the operator, owner or its filings. IT power is what the servers draw; in Epoch AI’s figures for these campuses it runs about 15–35% below total facility power.
Tenants
Reported G42 (likely, per Epoch AI)
“Reported” means a press outlet or Epoch AI named the tenant and neither the operator nor the tenant has confirmed it. The outlet is named in brackets and listed under sources.
Campus facts
- Operator
- Core42 (G42) 1
- Owner / developer
- TeraWulf 1
- City
- Barker 1
- State / region
- New York (Niagara County) 1
- Country
- United States 1
- First power
- 2025-10 1
- Chips
- NVIDIA B200 (Epoch AI) 1
- GPUs / accelerators
- Not published
- Cooling
- Not published
- Power source
- grid (New York hydro-heavy supply) 1
- Coordinates
- 43.33° N, 78.55° W (town level)
- Verified
Sources
- Epoch AI data center profile: Core42 Lake Mariner (CC-BY 4.0) (licence: CC BY 4.0) accessed 2026-11-09
- Epoch AI, AI data centers dataset (CC-BY 4.0, updated 2026-11-06) (licence: CC BY 4.0) accessed 2026-11-09