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What is established
Under construction. 360 MW announced (critical it load); expected Dec 2026; owned or developed by TeraWulf.
What is not disclosed
Accelerator count, hardware platform, project capex, named tenant, power source, cooling technology — not disclosed by any source on this page. Recorded as unknown, never as zero.
Analyst note
Former bitcoin mine on Lake Ontario converted to AI. Fluidstack leases total ~360 MW critical IT load; Google backstops ~$3.2B of Fluidstack obligations. Widely reported as the New York site of Anthropic's $50B Fluidstack program, though Anthropic's announcement does not name Lake Mariner.
Physical work is under way and the evidence includes a primary source.
Power readiness
Capacity basis stated
The source distinguishes IT load from total site power or on-site generation.
Derived from the evidence on this page by a published rule, not a model. How this is calculated.
43.3640, -78.7230
No companies linked to this project yet.
| Metric | Value | Confidence | As of | Basis / methodology | Source |
|---|---|---|---|---|---|
| Power | 360 MW | High | Not disclosed | Basis: IT load. Announced target, not energized capacity. Note: Former bitcoin mine on Lake Ontario converted to AI. Fluidstack leases total ~360 MW critical IT load; Google backstops ~$3.2B of Fluidstack obligations. Widely reported as the New York site of Anthropic's $50B Fluidstack program, though Anthropic's announcement does not name Lake Mariner. | TeraWulf |
Anthropic · Nov 12, 2025 · accessed Jul 28, 2026
a $50 billion investment in American computing infrastructure, building data centers with Fluidstack in Texas and New York
Reliability
95/100
TeraWulf · Aug 18, 2025 · accessed Jul 28, 2026
adds CB-5, a new purpose-built data center building providing an incremental 160 MW of critical IT load
Reliability
95/100
Former bitcoin mine on Lake Ontario converted to AI. Fluidstack leases total ~360 MW critical IT load; Google backstops ~$3.2B of Fluidstack obligations. Widely reported as the New York site of Anthropic's $50B Fluidstack program, though Anthropic's announcement does not name Lake Mariner.
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