TeraWulf’s $3.2B AI Campus Exposes Gaps in Safety and Power Accountability

Lake Mariner was pitched as a major AI data center development on a former coal mine in Somerset, New York. But the $3.2 billion project’s construction fire, reduced job estimate and grid-based clean-power claims have left a sharper question: when several companies share the economics of an AI campus, who is accountable for its local consequences?

TeraWulf owns and operates Lake Mariner, while Fluidstack is expected to run it. Google holds warrants that could give it a future 14% equity stake in TeraWulf and guarantees Fluidstack’s lease payments; Anthropic is among the companies whose compute demand the campus is intended to serve. The arrangement separates control of the site, its operation, its financing and the demand for its capacity.

That division came into focus after a fire in an unfinished building in early June. Firefighters reportedly encountered no working alarm, no suppression system and three dry hydrants. No one was injured, but Barker Fire Department Chief Steve Matisz said his crew entered with heavy smoke and unidentified chemicals, lacking the safety information normally used to guide a response.

TeraWulf says it is responsible for operational safety, emergency preparedness, required safety systems and coordination with local first responders. It said it added Knox boxes, hydrants and portable safety-data-sheet kits after the fire. Yet Matisz said in mid-August that the hydrants were still dry to his knowledge, a gap between the company’s stated remediation and what the local fire chief had observed.

The economic bargain has also changed. A 2024 planning-board presentation put full buildout employment at 35 to 40 people for a facility drawing up to 500 megawatts. That is far below the 165 permanent jobs associated with the site’s 2019 application for a power discount, which also cited $85 million in capital investment. The New York Power Authority reviews compliance with that arrangement annually and can adjust the site’s benefits if commitments are not met.

The power promise has a defined boundary

• Anthropic’s February commitment covers 100% of grid-infrastructure costs and new generation intended to match demand from its data centers. Lake Mariner is covered by that commitment.
• The commitment addresses electricity pricing, not whether safety, noise or clean-energy claims at the site are being met.
• TeraWulf’s 95% zero-carbon description in 2024 shifted to 91% low-carbon in a 2025 disclosure. The company says the claim reflects the regional grid mix, not a contract for power from specific generators.

That distinction matters because grid electricity cannot be traced from a particular generator to Lake Mariner without a tied market attribute or direct power arrangement. TeraWulf says it does not buy renewable energy certificates to recharacterize the site’s electricity. Anthropic and Google did not publicly establish a way to verify how much of Lake Mariner’s market-procured power meets their relevant clean-energy commitments or standards.

New York’s policy response will not change the position of this project. Lawmakers passed the Responsible Data Center Development Act in June, proposing environmental review, efficiency and labor rules, a renewable-energy transition, community-investment requirements and a one-year permit pause for new facilities drawing at least 20 megawatts. It remained unsigned three months later. Hochul’s narrower July order pauses some new hyperscale permits, but Lake Mariner was already permitted.

For Somerset, the immediate problem is less the absence of interested parties than the distribution of their obligations. The owner has accepted responsibility for emergency readiness. The AI customer has pledged to address a category of electricity costs. But neither fact, on its own, answers how residents can test the promises made around a campus built to serve AI demand.