S-1 filing

Anthropic natural gas shown as an upright compressed gas cylinder with a valve and handwheel on top

Anthropic Is Burning Gas to Feed the AI Boom

Anthropic’s S-1 admits that some of its planned data centers will run on on-site natural gas, with fuel costs passed through without caps. We read the energy risk factor page by page, look at the Texas gas-turbine sites linked to Anthropic, its electricity price pledge, the climate catch-22 and what it means for investors and businesses using Claude.

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nscale ipo concentrated ai bets wall street a cooling tower with a curved waisted profile

Nscale’s IPO Will Test Wall Street’s Appetite for Concentrated AI Bets

Nscale Limited filed its Form S-1 on 18 September 2026, seeking a New York listing under the ticker NSCL. Microsoft and Anthropic together account for $88.4 billion of its $103.4 billion contracted book — 85.5% on the company’s own figures — and only $2.6 billion of that total is actually active. The prospectus also discloses that no binding financing commitments exist for the Anthropic deployment, and carries going-concern language resolved by a plan to build less. This article works through the filing, the arithmetic, the peer comparison and what an amended filing still has to add.

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