Anthropic drops $3.4B on gas generators to keep Claude's lights on

Anthropic has agreed to spend $3.4 billion on gas-fired generators to feed its data centers, according to the Financial Times. The FT calls it the largest single purchase of power-generation equipment ever made by an AI lab. The deal covers 1.7 gigawatts of heavy-duty generators from OnePWR Solutions, a supplier based in San Antonio, Texas, locked in during late September.

Anthropic didn't buy the company. OnePWR stays independent, though the arrangement handed Anthropic the engineering and construction muscle needed to actually install the generators, the FT reports. Nobody on OnePWR's payroll moved over to the AI lab, per a person familiar cited by the FT.

The setup flipped midstream. Anthropic first planned to be just a customer, then instead took over OnePWR's existing orders for Caterpillar generators, according to the FT. OnePWR had placed those orders two years ago but needed financing to close the purchase.

Neither Anthropic nor OnePWR commented to the FT, and neither responded to Bloomberg or Reuters. Reuters said it hasn't independently verified the FT's account.

The power grab tracks with a compute crunch: Reuters links it to surging demand for Anthropic's Claude models. The company has already pledged billions to data centers worldwide, including a $50 billion plan announced last year spanning Texas, New York and other U.S. sites, plus a $35 billion financing arrangement leasing chips across five data centers with Google backstopping the deal.