Anthropic Pays $3.4 Billion to Jump the Power Queue: 1.7 GW of Caterpillar Gas Generators Taken Over From OnePWR

Anthropic has struck a deal worth roughly $3.4 billion to secure 1.7 gigawatts of heavy-duty gas-fired generators for its data center build-out, the Financial Times reported on Sunday, in what the newspaper described as the largest known single purchase of power-generation equipment by an AI laboratory. The commitments were bought from OnePWR Solutions, a San Antonio, Texas-based supplier that builds microgrids and on-site power plants, and Reuters carried the FT's account while noting it could not immediately verify it.

The structure of the deal is unusual. OnePWR had ordered the generators from Caterpillar about two years ago but needed financing to complete the purchase. Anthropic initially planned to become a OnePWR customer, buying electricity from the supplier; instead, it chose to take over the existing equipment orders outright, together with the engineering and construction capabilities needed to install the machines. Anthropic did not acquire OnePWR itself, and none of the supplier's employees transferred to the AI company, according to a person familiar with the matter cited by the FT.

The timing matters as much as the price. The transaction was reportedly struck in late September and only surfaced this weekend, meaning Anthropic locked in equipment availability now and over the following two years rather than waiting at the back of a queue that its own IPO paperwork describes as years long. The filing, made public when the company launched its listing process, warns that generators, turbines and other power equipment "must be ordered years in advance" as data center operators compete for scarce supply, and says certain planned facilities will rely on dedicated on-site natural gas-fired generation. Back-of-the-envelope, $3.4 billion for 1.7 gigawatts works out to roughly $2 million per megawatt of capacity.

The purchase slots into a balance sheet already loaded with infrastructure promises. Anthropic's amended filing disclosed about $895.4 billion in purchase and lease commitments, substantially all tied to compute and infrastructure, with roughly $447.5 billion expected to be spent before the end of 2030. The FT separately reported on Friday that the Claude developer intends to list on Nasdaq before Thanksgiving, making power readiness a concrete due-diligence question for incoming public investors rather than a footnote.

Anthropic is not buying in a vacuum. Caterpillar's own quarterly results show where the demand sits: the Power & Energy division booked $8.78 billion of third-quarter sales, up 18% year over year, with power-generation sales up 30% to $3.42 billion, driven by turbines, large reciprocating engines and data center demand that underpinned a record backlog. OnePWR's orders sat inside that queue; the reported $3.4 billion therefore cannot be read as newly booked Caterpillar revenue, since the machines were already in production.

The caveats are real. Neither Anthropic nor OnePWR responded to requests for comment. The locations where the generators will be installed, the delivery schedule and how the purchase interacts with Anthropic's $895.4 billion commitment total have not been disclosed. A generator order is a claim on future capacity, not operating power: the machines still need sites, permits, fuel supply and interconnection before a single training run benefits. Anthropic pledged in February to cover electricity-price increases caused by its data centers, including grid upgrades, which now sits alongside ownership of its own generation equipment.

The industry signal is hard to miss. Within a week, xAI has been reported powering part of Colossus 2 with converted jet-engine generators, Thai regulators have paused dozens of data center projects, and now the most compliance-minded lab in the sector has spent billions to cut in line for gas engines. Electricity, not model architecture, is becoming the binding constraint on the AI build-out - and the companies that used to compete on tokens per second are starting to compete on megawatts secured.