Anthropic Reportedly Spends $3.4 Billion on Gas Generators to Power Its AI Data Centres
Anthropic, the company behind the Claude chatbot, has reportedly committed about $3.4 billion to secure gas-fired generators to power its growing network of artificial intelligence data centres, in a deal that shows access to electricity hardware is becoming as important to AI companies as access to advanced chips.
Reuters reported on Sunday, citing the Financial Times, that Anthropic agreed in late September to take over commitments for 1.7 gigawatts of heavy-duty gas-fired generators from OnePWR Solutions, a San Antonio, Texas-based supplier that builds microgrids and on-site power plants. The Hindu BusinessLine carried the Reuters report. The Financial Times described the package as the largest known single purchase of power-generation equipment by an AI laboratory.
The figures remain reported rather than company-confirmed: Reuters said it could not immediately verify the report, and Anthropic and OnePWR did not respond to requests for comment.
What the reported deal covers
The generators are not fresh orders. According to the Financial Times, OnePWR ordered them from Caterpillar, the American maker of engines and generator sets, about two years ago but needed financing to complete the purchase. Anthropic first planned to buy electricity from OnePWR as a customer, then took over the equipment orders itself.
The arrangement also includes the engineering and construction capability needed to install the machines. Anthropic did not acquire OnePWR itself, and none of the supplier’s employees transferred. At about $2 million per megawatt, the reported price reflects how scarce large power equipment has become: 1.7 gigawatts is 1,700 megawatts of nameplate generating capacity, not electricity already delivered to a data centre.
A separate disclosure adds a corroborating detail without naming the buyer. Transaction adviser Piper Sandler lists a $3.4 billion September sale of OnePWR’s power-generation platform to an unnamed “frontier AI lab”. The matching seller, month and rounded value do not by themselves prove it is the same transaction.
Why Anthropic is buying hardware, not just electricity
For an AI company, the constraint has shifted. Chips can be ordered, but the power to run them has to be generated, delivered and connected, and the kit to do that is in short supply. Anthropic’s own IPO prospectus warns that generators, turbines, substations and transmission parts have faced extended delivery timelines, price increases, tariffs and rationing as data centre operators compete for them, and that such equipment “must be ordered years in advance”.
The company has also told investors that some of its planned data centre facilities rely on dedicated on-site natural-gas generation, and that it bears the fuel cost for that power. In February, Anthropic committed to pay for 100 percent of the grid upgrades needed to connect its data centres and to bring net-new power generation online to match their electricity needs. Taking over existing generator orders is the practical side of that pledge: it buys a place in a queue that would otherwise take years to join.
The IPO backdrop
The report lands as Anthropic prepares for a stock market listing under intense scrutiny. The company filed its Form S-1 registration statement with the US Securities and Exchange Commission on 26 October and an amended filing on 2 November. In it, Anthropic disclosed approximately $895.4 billion in aggregate committed spending as of and after 30 September, substantially related to computing resources and infrastructure.
Investor enthusiasm has cooled since the filing. Last week investors balked at Anthropic’s $1.5 trillion IPO valuation as a sharp technology sell-off hit AI stocks, and Reuters has reported that the listing could slip or require a bigger discount, with expected valuations now put at $1.2 trillion to $1.3 trillion.
The political backdrop is tightening, too. Last week voters rejected data centre projects in last week’s midterms in several communities, and Democrats are preparing legislation on AI systems and data centre development when they take control of Congress in January.
What is still unconfirmed
The most important unanswered questions are practical ones. Where will the generators go, when will they arrive, and which data centres will they serve? The Financial Times report does not say, and no permits, site names or in-service dates have been published. One discrepancy also stands out: OnePWR’s own February announcement described about 1.2 gigawatts of equipment in total, roughly 500 megawatts below the reported 1.7 gigawatts, with no explanation for the difference. Until Anthropic or OnePWR confirms the arrangement, the $3.4 billion figure and the 1.7 gigawatt capacity should be treated as reported, not established.
What is established is the direction of travel. AI companies are no longer competing only for chips and cloud capacity. They are buying turbines, generators and the crews to install them, years ahead of need, and the debt taken on to fund AI spending across the industry keeps climbing. In the race to build the largest models, the next bottleneck may not be silicon at all.
