Anthropic is spending $3.4 billion on natural gas turbines as demand for computing power grows and access to electricity becomes less certain. The purchase marks a shift for a company that has generally avoided owning physical infrastructure.
A move from renting toward ownership
The equipment consists of Caterpillar generators that supplier OnePWR had ordered. According to a Financial Times report, the generators can produce up to 1.7 gigawatts of electricity.
Anthropic has historically preferred to rent computing capacity. In its S-1 filing in May, the company disclosed that it pays SpaceX subsidiary xAI $1.25 billion per month through May 2029 to use xAI’s computing power.
The filing also said, “We expect to enter into additional similar services contracts,” indicating that Anthropic anticipated more arrangements to rent computing resources. The turbine purchase points to a parallel concern: securing enough electricity to run those resources.
Why power supply is becoming a constraint
As demand for compute ramps up, the supply of power has become increasingly uncertain. The backlog for natural gas turbines stretches into the early 2030s, while queues to connect to the electrical grid can also be long.
That combination makes existing equipment attractive to a company seeking generating capacity. Buying turbines can provide a route to power when new equipment or a grid connection may take years to obtain. The source describes Anthropic’s purchase as appearing to be a last resort.
OnePWR ordered the turbines a couple years ago but could not find financing to complete the purchase. Anthropic had planned to buy them from OnePWR, then went directly to Caterpillar, the manufacturer.
The report does not explain why OnePWR could not secure financing despite Anthropic’s apparent interest as a customer. The source suggests Anthropic likely wanted to keep the generating capacity for itself, rather than risk a competitor acquiring it.
A wider rush to natural gas
Anthropic’s purchase is part of a broader shift among AI companies toward securing power directly. Google, Amazon, Microsoft, and Meta have all announced plans to build large natural gas power plants for their data centers, generating electricity on site instead of drawing it from the public grid.
These decisions connect the growth of data centers to the natural gas industry. The spending has given a second wind to fracking, the method used to extract natural gas from underground rock.
If planned construction proceeds, U.S. data centers alone could consume more natural gas than Germany and Japan combined by 2035. That prospect shows how electricity choices made by technology companies could affect demand for fuel well beyond the data center itself.
The cost of locking in supply
On-site natural gas power can help companies reduce reliance on grid access, but it also ties them more closely to fuel markets. The source notes that hyperscalers face exposure to natural gas price fluctuations.
One analyst expects prices could more than triple by the end of the decade in some markets. If that happens, Anthropic’s large turbine purchase could become a costly decision. The same investment that secures generating capacity now may leave the company facing higher fuel costs later.
Anthropic’s purchase therefore reflects a tradeoff: it is paying to secure power amid limited availability, while accepting the risks that come with relying on natural gas. The decision underscores how access to electricity has become a strategic part of building AI capacity.