Anthropic Pays $3.4 Billion for Gas Generators. I Did the Math

In short

• Anthropic has agreed to pay 3.4 billion dollars for gas-fired generators for data centres, according to the Financial Times as reported by The Edge Malaysia. The FT calls it the largest known single purchase of power-generation equipment by an AI lab.
• These are commitments for 1.7 gigawatts of heavy-duty generators, bought in late September from OnePWR Solutions, a San Antonio-based supplier, without buying the company itself.
• Our math: 3.4 billion dollars divided by 1.7 billion watts comes to about 2 dollars per watt, or 2,000 dollars per kilowatt. The source does not say what the price covers.

Exhibit A

In late September, Anthropic bought commitments from OnePWR Solutions for 1.7 gigawatts of heavy-duty generators. Not the company: its orders. At first, Anthropic planned to buy electricity from OnePWR. It ended up taking over the Caterpillar generator orders that the supplier had placed. It wanted the power. It took the machines.

The price: 3.4 billion dollars, the largest known single purchase of its kind by an AI lab, according to the FT. Neither OnePWR nor Anthropic would comment to the paper.

The division

On a light-bulb box, you read watts. That is power: what a device draws, or what a machine can deliver, at a given moment. A gigawatt is a billion watts. A thousand megawatts.

To picture 1,700 megawatts, take a French benchmark. EDF gives about 1,600 electrical megawatts for the Flamanville EPR, its new-generation nuclear reactor connected to the grid at the end of 2024. The commitments Anthropic took over therefore cover a little more than that reactor's power: 1,700 megawatts versus 1,600 (power, not output).

Now, the bill. 3.4 billion dollars divided by 1.7 billion watts: 2 dollars per watt. That is 2,000 dollars per kilowatt, or 2 million dollars per megawatt. This is our calculation, not a price published by Anthropic or by OnePWR, and the source does not say what the 3.4 billion covers.

The seller who wanted to sell power

OnePWR describes itself as a turnkey energy solutions provider: microgrids, fixed power plants, power generation it owns and operates itself, sold under long-term contracts. Which is exactly what Anthropic first planned to do: buy electricity from it.

In March 2026, OnePWR and its sister company Spotlight Power announced the deployment of two gas-fired power projects in North Dakota, using sixteen Caterpillar generator sets, for 20 megawatts in total. The commitments Anthropic took over cover 85 times as much: 1,700 megawatts versus 20.

The Edge's text sees it as the latest sign of a trend: AI labs pushing deeper into the energy industry and bypassing intermediaries to secure scarce power equipment. Anthropic, the text adds, had so far relied heavily on partners for power, chips, data centres and land. I had already read another of its contracts, on the buildings side: Anthropic's data-centre lease at TeraWulf, backed by Google. On the gas side, White Rose followed the NAACP lawsuit against xAI's gas turbines in Mississippi.

The number not to mix in

In the same text, The Edge cites another figure: Anthropic said it intends to spend more than 895 billion dollars in the years ahead, mostly on computing power and infrastructure.

That is not the price of this deal. It is a different announcement, and that figure goes into none of my calculations.

What we don't know yet

• What the 3.4 billion covers. The machines alone, or also installation, gas, maintenance? The source does not break it down. Our 2 dollars per watt is therefore a raw average.
• The machines themselves. The model of the "heavy-duty generators", their number and their delivery schedule are not given.
• Where they go. Which data centres, where, and by when: nothing in the source.
• Anthropic's side. The company did not comment to the FT, and we found no press release.

Verdict: 2 dollars per watt, on average. I have the total. Not the line items.

Key terms

• Watt (W): the unit of power, what a device draws or a machine delivers at a given moment.
• Kilowatt, megawatt, gigawatt (kW, MW, GW): a thousand watts, a million watts, a billion watts. 1.7 GW = 1,700 MW = 1,700,000 kW.
• Electrical megawatt (MWe): the electrical power a plant can send out, the unit EDF uses for its reactors.
• Power versus output: power is counted at an instant, in watts; output is counted over time, in watt-hours. A 1 MW machine running for one hour produces 1 megawatt-hour.
• Gas generator (generator set): a machine that burns gas to produce electricity on site.
• Commitments (in this article): the Caterpillar generator orders that OnePWR had placed and that Anthropic took over.

Source sheet

• Who reports it: the Financial Times, as reported by The Edge Malaysia ("Anthropic buys power for AI data centres in US$3.4 bil deal, FT says", 08/11/2026). Neither Anthropic nor OnePWR commented.
• OnePWR: press release of 25/03/2026 distributed by GlobeNewswire, read in its republication on Yahoo Finance.
• EDF benchmark: official page of the Flamanville EPR, read on 08/11/2026.
• Links: The Edge Malaysia · OnePWR press release · EDF, Flamanville EPR (in French)

Source passages

Pages read on 08/11/2026 (dated copies in the article folder). Amounts in US dollars.

Show the 6 sources

Ref.	Quote (original language)	URL
S1↑1↑2↑3↑4↑5↑6+1	"Anthropic PBC has agreed to pay US$3.4 billion for gas-fired generators for data centrers, the FT reported, in what it described as the largest known single purchase of power-generation equipment by an AI lab." ; "The company bought commitments for 1.7 gigawatts of heavy-duty generators from San Antonio-based equipment supplier OnePWR Solutions in late September, without acquiring the company itself, according to the newspaper." ; "Anthropic initially planned to buy power from OnePWR before instead taking over its Caterpillar Inc generator orders, it added." ; "The purchase is the latest sign of AI labs pushing deeper into the energy industry and bypassing intermediaries in the race to secure scarce power equipment." ; "after relying heavily on partners to secure power, chips, data centres and land" ; "The company said on Monday that it intends to spend more than US$895 billion in the years ahead, with most of the total related to computing-power costs and infrastructure." ; "OnePWR and Anthropic declined to comment to the FT"	https://theedgemalaysia.com/node/825001
S2↑1↑2↑3	"HOUSTON, March 25, 2026 (GLOBE NEWSWIRE) -- In North Dakota, OnePWR Solutions and Spotlight Power LLC announced the successful deployment of two behind-the-meter power generation projects" ; "generating a combined 20 megawatts of continuous power utilizing sixteen CAT XGC1900 reciprocating natural gas generator sets" ; "OnePWR Solutions is a turnkey energy solutions provider, focused on developing decentralized microgrids, fixed power plants, and other owned-and-operated power generation solutions." ; "custom, onsite build-to-suit power generation infrastructure and long-term power purchase agreements" ; "OnePWR Solutions' sister company, Spotlight Power"	https://finance.yahoo.com/sectors/energy/articles/onepwr-solutions-spotlight-power-deliver-130000056.html
S3↑1↑2	« 1600 MWe » ; « Le réacteur de Flamanville 3 est un réacteur à eau pressurisée de type EPR d'environ 1 600 MWe. » ; « EPR, un réacteur de nouvelle génération » ; « après son couplage au réseau fin 2024 »	https://www.edf.fr/centrale-nucleaire-flamanville3
R1↑1↑2	Kira's calculation, S1: $3,400,000,000 / 1,700,000,000 W = $2 per watt; × 1,000 = $2,000 per kilowatt; × 1,000,000 = $2,000,000 per megawatt. Raw average price: the source does not say what the 3.4 billion covers.	— (in-house calculation)
R2↑	Kira's calculation, S1S3: 1.7 GW = 1,700 MW, versus about 1,600 MWe for the Flamanville EPR; a gap of about 100 MW. Compares power, not output.	— (in-house calculation)
R3↑	Kira's calculation, S1S2: 1,700 MW / 20 MW = 85.	— (in-house calculation)