Anthropic buys 1.7 gigawatts of gas generators for AI data centers

Overview

Updated 1 hour ago

In late September, Anthropic agreed to pay about $3.4 billion for 1.7 gigawatts of heavy-duty gas-fired generators. The equipment had been ordered from Caterpillar roughly two years earlier by OnePWR Solutions, a San Antonio developer of behind-the-meter power plants. Anthropic took over the orders and the engineering and construction work needed to install them, but did not buy OnePWR itself.

The purchase is the largest known single buy of power-generation equipment by an AI lab. It moves Anthropic past the utilities and power developers it has relied on and into the business of securing its own electricity, as turbine and generator lead times stretch into years.

Why it matters

AI's bottleneck is moving from chips to electricity, and Anthropic is now buying generators directly rather than waiting for utilities.

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Key Indicators

$3.4B

Deal value

Price for the generator commitments plus installation work.

1.7 GW

Generating capacity

Heavy-duty gas-fired capacity secured for Anthropic data centers.

$895B

Anthropic commitments

Contractual commitments disclosed in its amended S-1, mostly compute and infrastructure.

$447.5B

Commitments due by 2030

Share of the total commitments falling due by the end of the decade.

2 years

Age of Caterpillar order

OnePWR placed the generator order about two years before the deal, ahead of recent price increases.

Voices

Curated perspectives — historical figures and your fellow readers.

People Involved

Dario Amodei

Co-founder and chief executive of Anthropic

Leading Anthropic as it prepares a stock-market listing

Arash Nazhad

Managing director and head of clean energy and power at Stifel

Not a party to the deal; commented on the strategy behind it

Organizations Involved

Anthropic

AI company

Buyer of the generator commitments

Maker of the Claude AI models and one of the largest buyers of computing infrastructure.

OnePWR Solutions

Power equipment developer

Seller of the generator commitments

San Antonio developer of behind-the-meter power plants and microgrids.

Caterpillar Inc.

Public company

Builder of the generators in the order

Manufacturer of the heavy-duty gas generators OnePWR ordered and Anthropic is now buying.

Timeline

2024 November 2026

5 events Latest: Today

Tap a bar to jump to that date

November 2026
Trade press details the $3.4 billion purchase
Today Disclosure

Construction Review and other outlets report the 1.7 GW off-grid power transaction.
Today
Financial Times reports the generator deal
Disclosure

The FT calls it the largest known single power-equipment purchase by an AI lab.
Yesterday
Anthropic discloses gas reliance in amended S-1
Filing

The filing lists $895 billion in commitments and warns of generator delivery constraints.
7 days ago
September 2026
Anthropic takes over 1.7 GW generator order
Deal

Anthropic agrees to pay about $3.4 billion for the commitments, engineering and construction work.
September 2026
2024
OnePWR orders generators from Caterpillar
Supply

The order predates the recent price surge and multi-year manufacturing queues.
2024

Scenarios

Generators from the order supply an Anthropic data center by 2028

Possible Resolves by End of 2028

Discussed by: Financial Times and Dealroom, citing people familiar with the deal

Anthropic took over equipment ordered roughly two years ago, which could shorten the wait compared with new turbine orders. If installation stays on track, at least some of the 1.7 gigawatts would move from order book to operating capacity within two years.

Anthropic names the sites and delivery schedule in an SEC filing

Likely Resolves by Q2 2027

Discussed by: Dealroom, citing Anthropic's amended S-1

The company has not disclosed where the generators will go or when each batch will arrive. Because Anthropic is preparing a stock-market listing, its SEC filings are the most likely place for those details to surface.

Air-quality permitting delays a gas generator site

Uncertain Resolves by Q2 2028

Discussed by: Il Sole 24 Ore, which reported environmental questions around the gas strategy

Gas-fired generators installed on site still need air permits. A denial, suspension or rehearing at one site would push back part of the 1.7 gigawatts even if the equipment itself arrives on time.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

Early 2026

xAI buys mobile gas turbines (2026)

Elon Musk's xAI, owned by SpaceX, bought about $2 billion of mobile gas turbines. The purchase let the company power its large data centers quickly instead of waiting for grid connections.

Then

xAI brought computing capacity online faster than utility interconnection schedules would have allowed.

Now

The purchase became a template for AI labs buying generation equipment directly.

Why this matters now

Anthropic is following the same playbook, though with a much larger order and a supplier that had already reserved factory slots.

Late 2025

Alphabet acquires Intersect (2025)

Google's parent company, Alphabet, acquired the energy developer Intersect. The deal gave the company control over a power developer rather than only a customer relationship with one.

Then

Alphabet gained direct access to project development and energy infrastructure.

Now

It marked a shift by a major technology company into owning part of the power supply chain.

Why this matters now

Anthropic's deal stops short of buying OnePWR, but it similarly moves the AI lab from electricity customer to equipment owner.