Which companies make fusion for AI data centers?

This catalog lists 9 companies on Fusion: Commonwealth Fusion, General Fusion, Helion, Marvel Fusion, Pacific Fusion, TAE, Tokamak Energy, Type One, Zap.

How reliable are these fusion supplier placements?

The 9 placements on this part break down as 9 disclosed. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a taxonomy lead with no citation yet.

8.06

Who makes fusion for AI data centers

Fusion (long-dated PPAs)

Long-dated power purchase agreements with fusion developers, none of which have yet demonstrated commercial electricity generation.

Fusion PPAs are contracts for power from developers pursuing net-energy-gain fusion reactors, none of which currently generate commercial electricity — this is the furthest-dated and most speculative category in the layer, sitting conceptually alongside the SMR and advanced reactor bets in Layer 8.05 but with an even longer and less certain path to first delivered megawatt. Several of the largest AI operators have signed these agreements as long-horizon options on future firm power rather than as near-term supply. Because no fusion developer has a working commercial plant, these deals carry essentially all technology and schedule risk on the developer side, and none of it should be read as contracted revenue in the way a signed utility PPA (Layer 8.07) would be. An investor should treat named delivery dates as targets rather than commitments and focus on which developers have independently verified net-energy milestones rather than announced offtake volume alone.

AI delta: AI operators have signed long-dated fusion PPAs as options on future firm power, providing capital and demand signals to developers years before any commercial generation is proven.

Appears at:GW-class campus· cooling:any — Relevant only to the largest, longest-horizon gw_class power roadmaps given the multi-year to multi-decade timelines involved.

Companies on this part (9)

Show:

Company	Role	Ownership	Confidence	Note
Commonwealth Fusion	manufacturer	private	disclosed	· source
General Fusion	manufacturer	private	disclosed	· source
Helion	manufacturer	private	disclosed	· source
Marvel Fusion	manufacturer	private	disclosed	· source
Pacific Fusion	manufacturer	private	disclosed	· source
TAE	manufacturer	private	disclosed	· source
Tokamak Energy	manufacturer	private	disclosed	· source
Type One	manufacturer	private	disclosed	· source
Zap	manufacturer	private	disclosed	· source

Who competes here

The same table read the other way: every company above competes for fusion sockets. Confidence tags matter — an inferred placement is a lead, not a confirmed rivalry.

Nearby parts

Previous in layer: SMRs, advanced reactors, components, fuel
Next in layer: Utilities, IPPs & power providers signing data-center deals
Layer: Layer 8 — Power generation & energy supply

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Latest feed

Number of data center fires and power failures has doubled since 2024 — Data Center Dynamics, 2026-10-12
Data from the Energy Incident Register shows a significant increase in fire and power failure incidents related to power infrastructure since 2024.
PPPL Partners on Genesis Mission Project to Build AI Digital Twin for Fusion Energy — HPCwire, 2026-10-09
PPPL is partnering on the Genesis Mission Project to develop an AI-powered digital twin for fusion energy.
China's 'BEST' fusion reactor enters the engineering endgame — DigiTimes, 2026-10-01
China's 'BEST' fusion reactor has reached the engineering phase of its development.
PPPL Links STELLAR-AI with UK Fusion Supercomputer Under Genesis Mission — HPCwire, 2026-09-14
A proposed federation plans to link PPPL’s STELLAR-AI with the UKAEA’s AI supercomputing platform to accelerate fusion energy research.
AI server exports to US slow; electronics parts jump 1.5 times in August — DigiTimes, 2026-09-13
Taiwan reported that electronic parts exports reached a record high of $32.22 billion in August 2026, with integrated circuits and printed circuit boards seeing significant growth.
Exclusive: Taiwan's first tokamak to begin plasma testing by end of 2026 — DigiTimes, 2026-09-04
Taiwan's first tokamak is scheduled to start plasma testing by the end of 2026, highlighting the ongoing technical challenges in achieving commercial fusion power.

Questions about fusion

What is fusion?: Long-dated power purchase agreements with fusion developers, none of which have yet demonstrated commercial electricity generation.
Which companies make fusion for AI data centers?: This catalog lists 9 companies on Fusion: Commonwealth Fusion, General Fusion, Helion, Marvel Fusion, Pacific Fusion, TAE, Tokamak Energy, Type One, Zap.
How does AI change demand for fusion?: AI operators have signed long-dated fusion PPAs as options on future firm power, providing capital and demand signals to developers years before any commercial generation is proven.
How reliable are these fusion supplier placements?: The 9 placements on this part break down as 9 disclosed. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a taxonomy lead with no citation yet.

Sources: placements without a source URL come from the taxonomy seed and are tagged accordingly. How this data is built.· Markdown · JSON