Type One Energy

HardwareKnoxville, USAFounded 2019· One of 1725 Hardware companies tracked by AMPulse

A fusion energy company developing a commercial stellarator power plant that utilizes high-field superconducting magnets and advanced additive manufacturing to provide baseload carbon-free energy.

CEO / Founder: Christofer Mowry
Team Size: 51-200
Stage: Active
Total Funding: $169.4M
Latest Round: Debt
Key Investors: Breakthrough Energy Ventures, TDK Ventures, Mithril Capital, Foxglove, JVP, DNV, Commonwealth Fusion Systems, Doral Energy-Tech Ventures

Technology & Products

Key Products

Infinity One (Pilot-scale stellarator device), FusionDirect (Commercialization roadmap and technology platform), High-Temperature Superconducting (HTS) Magnet Systems, Advanced Additive Manufacturing (Metal AM) for fusion components

Technological Advantage

The 'FusionDirect' program leverages the world-leading physics results of the Wendelstein 7-X (W7-X) stellarator, significantly reducing scientific risk compared to unproven fusion concepts.

Differentiation

Value Proposition

Offers a lower-risk path to fusion by using the inherently stable stellarator configuration, which enables continuous (non-pulsed) operation and avoids the plasma instabilities common in tokamak reactors.

How They Differentiate

Type One Energy utilizes a 'FusionDirect' approach that combines the proven physics of the Wendelstein 7-X stellarator with High-Temperature Superconducting (HTS) magnets and advanced additive manufacturing (3D printing). Unlike tokamaks, their stellarator design is inherently steady-state and avoids the plasma instabilities (disruptions) that plague other fusion methods.

Market & Competition

Target Customers

Electric utilities, independent power producers (IPPs), and large-scale industrial energy consumers requiring 24/7 carbon-free power.

Industry Verticals

Energy & Utilities, Clean Technology, Heavy Industry, Power Generation

Competitors

Proxima Fusion, Zap Energy

Growth & Milestones

Growth Metrics

Expanded team to over 50 employees; transitioned from R&D to pilot plant construction phase with the 'Infinity One' project.

Major Milestones

Selected for the U.S. Department of Energy’s Milestone-Based Fusion Development Program in 2023, Announced the construction of 'Infinity One' stellarator at TVA's Bull Run Fossil Plant site in Feb 2024, Successfully closed an expanded Series A funding round totaling $82.4M in May 2024

Notable Customers

Tennessee Valley Authority (TVA); U.S. Department of Energy (DOE)

https://www.typeoneenergy.com

Why this company matters

AMPulse analysis, not a company disclosure

Type One Energy is pursuing a commercial stellarator fusion power plant that combines the inherently stable, continuous-operation physics of the stellarator configuration with modern high-temperature superconducting (HTS) magnets and metal additive manufacturing. The company's approach directly addresses the historical construction challenges that have prevented stellarators from scaling, namely the extreme geometric complexity of their magnetic coils and vacuum vessels. By leveraging metal AM to fabricate these intricate components, Type One aims to reduce both cost and lead time relative to conventional manufacturing methods.

The company's FusionDirect commercialization roadmap builds on the world-leading plasma physics results from the Wendelstein 7-X stellarator at the Max Planck Institute for Plasma Physics, significantly lowering scientific risk compared to unproven confinement concepts. Its pilot-scale device, Infinity One, is under construction at the Tennessee Valley Authority's Bull Run Fossil Plant site, with TVA serving as both a deployment partner and potential first customer for grid integration. Type One also collaborates with Oak Ridge National Laboratory on technical R&D and has received backing from Breakthrough Energy Ventures, TDK Ventures, and Commonwealth Fusion Systems.

Target customers include electric utilities, independent power producers, and large industrial energy consumers requiring 24/7 carbon-free power. The company was selected for the U.S. Department of Energy's Milestone-Based Fusion Development Program in 2023 and closed an $82.4 million Series A round in May 2024. Its primary differentiator is the combination of proven stellarator physics, HTS magnets, and additive manufacturing to deliver a steady-state fusion system that avoids the plasma disruptions common in tokamak designs.

The key open question is whether metal AM can produce stellarator components at the scale, quality, and cost required for a commercial fusion plant, and whether the company can maintain its timeline to grid power within the next decade against competing fusion approaches like those from Proxima Fusion and Zap Energy.