Realta Fusion

What Realta Fusion does

Realta Fusion is a Madison, Wisconsin-based fusion energy company developing compact, scalable, modular magnetic mirror fusion systems (branded CoSMo Fusion™) for industrial heat and power applications. The technology confines plasma between two high-temperature superconducting (HTS) magnets using the magnetic mirror effect, paired with patented ion and electron RF heating and high-energy neutral particle injection to optimize plasma performance. The company originated as a 2022 spin-out from the University of Wisconsin-Madison, leveraging 60+ years of institutional nuclear engineering research; its WHAM experiment achieved a world-record 17 Tesla magnetic field in July 2024, the highest ever applied in a magnetic confinement device. Realta's product roadmap includes the BEAM break-even experimental device, the Anvil prototype reactor targeted for 2028 operation, and a planned commercial pilot plant in the mid-2030s, supported by a purpose-built R&D facility called The Realta Forge.

Realta's business model is pre-commercial: the company intends to monetize by selling or licensing its CoSMo Fusion™ energy systems to enterprise industrial customers through direct field sales, targeting hyperscale data centers (for AI-driven continuous power demand), chemical processing plants, metal recycling facilities, and remote mining operations — all "hard-to-decarbonize" sectors requiring high-temperature heat or off-grid power. To date, the company has raised approximately $57.5 million in disclosed capital (a $12M seed in 2023, a $36M Series A in 2025 led by Future Ventures, and a $9.5M growth capital facility from Silicon Valley Bank in 2026), supplemented by roughly $7.6M in DOE non-dilutive awards including ARPA-E grants, DOE INFUSE project awards, and selection in the DOE Milestone-Based Fusion Development Program. Strategic alliances with Commonwealth Fusion Systems (HTS magnet supply, 2026) and Kyoto Fusioneering (plasma heating systems and tritium blanket development, 2026) anchor its critical supply chains. The RealTwin digital twin platform models mirror-fusion plasma behavior using adapted tokamak simulation codes, and the company participates in the STELLAR-AI initiative at Princeton Plasma Physics Laboratory.

Name

Realta Fusion

Legal name

Realta Fusion, Inc.

Website

https://realtafusion.com

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

11–50 employees

Short description

Realta Fusion develops compact, modular magnetic mirror fusion energy systems (CoSMo Fusion™) for on-site industrial heat and power, targeting data centers, chemical processing, metal recycling, and remote mining. The UW-Madison spin-out is pre-revenue, with a prototype reactor targeted for 2028.

Ownership category

akta.pro rank

Product category

Fusion Energy Systems

NAICS

Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Motors & Generators (3621)

akta.pro primary industry

Hybrid Renewable Systems & Co-Optimization R&D (Solar+Wind+Storage, Multi-Resource Plants, Controls) (EUAMAOAI)

Keywords

• Magnetic mirror fusion
• Fusion energy systems
• Plasma confinement technology
• Industrial heat and power
• High-temperature superconducting magnets

Headquarters

HQ city

Madison

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Infrastructure, Operations, Marketing or Sales

Revenue model

1. Fusion Energy Systems (Future): Pre-revenue company developing compact, modular fusion energy systems for industrial heat and power applications. Planned commercial revenue from selling fusion energy systems to industrial customers including data centers, chemical processing, metal recycling, and mining operations. Target of prototype by 2028 and pilot plant by mid-2030s.
2. R&D Services and Technology Licensing (Future): Potential revenue from technology development, licensing, and consulting services related to magnetic mirror fusion technology and HTS magnet integration.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels7 records

Core offering

Realta Fusion develops compact, scalable, modular magnetic mirror fusion energy systems (CoSMo fusion™) intended to deliver on-site industrial heat and power to data centers, chemical processing plants, metal recycling facilities, and remote mining operations. The technology confines plasma between two high-temperature superconducting magnets and uses patented ion and electron RF heating combined with high-energy neutral particle injection. The company is pre-revenue, with a stated prototype target by 2028 and a pilot plant target in the mid-2030s.

Product overview

Realta Fusion offers a portfolio of products centered on its proprietary CoSMo fusion™ energy system—a compact, scalable, modular magnetic mirror fusion technology. The core product is complemented by the Anvil prototype fusion reactor (targeting operation by 2028) and the experimental BEAM device. The company provides the RealTwin digital simulation platform for modeling fusion systems, and is developing The Realta Forge as a purpose-built R&D facility. The WHAM project, a collaboration with UW-Madison, achieved a world-record 17 Tesla magnetic field. Realta Fusion also sells educational merchandise including a magnetic mirror LEGO kit.

Differentiator

Problem solved

Functional benefit

Products and services

• CoSMo fusion™ Energy System
• Community Fundraiser LEGO Kit

Quantifiable outcome

• 17 Tesla magnetic field - highest ever achieved in magnetic confinement experiment
• +2 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Commonwealth Fusion Systems (CFS)coreTechnology or Integration · 2 April 2026Long-term strategic partnership to design and manufacture high-temperature superconducting (HTS) magnets for Realta's magnetic mirror fusion energy systems. CFS will supply magnets for Realta's prototypes and commercial power plants, including talent-sharing for design and manufacturing. Partnership potential value reaching billions of dollars. This agreement gives Realta access to CFS's world-class HTS magnet supply chain, which Realta CEO Kieran Furlong called a huge leap forward in de-risking one of the most critical technologies for commercializing magnetic mirror fusion.
• Kyoto FusioneeringcoreStrategic or Co-development Partner · 16 March 2026Bilateral strategic partnership to accelerate global commercialization of fusion energy. Covers joint development of plasma heating systems for magnetic mirror fusion machines, mirror-based neutron sources for tritium blanket development, and blanket and fuel cycle technology. Realta has purchased gyrotrons (high-powered microwaves for heating fusion plasma) from Kyoto Fusioneering for installation at its planned research facility in Wisconsin. Partnership includes coordinated government engagement and supply chain development to support cross-border fusion industry growth.
• Princeton Plasma Physics Laboratory (PPPL)minorStrategic or Co-development Partner · 22 January 2026Realta Fusion participates in the STELLAR-AI initiative, an AI-driven research platform connecting computing resources directly to experimental devices. Platform integrates CPUs, GPUs, and QPUs as part of the Genesis Mission to accelerate fusion energy development.
• University of Wisconsin-MadisoncoreStrategic or Co-development PartnerRealta Fusion originated as a spin-out from University of Wisconsin-Madison fusion experiment. Company has a Master Research Agreement with UW to sponsor research on WHAM (Wisconsin HTS Axisymmetric Mirror). WHAM achieved world-record 17 Tesla magnetic field in 2024. UW-Madison has 60+ years of nuclear engineering expertise supporting the company's technology development.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Market position

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/RealtaFusion
• YouTubeyoutube.com/@RealtaFusion
• LinkedInlinkedin.com/company/realta-fusion

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds8 records

Investors15 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Realta Fusion