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Atum Energies

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Advanced plasma confinement for commercially viable fusion power.

London, United KingdomFounded 2026Energy
Headcount <100 Current team size
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About Atum Energies

Atum Energies is a deep-tech company focused on making nuclear fusion commercially viable. The company was founded by computational physicist James Leetch, who holds a PhD from the University of Southampton, and chemist Jessica Onie, who has a Master's from Imperial College London and a background in finance and economics. The team is addressing a core challenge in fusion energy: plasma instability, which causes energy leakage from reactor cores and constrains the development of cost-effective power plants. The company's core technology is IsoZero, a novel magnetic field configuration designed to suppress plasma instability at its source. This approach aims to minimize energy loss and maximize the energy output per unit of cost, paving the way for financially sustainable fusion power. Atum Energies is leveraging advanced computational physics and developing digital twin simulations to model, optimize, and de-risk the IsoZero concept before physical prototyping. Atum Energies' business model is centered on licensing its intellectual property. The company plans to launch a proprietary simulation software, ConfiNeX, as a design and analysis tool for the broader fusion industry starting in 2030. Concurrently, it will develop a licensable reactor design based on its IsoZero technology. The ultimate goal is to facilitate the production of scalable power plants that can be built worldwide to support the energy transition toward 2050. The company is currently in the process of raising funds to advance its computational work.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2026
Headquarters
London, United Kingdom
Employees
3
Open positions
None listed
Dealroom signal
28.7/100
Industry
Energy
Sector
Energy, Nuclear Fusion, Climate Tech, uk is8 clean energy industries
Business model
Manufacturing
Client focus
b2b

Growth signals

Atum Energies website traffic

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Latest monthly visits50
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Global footprint

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🇬🇧 United Kingdom · London HQ
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