UK's Artificial Sun Reaches 100,000,000°C to Power 70,000 Homes

Tokamak Energy's fusion energy plant aims to revolutionize carbon-free power by the mid-2030s.

Apr. 11, 2026 at 10:51am

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A bold, abstract painting in the style of Hilma af Klint, featuring sweeping geometric arcs, concentric circles, and precise spirals in soft, flat colors against a clean background, representing the complex scientific forces and concepts behind fusion energy.Tokamak Energy's fusion energy breakthrough could revolutionize carbon-free power production, harnessing the power of the sun right here on Earth.Atlanta Today

Tokamak Energy, a UK-based company, has made a breakthrough in fusion energy by achieving plasma temperatures of 100 million degrees Celsius in its ST40 spherical tokamak. This milestone paves the way for the company's pilot fusion energy plant, designed to generate 800 MW of fusion power and 85 MW of net electricity - enough to power around 70,000 homes.

Why it matters

Fusion energy has the potential to revolutionize the global energy landscape by providing a clean, abundant, and sustainable power source. If Tokamak Energy can successfully demonstrate the viability of its fusion technology, it could outpace competitors in the US and China and position the UK as a leader in this transformative energy field.

The details

Tokamak Energy's fusion energy plant will utilize innovative design features, including high-temperature superconducting magnets to confine and control the deuterium and tritium fuel, and a liquid lithium tritium breeding blanket. The company has partnered with US national laboratories and universities, as well as secured funding from the DOE's $46 million fusion development initiative.

  • In 2022, Tokamak Energy became the first company to achieve a plasma temperature of 100 million degrees Celsius in its ST40 spherical tokamak.
  • The pilot fusion energy plant is expected to be fully operational by the mid-2030s.

The players

Tokamak Energy

A UK-based company at the forefront of fusion energy development, founded in 2009 and spun off from the UK Atomic Energy Authority (UKAEA).

Michael Ginsberg

President of Tokamak Energy, who expressed enthusiasm about the company's fusion energy project and its potential to demonstrate net power in the mid-2030s.

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What they’re saying

“The first design details of our high-field spherical tokamak created excitement at the American Physical Society event. We are energized by our mission to demonstrate net power from this pilot plant in the mid-2030s, paving the way for globally deployable carbon-free fusion energy.”

— Michael Ginsberg, President of Tokamak Energy

What’s next

If all goes according to plan, Tokamak Energy's pilot fusion energy plant could be fully operational by the mid-2030s, potentially marking a turning point in the global transition to clean, sustainable energy.

The takeaway

Tokamak Energy's fusion energy breakthrough represents a significant step towards realizing the promise of carbon-free fusion power, which could revolutionize the global energy landscape and position the UK as a leader in this transformative technology.