UK Fusion Programme Moves Toward Delivery with STEP Project at West Burton

The UK has taken a major step toward becoming a global leader in fusion energy as the STEP (Spherical Tokamak for Energy Production) programme moves from research into delivery.

The programme will deliver the world’s first prototype fusion power plant at the site of the former West Burton Power Station, positioning Britain at the forefront of next-generation clean energy.

The announcement forms part of a new government Fusion Strategy, unveiled by Patrick Vallance, which aims to accelerate the development of a domestic fusion industry and attract private investment into the sector.

Construction Partner Appointed

A key milestone for the programme is the appointment of the ILIOS consortium as construction partner for the redevelopment of the West Burton site.

The consortium is led by Kier Group and Nuvia, working alongside AL_A, AECOM, and Turner & Townsend.

The partnership will lead the £200 million redevelopment of the former coal-fired power station site, transforming it into a global centre for fusion energy innovation.

Major Construction Programme

As construction partner, the ILIOS consortium will be responsible for:

• Acting as principal design and build contractor

• Delivering all construction works under the STEP programme

• Managing enabling works and early site infrastructure

• Coordinating design integration, civil engineering and buildings

• Managing supply chains and construction logistics

• Ensuring safety, sustainability and quality standards

The wider construction programme is expected to support up to 8,000 jobs at peak, creating opportunities for local businesses, apprenticeships and supply chain partners across the East Midlands, Lincolnshire and South Yorkshire.

Toward a Prototype Fusion Plant

The STEP programme aims to demonstrate commercially viable fusion power, with the prototype plant expected to become operational around 2040.

Fusion technology generates energy by replicating the same process that powers the sun, offering the potential for virtually limitless, low-carbon energy without the long-lived radioactive waste associated with traditional nuclear power.

Investment in Technology and Innovation

Alongside the construction announcement, the government also confirmed a £45 million investment in the Sunrise AI Supercomputer, designed to accelerate fusion modelling, simulation and operational development.

The West Burton project will also include major test facilities and research programmes, creating opportunities for companies across engineering, manufacturing, digital technology and professional services.

The programme is expected to deliver long-term benefits including:

• Skilled jobs during construction and operation

• New apprenticeships and training pathways

• Early supply chain opportunities for UK businesses

• Regional economic growth and clean energy innovation

The STEP programme marks a decisive shift for the UK fusion sector—from experimental research to real-world infrastructure delivery.