Economist Impact’s Fusion Fest 2026 sets the agenda for fusion’s commercial turning point
Category: Magnets, Stellerator, Superconductors, Tokamak, Tritium
Economist Impact’s Fusion Fest returns to London on 14 April 2026, bringing together the scientists, investors, policymakers and engineers who will determine whether fusion energy moves from laboratory promise to grid-scale reality this decade. Held at Convene 200 Aldersgate, St. Paul’s, the day-long conference will tackle the hardest questions facing the sector – and Fusion Future will be covering the event as an official partner.
The programme will open with UKAEA chief executive Tim Bestwick addressing what may be fusion’s most underappreciated challenge: industrial supply chains. Superconducting magnets, advanced materials, tritium systems and specialist engineering skills remain globally concentrated and not yet produced at commercial volumes. Whether the UK can build domestic capacity while staying part of a collaborative global ecosystem will be a thread running through the entire day.
Commercialisation timelines will take centre stage early, with a panel examining whether claims of operating commercial plants by the 2030s are realistic or optimistic. Brandon Sorbom, co-founder and chief science officer of Commonwealth Fusion Systems, will follow with an update on SPARC and the path to ARC, the world’s first grid-scale fusion power plant, addressing the persistent myths that continue to cloud investor and public confidence. Jean Paul Allain from the US Department of Energy’s Office of Fusion Energy Sciences will then set out the federal Fusion Science and Technology Roadmap, which targets commercial fusion by the mid-2030s and signals a deliberate shift from research funding toward industrial acceleration.
The financing architecture of fusion will draw significant discussion. Helion CFO Prag Jain will examine how capital requirements shift once construction begins and delivery commitments harden. A separate panel will address the fact that combined private and public investment in fusion reached $2.6 billion between July 2024 and July 2025, with total cumulative funding now nearing $10 billion, asking what that influx signals about timelines and risk appetite. General Fusion CEO Greg Twinney will discuss the company’s planned Nasdaq listing, which would make it the first publicly traded pure-play fusion company.
Artificial intelligence will feature across multiple sessions – from Google DeepMind senior research engineer Brendan Tracey on AI’s role in compressing development timelines, to a panel on whether fusion could become a credible power source for the data centres and chip fabs driving AI’s surging electricity demand.
Geopolitics, workforce shortages, fusion spin-off technologies, ITER’s evolving role and the case for a fusion moonshot round out a programme that has drawn senior figures from government, finance and research on both sides of the Atlantic. The question at Fusion Fest 2026 is no longer whether commercial fusion is coming – but who builds it first, and on whose terms.
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