From a local first to global power: Scaling fusion

Unlocking Infinite Energy: General Fusion’s Path to Sustainable Fusion Power

CEO Greg Twinney of General Fusion highlighted the company’s pioneering work in fusion energy, based in Vancouver. He emphasized that fusion is no longer a distant prospect, with national labs already achieving breakeven conditions. General Fusion’s mission is to bridge the gap from scientific possibility to grid-ready power, building on two decades of focused development.

The world faces escalating energy demand, intensified by AI, which conventional sources cannot sustainably meet. Mr. Twinney asserted that fusion offers a clean, reliable, and dispatchable baseload energy solution. Unlike nuclear fission, fusion provides all the benefits without the negatives, such as regulatory burdens or long-lived radioactive waste.

Its inherent safety means it fails safe, cannot be weaponized, and produces no high levels of radiation, allowing power plants to be located near demand centers globally. General Fusion’s fuel source, deuterium from seawater and bred tritium, ensures an owned fuel cycle, free from geopolitical resource constraints.

This combination of safety, abundant fuel, and clean power positions fusion as the “holy grail” of energy, promising immense market opportunity and energy security. The company’s innovative approach, Magnetized Target Fusion, directly addresses four critical commercialization barriers.

General Fusion focuses on capturing energy efficiently and economically. Their design features a rotating rotor with pistons and liquid metal. Centrifugal force creates a liquid metal cavity into which plasma is injected. External drivers then rapidly compress the liquid metal, increasing the plasma’s density and temperature to fusion conditions.

The liquid metal serves multiple vital functions: it acts as a protective shield, absorbing high-energy neutrons from the fusion reaction, preventing damage to the reactor’s solid structures. As it absorbs neutrons, the liquid metal heats up, transferring thermal energy for electricity generation. Crucially, the liquid lithium within the reactor facilitates tritium breeding, enabling General Fusion to produce more fuel per pulse than consumed. This ensures a self-sustaining fuel cycle and generates excess tritium for future facilities. By utilizing existing materials and avoiding complex, expensive components, General Fusion’s design aims for economic competitiveness.

General Fusion’s Lawson Machine 26 (LM26), assembled in 2024 and commissioned in 2025, is a 50% power plant scale prototype. It is currently compressing plasmas to achieve critical milestones: 1 KEV (10 million degrees), 10 KEV (100 million degrees), and 100% Lawson conditions. Achieving these will demonstrate the necessary fusion temperatures and densities for a commercial power plant, positioning General Fusion as the first private company globally to reach these benchmarks.

The company anticipates achieving LM26 milestones by late 2028. Following this, they will develop high-repetition key components between 2027 and 2030, with the ambitious goal of firing up their first-of-a-kind commercial power plant in 2035. Mr. Twinney highlighted General Fusion’s two-decade head start, extensive machine building, and peer-reviewed scientific library as significant advantages.

A Market Development Advisory Committee, comprising potential first customers, ensures their technology aligns with market needs and is financeable, operable, and scalable. This customer-centric approach, combined with a strong entrepreneurial team, positions General Fusion to successfully transition fusion science from the lab to the grid.