General Fusion

General Fusion aims to develop utility-scale fusion power using Magnetized Target Fusion (MTF) technology. In December 2022, the company demonstrated plasma energy confinement times, plasma temperatures, and compression system performance that support its goal of meeting 100 million degrees Celsius in its MTF demonstration. 

In August 2023, General Fusion announced a new MTF machine known as “Lawson Machine 26” (LM26). The company intends to use the machine to achieve fusion conditions of over 100 million degrees Celcius (180 million degrees Fahrenheit) by 2025, and progress toward scientific breakeven by 2026. The LM26 is designed to validate the company’s ability to symmetrically compress magnetized plasmas in a repeatable manner and achieve fusion conditions at scale. It integrates the company's existing operational plasma injector with a new lithium liner compression system.

Construction of General Fusion’s demonstration at the United Kingdom Atomic Energy Authority’s (UKAEA) Culham Campus began in 2023 and is expected to be commissioned in 2026 and fully operational by early 2027.

Key customers and partnerships

In June 2021, General Fusion partnered with the UK Atomic Energy Authority (UKAEA) to build and operate a fusion demonstration plant (FDP) at UKAEA’s Culham Campus in Oxfordshire, UK. In July 2021, General Fusion partnered with Canadian Nuclear Laboratories, a nuclear technology laboratory managed by the Canadian National Energy Alliance, to develop tritium extraction technologies for fusion power. 

In February 2022, General Fusion, Bruce Power, and the Nuclear Innovation Institute partnered to accelerate the delivery of clean fusion power in Canada. In November 2022, the company partnered with Canadian Nuclear Laboratories again to carry out a series of joint projects to accelerate the deployment of commercial fusion power in Canada.

In October 2023, General Fusion partnered with Kyoto Fusioneering to advance critical systems for MTF commercialization, including the tritium fuel cycle, the liquid metal balance of the plant, and the power conversion cycle. During the same month, General Fusion expanded its partnership with TRIUMF to design diagnostics that will advance the former’s technology and prove the performance of its MTF demonstration, LM26. In December 2023, the company partnered with the University of Lisbon to develop a key diagnostic for MTF technology.

Funding and financials 

In March 2024, General Fusion and TRIUMF, Canada’s particle accelerator centre, received a USD 800,000 Natural Sciences and Engineering Research Council of Canada (NSERC) Alliance grant. The companies intended to use the funds to advance technology to develop an ultra-fast neutron spectrometer system to measure plasma temperatures at fusion conditions of over 100 million degrees Celsius.

In December 2023, General Fusion received CAD 5 million (~USD 3.7 million) from the Strategic Innovation Fund (SIF). The company planned to invest the funds in the research and development of the company’s MTF demonstration, LM26. The company’s latest funding round was in August 2023, when it raised USD 25 million in the first close of its Series F funding round. Participants of the round included existing investors, BDC Capital, and GIC, as well as new grant funding from the government of British Columbia.

In November 2021, the company raised USD 130 million led by Temasek. Previously, in January 2021, General Fusion raised an undisclosed amount from Thistledown Capital, a venture capital firm established by Shopify founder Tobias Lütke.