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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11General Fusion announced $25 million in new funding on August 9, 2023, and redirected its next major fusion demonstration effort to British Columbia. The planned machine, Lawson Machine 26 (LM26), was intended to test the company’s magnetized-target-fusion approach before a larger commercial design. LM26 is now assembled and operating, but the company has not demonstrated commercial net electricity or completed the Lawson-criterion milestones needed for a power plant.
What General Fusion announced in 2023
The August 9, 2023 announcement combined financing with a change in development strategy. General Fusion said it had raised $25 million, with existing investors BDC Capital and GIC participating, and that the Government of British Columbia provided a $3.7 million grant, according to GeekWire’s report. GeekWire described the company’s cumulative fundraising at the time as roughly $330 million; the report did not make the currency treatment sufficiently explicit to justify a conversion.
The money was intended to support LM26 at or near General Fusion’s headquarters in British Columbia. The company paused the start of construction on a larger demonstration machine planned for the United Kingdom, delaying that project by about two years while LM26 data could inform a later design. Construction on the U.K. machine had not begun, a correction noted in the updated GeekWire article; it is therefore inaccurate to describe the project as an operating plant or definitively canceled.
How magnetized target fusion works
General Fusion’s method, magnetized target fusion (MTF), starts with a hot plasma that is electrically charged and magnetized. A surrounding liquid-metal or lithium liner is then driven inward mechanically. The compression is intended to increase plasma density and temperature while preserving the magnetic field.
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This differs from a tokamak, which relies primarily on magnetic confinement, and from inertial-confinement experiments that use high-powered lasers. General Fusion says its commercial concept is designed around mechanical compression and a lithium liner, without superconducting magnets or high-powered lasers. Those are company descriptions, not independent assessments, as outlined on its technology site and in its 2026 technical update.
What LM26 was designed to prove
LM26 is described as operating at approximately 50% of the intended commercial machine’s diameter. That comparison refers to diameter, not half the reactor’s volume, output or electricity production.
| Milestone | Meaning | Status |
|---|---|---|
| 1 keV | Approximately 10 million°C | Program target |
| 10 keV | Approximately 100 million°C | Program target; the 2023 announcement’s temperature goal |
| 100% Lawson criterion | Temperature, density and energy-confinement conditions associated with fusion power exceeding plasma heat loss | Future target |
| Commercial electricity | Electricity delivered after accounting for drivers, pumps, conversion losses, maintenance and downtime | Not demonstrated |
The Lawson criterion is not the same as electricity exported to the grid. Even successful plasma breakeven would leave engineering questions about the full machine’s energy balance and operation.
What happened after the funding announcement
| Date | Reported development |
|---|---|
| August 9, 2023 | General Fusion announced the $25 million financing and LM26 plan. Company announcement |
| December 2024 | LM26 assembly completed, according to the company’s program timeline. |
| February 2025 | First plasma reported. |
| April 2025 | First plasma compression reported. |
| June 22, 2026 | General Fusion reported approximately 8.4 million°C, or 0.72 keV, electron temperatures during compression. The result was submitted for peer review and remains subject to replication. |
| July 13, 2026 | The company began trading on Nasdaq as GFUZ after a business combination with Spring Valley Acquisition Corp. III. |
Why the 2026 result matters—and what it does not prove
In its June 2026 release, General Fusion said compression produced more than a threefold increase in electron temperature, roughly tenfold increases in density and poloidal magnetic field from starting values, stable plasma deep into compression, no significant lithium contamination during stable compression, and increased neutron yield. These observations are company-reported and await independent peer-reviewed confirmation.
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The reported 0.72 keV temperature is progress from initial plasma operation, but it is below the program’s 1 keV and 10 keV milestones. A temperature measurement alone does not establish fusion breakeven, net machine energy or a viable power station.
What remains unproven before commercial fusion
- Repeatability: The heating and compression results must be reproduced across shots and operating conditions.
- Temperature progression: LM26 must move from approximately 0.72 keV toward 1 keV and ultimately 10 keV.
- Density and confinement: Plasma must remain dense and confined long enough to meet the required fusion conditions.
- Liner performance: The lithium liner must compress consistently without destabilizing or contaminating the plasma.
- Full energy accounting: The company must account for mechanical drivers, pumps, heating, controls and other plant loads, not just plasma heating.
- Power-plant operation: A commercial system would need useful pulse rates, durable seals and valves, heat extraction, maintenance procedures and competitive economics.
- Licensing and deployment: Any future plant would require a regulatory and grid-integration pathway.
General Fusion’s own program materials identify additional commercial-system engineering, including seals, valves and heat exchangers. The company currently presents completion of its Lawson program by 2028 and a first plant around 2035 as goals, not guaranteed dates.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why move the near-term demonstration to B.C.?
A smaller machine at the company’s home facility can allow faster construction, testing and design iteration while requiring less near-term capital than a larger demonstration system. Results from LM26 can also expose problems before a more commercially representative machine is built.
The trade-off is that a half-diameter demonstration cannot answer every question about a full plant. It may not reveal the stresses of larger components, sustained repetition, heat removal, maintenance or commercial economics. Delaying the U.K. project also postpones a larger-scale demonstration path.
The financing and public-company update
The 2023 $25 million financing is separate from General Fusion’s later capital markets activity. After its July 2026 Nasdaq listing, the company said the transaction provided approximately US$150 million in cash to advance its Lawson program, with key milestones targeted for 2028. The listing announcement is available from General Fusion’s investor-relations site.
For investors, the distinction matters: funding extends the program and can support construction and experiments, but it does not establish that the technology will reach commercial performance or that the stated schedule will be met.
Bottom line: a working demonstration platform, not a power plant
General Fusion’s B.C. strategy has progressed beyond a 2023 proposal. LM26 was assembled, produced first plasma and compression, and generated a company-reported 0.72 keV electron-temperature result by June 2026. The central commercial claim remains future-facing: the machine must still demonstrate higher temperatures, repeatable compression, Lawson-criterion performance and an engineering path to reliable, economical electricity.
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