FUSION | PRIVATE MILESTONES
Funding fusion milestones
Private investment being ploughed into fusion development is yielding results on the road to commercialisation. Will the 2030s see the first fusion power plants?
a proprietary, closed-loop fuel cycle to produce the rare isotope Helium-3 as a byproduct of Deuterium- Deuterium (D-D) fusion reactions. Half of the D-D reactions produce Helium-3 immediately. The other half produces tritium, which Helion stores to let it naturally decay into Helium-3 at a rate of around 5.5% a year. Unlike tokamaks, which depend on achieving steady
state fusion using magnetic confinement fusion (MCF), Helion’s prototypes use pulsed magneto-inertial fusion (MIF). This is a hybrid approach that is designed to combine the strengths of MCF and Inertial Confinement Fusion (ICF). In the Helion devices, a magnetic field is used to thermally insulate and confine a relatively low-density plasma, which is then rapidly compressed by an external driver, such as a metal shell, high-speed plasma jets, or magnetic coils, to reach the extreme temperatures and pressures required for fusion. MIF operates in a cyclic, “pulsed” manner in which the
A graphic showing the first ARC power plan from CFS that will be located Virginia. Source: CFS
A SURGE OF NEW FUSION finance deals and some significant technical breakthroughs suggest that private finance is playing a substantial role in developing new nuclear technology. Among the technical achievements comes Polaris, which its developers say has become the first privately-developed fusion energy machine to demonstrate measurable deuterium-tritium (D-T) fusion and achieve plasma temperatures of 150 million degrees Celsius (Mo The prototype machine, developed by Washington-
C).
based fusion company Helion, set new fusion industry benchmarks on the road to make commercially viable fusion. Significantly, the developments are firsts for the private fusion industry having broken its own commercial fusion industry record for plasma temperatures of 100Mo
C set by its 6th-generation Trenta prototype. Within the fusion industry, 100m o C
is considered the threshold plasma temperature for a commercially relevant fusion machine. Helion began operating its 7th-generation Polaris
prototype at the end of 2024. The machine was used for extensive test campaigns and consistently exceeded the performance of the Trenta prototype. In January this year Polaris switched to a D-T fuel mix and publicly announced the 100Mo
C results after they were reviewed
by external experts from the US Department of Energy (DOE) and the University of Michigan. Now with the 150Mo
C threshold breached, the company will continue
testing to reach optimal temperatures for a deuterium- helium-3 (DH3) fuel that it plans to use for commercial operations. Helion will also continue to increase plasma temperatures in Polaris to demonstrate that it can reliably operate with D-H3. Helion is developing
30 | March 2026 |
www.neimagazine.com
plasma is initially held in place by a “seed” magnetic field before the compression phase amplifies the internal magnetic field and heats the fuel to millions of degrees. The resulting fusion reaction causes the plasma to expand, pushing back against the magnetic field. This change in magnetic flux can induce an electric current that is directly captured as electricity, skipping the need for traditional steam turbines. Commenting on the new record David Kirtley, co-
founder and CEO of Helion, said: “We’ve built and operated seven prototypes, setting and exceeding more ambitious technical and engineering goals each time. The historic results from our deuterium-tritium testing campaign on Polaris validate our approach to developing high power fusion and the excellence of our engineering.” In July 2025, Helion broke ground on the site of the 50 MW Orion plant, its first commercial machine, in Malaga, Washington state, which is intended to deliver electricity from fusion to the grid for Microsoft by 2028. Later the same year Helion also began installing assembly line equipment at its new manufacturing factory, Omega. It is designed to transition Helion from a research-focused start-up to a large-scale industrial manufacturer by mass-producing the thousands of high-voltage pulsed capacitors that act as the drivers for Helion’s fusion machines. This facility will produce the approximately 2500 capacitors needed for the Orion power plant using advanced robotic assembly lines, including off-the-shelf and custom automation technology. As of early 2026, Omega had become an active production site with the start of equipment installation. High-volume production is expected to ramp up throughout this year and is being designed to
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45
