Helion Energy is expanding its semiconductor research and manufacturing operations as the fusion startup works to develop a new generation of power technology for its planned commercial fusion plant. The Everett, Washington-based company has signed a letter of intent with the U.S. Department of Commerce for up to $175 million in federal funding, alongside $50 million in private investment, to develop high-voltage semiconductors and advanced power modules designed specifically for fusion energy systems. The initiative could help Helion improve the efficiency of its reactors while strengthening domestic manufacturing capabilities for specialized semiconductor technology.
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The announcement comes as Helion pursues one of the energy industry's most ambitious goals: bringing commercial fusion electricity to the grid. The company is constructing its Orion power plant in Malaga, Washington, under an agreement to supply electricity to Microsoft. Helion's current target is to begin initial operations in 2028, although the company has faced questions about whether it can deliver meaningful electricity generation on that timeline. Its new semiconductor program represents a parallel effort to solve some of the engineering challenges involved in turning fusion reactions into a commercially useful source of power.
The funding is part of a broader $389 million research and development package announced by the Commerce Department for four companies working on power semiconductors and critical materials. The money comes through the CHIPS Research and Development Office. Under the proposed Helion agreement, the federal government would receive a minority, non-controlling, non-voting equity stake in the company. The arrangement remains subject to finalization, so the full $175 million should be understood as a potential award rather than funding that has already been completely disbursed.
Helion plans to contribute $50 million of private investment to the semiconductor initiative, bringing the announced public and private funding associated with the effort to as much as $225 million. More than $100 million is expected to support research and development at Helion's facilities in Everett, focusing on next-generation high-voltage semiconductors and advanced packaging. Approximately $80 million is earmarked for semiconductor development conducted in partnership with GlobalFoundries, a major chip manufacturer with operations in the United States and other countries.
The initiative is significant because semiconductors are not only essential to computers and AI accelerators. They are also critical components in sophisticated power systems that must rapidly control large electrical currents, manage energy transfers, and operate reliably under demanding conditions. Helion's fusion machines rely on powerful electrical pulses to form and compress plasma, the extremely hot, electrically charged gas in which fusion reactions occur. Specialized semiconductor devices help control those pulses and recover electrical energy from the system, making their efficiency a potentially important factor in the performance of a future power plant.
The custom chips are intended to address a specific challenge in Helion's approach to fusion: controlling the electrical systems that drive the reaction and recovering as much of the resulting energy as possible. Unlike many fusion designs that capture heat and use it to produce steam that turns a turbine, Helion aims to convert energy directly into electricity through electromagnetic induction. As expanding plasma pushes against magnetic fields surrounding the reactor, the system is designed to capture electrical energy in surrounding coils. The approach could reduce the need for conventional steam-cycle equipment, but its commercial viability depends on demonstrating that the complete system can generate more usable electricity than it consumes.
High-voltage semiconductors are central to that ambition. These devices control electrical energy at high voltages while minimizing losses and avoiding breakdown under demanding operating conditions. Better-performing chips could help Helion deliver the powerful pulses required by its reactors more efficiently and improve the electronics used to recover electricity afterward. The company's objective is not simply to manufacture chips for their own sake, but to develop components tailored to the operating requirements of its fusion systems.
Advanced packaging is another important part of the project. Rather than treating each semiconductor as an isolated component, advanced packaging integrates multiple devices into modules that can work together. In high-power applications, this can help engineers manage electrical performance, thermal demands, and the physical connections between components. For Helion, improvements at the component and module levels could support more compact, efficient, and scalable power systems if the underlying fusion technology performs as intended.
The partnership with GlobalFoundries could also help connect Helion's research program to established semiconductor manufacturing capabilities. Developing a promising chip in a laboratory is different from producing it consistently at scale. Manufacturing requires reliable processes, quality controls, specialized equipment, and a supply chain capable of meeting the needs of commercial deployment. By working with an established chipmaker, Helion hopes to advance both semiconductor development and the domestic manufacturing capacity required to support future fusion plants.
The effort also has an economic dimension. Helion expects the work in Everett to create more than 100 jobs, including positions for semiconductor engineers, materials scientists, technicians, and manufacturing specialists. The program could expand the company's role from fusion reactor development into specialized power electronics, building expertise in an area that is increasingly important to the energy sector. High-performance power semiconductors are used in a range of applications, including electric vehicles, industrial equipment, renewable energy systems, and AI data centers.
The federal government's participation reflects a broader effort to strengthen domestic semiconductor supply chains and support technologies considered strategically important to American industry. The CHIPS and Science Act established funding for semiconductor manufacturing, research, and related activities, and the latest awards extend that investment into specialized power electronics and critical materials. Alongside Helion, the new package includes support for Commonwealth Fusion Systems, Vertical Semiconductor, and Sibelco North America.
For the government, the arrangement offers a way to support research that could have applications beyond one company while receiving an equity interest rather than providing funding without any ownership stake. For Helion, the proposed award would help finance research and manufacturing efforts that might otherwise compete with the company's substantial spending on reactor development and plant construction. The final value and terms of the agreement will determine how much funding is ultimately available and what obligations Helion must meet.
The semiconductor announcement arrives as Helion continues work on Orion, its first planned commercial fusion power plant. Located in Malaga, Washington, the facility is intended to supply electricity under a power purchase agreement with Microsoft that was announced in 2023. The agreement calls for a plant designed to provide at least 50 megawatts of electricity after an initial ramp-up period. Microsoft is interested in securing additional sources of reliable electricity as demand grows from cloud computing, AI services, and data centers.
However, Helion's timeline requires careful interpretation. The company currently describes Orion as targeting initial operations in 2028, but that does not necessarily mean it will reach full output or consistently deliver 50 megawatts that year. Reporting by Axios in September cited a Helion representative saying the facility would not reach full 50-megawatt operation in 2028, while Reuters has noted that Helion may face a later timeline for delivering meaningful commercial power. The distinction between initial operations, grid connection, and sustained power generation is important when assessing the project's progress.
There are also unresolved scientific and engineering questions. No fusion company has yet demonstrated a commercial power plant that consistently produces more electricity than the complete system consumes. Helion has reported progress with its experimental machines and argues that its direct electricity-recovery approach can improve the overall energy balance. Some outside researchers, however, have questioned whether the company's assumptions about plasma behavior and energy recovery will hold up in a commercial reactor. Those questions will ultimately have to be answered through experimental results and real-world performance rather than investment commitments alone.
Helion has attracted substantial financial backing despite those uncertainties. In June 2026, the company announced a $465 million Series G funding round led by Thrive Capital at a post-money valuation of $15.5 billion. It later expanded that round to $500 million, bringing its total investment raised to more than $1.5 billion. The additional semiconductor funding would support a separate but related part of its commercial strategy: building the specialized hardware needed to operate future fusion plants more efficiently.
For Microsoft and other major electricity consumers, the attraction of fusion is the possibility of abundant, low-carbon power that can operate independently of weather conditions. Solar and wind can provide large amounts of clean electricity, but their output varies, requiring storage, transmission, or other generation sources to maintain reliable supply. A commercially successful fusion plant could eventually provide another option for meeting continuous demand. Yet companies planning their electricity supply cannot treat a future fusion facility as equivalent to an established power plant until its technology, reliability, and operating economics have been demonstrated.
Helion's semiconductor program therefore addresses a practical part of a much larger challenge. Better chips could improve electrical efficiency, strengthen domestic manufacturing, and help the company scale its equipment. But they cannot by themselves prove that the fusion reaction will generate enough net energy or that the complete plant can operate economically. The technology must succeed across multiple interconnected systems, from plasma physics and magnetic compression to power electronics, component durability, and grid integration.
The next milestones to watch include the finalization of the federal funding agreement, progress in semiconductor research and manufacturing, the integration of new components into Helion's systems, and Orion's construction and commissioning schedule. Evidence that the new electronics improve performance would be valuable, but the most consequential result would be a functioning plant that can reliably deliver net electricity.
Helion's proposed $225 million public-private semiconductor initiative illustrates how the race to commercialize fusion is expanding beyond reactors themselves. The effort brings together federal support, private capital, semiconductor manufacturing, and energy technology in an attempt to overcome some of the engineering barriers to commercial fusion. If successful, it could strengthen Helion's technology and contribute to a broader domestic power-electronics supply chain.
For now, the funding represents a significant investment in the infrastructure behind Helion's ambitions—not proof that commercial fusion has arrived. The company must still demonstrate that its reactor technology can deliver reliable, economically viable electricity on a timetable that satisfies customers such as Microsoft. Its semiconductor work may help close that gap, but the decisive test will be the performance of the complete fusion power plant.