Salary Range: 110000 to 185000 (Currency: USD) (Pay period: per-year-salary)
Commonwealth Fusion Systems builds fusion energy systems that use high-temperature superconducting magnets to confine plasma in tokamaks, making smaller and less expensive machines. Their SPARC project aims to produce net energy from fusion, with ARC envisioned as the first commercial fusion power plant. They sell these fusion systems to energy providers and industries that need lots of power, generating revenue from system sales. Their goal is to deliver cost-competitive, clean fusion energy to help reduce climate change, pursuing a practical, data-driven path in collaboration with MIT.
Company Size
1,001-5,000
Company Stage
Grant
Total Funding
$4B
Headquarters
Harvard, Massachusetts
Founded
2018
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Commonwealth Fusion Systems (CFS) will receive $85 million from the US Department of Commerce to develop advanced chips for fusion power. The CHIPS Act award also gives the government a stake in the company. CFS plans to turn on its Sparc demonstration reactor next year. Building commercial plants will require more durable power electronics and a stronger supply chain. The money will fund five initiatives. They include silicon carbide power electronics, next-generation radio-frequency power generators for heating fusion fuel, and radiation-hardened electronics that could extend equipment life and cut operating costs. CFS also plans to adapt AI hardware such as GPUs and TPUs for power plants. "Ultimately, that means a more capable, economical power plant and a stronger US supply chain to build it," said co-founder and chief science officer Brandon Sorbom.
Second round of Genesis Mission selections includes 12 Phase II awards. Fermilab engineer Yash Saxena holds a custom circuit board designed to measure chip performance in cryogenic environments. (Photo: JJ Starr, Fermilab) The Department of Energy has announced the selection of 12 new Phase II awards and six new Phase I awards through its Genesis Mission, including projects related to fusion energy and high-radiation environments. In July, the DOE announced the selection of 278 projects under the Genesis Mission, most of which were Phase I projects. Phase II awards are intended to scale up and expand projects that have already demonstrated potential for transformative scientific capability through multi-year funding. Extreme environments: Nhan Tran, a Wilson Fellow at Fermilab, is leading a Phase II project titled "AXESS: Accelerating Extreme Environment Specs-to-Silicon." It aims to accelerate the development of rugged, high-performance microchips capable of operating in extreme conditions including space, ultra-cold environments, and high-radiation settings such as fusion machines. According to Fermilab, the research team is building a framework that uses AI to speed up the chip-design process, dramatically reducing the time from chip specification to fabrication from months to weeks. It is intended to help designers make decisions throughout what is typically a multistage process that relies on slow, manually operated tools. For electronics operating in extreme environments, this can require years of specialized work. "Particle detectors must function in some of the most extreme environments in terms of radiation, cryogenic temperatures, and speed," said Tran. "As a result, we've built our own custom detectors for many years, and Fermilab has established deep expertise in microelectronics for extreme environments. More recently, we've developed tools and methods used across the community to integrate AI onto chips. All of this coming together within the Genesis Mission is a great opportunity for Fermilab to team up with others and use AI to significantly accelerate chip design." University partners include Arizona State University, Georgia Institute of Technology, Massachusetts Institute of Technology, Purdue University, the University of California San Diego, and the University of Southern California. Among the other collaborators are Lawrence Berkeley, Oak Ridge, and Sandia National Laboratories; SLAC National Accelerator Laboratory; and industry partners, including Advanced Micro Devices, Dataerai, IBM, and Siemens EDA. "Siemens is putting industrial-grade hardware design solutions behind the Genesis Mission," said David Burnette, engineering director for catapult high-level synthesis at Siemens Digital Industries Software. "By uniting Siemens's proven technologies with the breakthrough science at Fermilab and across the DOE labs, we're accelerating a new class of chips for quantum, fusion, and high-radiation environments - at a speed and scale the nation has never had." FRIB operations: Ayan Paul, a research associate professor at Northeastern University in Boston, Mass., is leading a Phase II project titled "Agentic Assistance for Advanced Rare Isotope Separator (ARIS) Operations at the Facility for Rare Isotope Beams (FRIB): Planning, Beam Tuning, Calibration, Monitoring, and Knowledge Harvesting." It will develop an agentic AI system to safely streamline the operation and tuning of the FRIB particle separator. According to Paul, weekly beam development at FRIB takes 16-24 hours, about half of which goes to manual isotope calibration. This project aims to develop three sets of AI agents to assist FRIB staff and users in planning experiments, tuning the machine, and monitoring the system. "If the project targets are met, the team projects 500 additional hours of beam time for science at FRIB each year, corresponding to several more experiments," the project abstract states. Michigan State University, where FRIB is located, and Gravitate AI are partners on this project. Fusion digital twin: Thomas Looby at Commonwealth Fusion Systems is leading a Phase II project titled "Accelerating the Path to Commercial Fusion Energy via an AI-Enabled Digital Twin Platform for SPARC." It aims to build a digital twin to simulate and optimize operations of a fusion demonstration device. CFS is a participant in the DOE Milestone Program currently developing SPARC, its tokamak prototype, and this project aims to use DOE supercomputers to process fusion data, strengthen AI tools, and advance digital twin visualization work that previously was started by CFS, Nvidia, and Siemens for SPARC. This work is expected to support and accelerate tokamak operations by creating, sustaining, and optimizing fusion plasma scenarios between experimental pulses and connect plasma behavior with lifetime performance models of plasma-facing components. While several fusion companies were selected to lead Phase I projects in the first round of Genesis Mission selections, CFS is the only private company leading a project in this second round. Collaborators include ORNL, Lawrence Livermore National Laboratory, Princeton Plasma Physics Laboratory, SLAC, MIT, Carnegie Mellon University, Ansys, General Atomics/DIII-D, Google DeepMind, and Nvidia. CFS cofounder and chief science officer Brandon Sorbom said that the project "will convert decades of R&D performed across the U.S. fusion community into tools that can be applied to accelerate SPARC operations. Together, our team of public and private leaders in AI and fusion will be able to unify and apply decades of U.S. research and tackle some of the fusion industry's biggest challenges." Waste processing: Kevin Brown, a research professor at Vanderbilt University, is leading a Phase I project titled "WasteChemAI: Chemical Speciation and Partitioning AI Framework for DOE Waste Processing and Disposal Optimization," which focuses on optimizing the chemical processing of nuclear waste. "Chemical processing for nuclear waste management and long-term demonstration of environmental safety requires detailed understanding of the behavior of chemical species and radionuclides under a range of process and environmental conditions," Brown said. "The WasteChemAI project will use machine learning and artificial intelligence to dramatically accelerate the engineering evaluation processes and provide more reliable information along with quantified uncertainty."
Commonwealth Fusion Systems places largest single purchase order of HTS tape with Fujikura to accelerate development of ARC power plants. Sep 30, 2026, 00:01 ET * As part of the long-term supply agreement, Fujikura is investing in the expansion of its manufacturing capacity to provide more than 10,000 km (3 GA-m) of HighTemperature Superconducting (HTS) tape to support the commercial rollout of CFS' ARC power plants. * The agreement is the largest of its kind for HTS tape, a key milestone for the ARC power plant supply chain. DEVENS, Mass. and TOKYO, Sept. 30, 2026 /PRNewswire/ - Commonwealth Fusion Systems (CFS), the global leader in fusion energy, today announced a landmark supply agreement with Fujikura Ltd. as it accelerates the commercial rollout of ARC fusion power plants. CFS agreed to purchase more than 10,000 km (3 GA-m) of high-temperature superconducting (HTS) tape from Fujikura that the company will use in the development of its ARC power plants, starting with the first grid-scale plant being developed at the Fall Line Fusion Power Station in Chesterfield County, Virginia. Fujikura is investing in the expansion of its manufacturing capacity to enable the delivery of the HTS tape at scale. The agreement is the largest of its kind for HTS tape. "This partnership with Fujikura demonstrates how we're actively placing orders and getting ready to execute our ARC power plant once our SPARC fusion machine achieves Q>1," said Bob Mumgaard, CEO and Co-founder of Commonwealth Fusion Systems. "We're pleased to find partners like Fujikura that understand our manufacturing priorities, share our sense of urgency, and are willing to make the investments necessary to help us scale so that together we can meet future demand for this crucial energy source worldwide." The supply agreement is a major milestone toward the construction of ARC power plants and will help to strengthen the industrial supply chain essential to bring commercial fusion power to market. It also marks an important step in U.S.-Japan collaboration and in building the industrial ecosystem needed to support commercial fusion energy. "With this agreement, Fujikura will continue to strengthen its position as a key supplier of HTS tape for ARC power plants while building a long-term business platform for the 2030s and beyond, when commercial fusion power plants are expected to begin operation," said Naoki Okada, Representative Director, President and CEO of Fujikura Ltd. "Through these efforts, Fujikura aims to help support a sustainable energy future." About Commonwealth Fusion Systems Commonwealth Fusion Systems is the world's largest and leading private fusion company. The company's marquee fusion project, SPARC, will generate net energy, paving the way for limitless carbon-free energy. The company has raised $4 billion in capital since it was founded in 2018. SPARC(R), ARC(TM), and Fall Line(TM) Fusion Power Station are trademarks of Commonwealth Fusion Systems(R). About Fujikura Fujikura Ltd., founded in 1885, is a global technology company with more than 100 group companies worldwide. Building on over a century of expertise in connectivity technologies, Fujikura provides advanced solutions for optical communications, electronics, and automotive applications. Today, the company supports the rapid expansion of digital infrastructure and contributes to the development of next-generation energy technologies, including fusion energy. About Fusion Energy Fusion energy is released when light atomic nuclei, such as deuterium and tritium, fuse to form another nucleus, such as helium, in a reaction similar to the one that powers the sun. One gram of fusion fuel is estimated to produce energy equivalent to burning approximately eight metric tons of oil. Fusion is attracting growing attention because it is considered the "holy grail" of energy production. It is an "always on" power source that has no emissions, is scalable, safe, and can be sited essentially anywhere. The fuel can be sourced from seawater, making it essentially unlimited and easily accessible - meaning fusion can provide permanent energy security as well. Fusion power plants that use magnetic confinement require extremely strong magnetic fields to hold plasma at temperatures of about 100 million degrees Celsius. Fujikura's HTS tape combines high current-carrying performance with high mechanical strength in intense magnetic fields, making it suitable for the powerful superconducting magnets used to confine and control the plasma. By enabling stronger magnetic fields, HTS magnets can help make fusion power plants compact, which is expected to reduce the capital costs and make commercial fusion power plants more affordable and easier to build. Fujikura has already supported CFS' research and development by supplying HTS tape. *1 High-temperature superconductors (HTS) Fujikura's HTS is based on its proprietary IBAD (Ion Beam Assisted Deposition) process, developed in 1991. It exhibits zero electrical resistance even at liquid-nitrogen temperature (−196°C) and can carry large currents despite its small cross-section. Because it maintains a high critical current even in high magnetic fields, it is an essential material for realizing compact, high-field fusion energy reactors. *2 Magnetic-confinement (tokamak) approach A torus-shaped fusion energy device that uses a strong magnetic field to confine ultra-high temperature plasma. The strong magnetic fields are generated by toroidal field coils, poloidal field coils, and a central solenoid coil, all of which use high-temperature superconductors. For Commonwealth Fusion Systems: Christine Dunn, [email protected] SOURCE Commonwealth Fusion Systems
Commonwealth Fusion Systems places largest single purchase order of HTS tape with Fujikura to accelerate development of ARC power plants. Sep 30, 2026, 12:01 AM ET * As part of the long-term supply agreement, Fujikura is investing in the expansion of its manufacturing capacity to provide more than 10,000 km (3 GA-m) of HighTemperature Superconducting (HTS) tape to support the commercial rollout of CFS' ARC power plants. * The agreement is the largest of its kind for HTS tape, a key milestone for the ARC power plant supply chain. DEVENS, Mass. and TOKYO, Sept. 30, 2026 /PRNewswire/ - Commonwealth Fusion Systems (CFS), the global leader in fusion energy, today announced a landmark supply agreement with Fujikura Ltd. as it accelerates the commercial rollout of ARC fusion power plants. CFS agreed to purchase more than 10,000 km (3 GA-m) of high-temperature superconducting (HTS) tape from Fujikura that the company will use in the development of its ARC power plants, starting with the first grid-scale plant being developed at the Fall Line Fusion Power Station in Chesterfield County, Virginia. Fujikura is investing in the expansion of its manufacturing capacity to enable the delivery of the HTS tape at scale. The agreement is the largest of its kind for HTS tape. "This partnership with Fujikura demonstrates how we're actively placing orders and getting ready to execute our ARC power plant once our SPARC fusion machine achieves Q>1," said Bob Mumgaard, CEO and Co-founder of Commonwealth Fusion Systems. "We're pleased to find partners like Fujikura that understand our manufacturing priorities, share our sense of urgency, and are willing to make the investments necessary to help us scale so that together we can meet future demand for this crucial energy source worldwide." The supply agreement is a major milestone toward the construction of ARC power plants and will help to strengthen the industrial supply chain essential to bring commercial fusion power to market. It also marks an important step in U.S.-Japan collaboration and in building the industrial ecosystem needed to support commercial fusion energy. "With this agreement, Fujikura will continue to strengthen its position as a key supplier of HTS tape for ARC power plants while building a long-term business platform for the 2030s and beyond, when commercial fusion power plants are expected to begin operation," said Naoki Okada, Representative Director, President and CEO of Fujikura Ltd. "Through these efforts, Fujikura aims to help support a sustainable energy future." About Commonwealth Fusion Systems Commonwealth Fusion Systems is the world's largest and leading private fusion company. The company's marquee fusion project, SPARC, will generate net energy, paving the way for limitless carbon-free energy. The company has raised $4 billion in capital since it was founded in 2018. SPARC(R), ARC(TM), and Fall Line(TM) Fusion Power Station are trademarks of Commonwealth Fusion Systems(R). About Fujikura Fujikura Ltd., founded in 1885, is a global technology company with more than 100 group companies worldwide. Building on over a century of expertise in connectivity technologies, Fujikura provides advanced solutions for optical communications, electronics, and automotive applications. Today, the company supports the rapid expansion of digital infrastructure and contributes to the development of next-generation energy technologies, including fusion energy. About Fusion Energy Fusion energy is released when light atomic nuclei, such as deuterium and tritium, fuse to form another nucleus, such as helium, in a reaction similar to the one that powers the sun. One gram of fusion fuel is estimated to produce energy equivalent to burning approximately eight metric tons of oil. Fusion is attracting growing attention because it is considered the "holy grail" of energy production. It is an "always on" power source that has no emissions, is scalable, safe, and can be sited essentially anywhere. The fuel can be sourced from seawater, making it essentially unlimited and easily accessible - meaning fusion can provide permanent energy security as well. Fusion power plants that use magnetic confinement require extremely strong magnetic fields to hold plasma at temperatures of about 100 million degrees Celsius. Fujikura's HTS tape combines high current-carrying performance with high mechanical strength in intense magnetic fields, making it suitable for the powerful superconducting magnets used to confine and control the plasma. By enabling stronger magnetic fields, HTS magnets can help make fusion power plants compact, which is expected to reduce the capital costs and make commercial fusion power plants more affordable and easier to build. Fujikura has already supported CFS' research and development by supplying HTS tape. *1 High-temperature superconductors (HTS) Fujikura's HTS is based on its proprietary IBAD (Ion Beam Assisted Deposition) process, developed in 1991. It exhibits zero electrical resistance even at liquid-nitrogen temperature (−196°C) and can carry large currents despite its small cross-section. Because it maintains a high critical current even in high magnetic fields, it is an essential material for realizing compact, high-field fusion energy reactors. *2 Magnetic-confinement (tokamak) approach A torus-shaped fusion energy device that uses a strong magnetic field to confine ultra-high temperature plasma. The strong magnetic fields are generated by toroidal field coils, poloidal field coils, and a central solenoid coil, all of which use high-temperature superconductors. For Commonwealth Fusion Systems: Christine Dunn, [email protected] SOURCE Commonwealth Fusion Systems NOTE: This content is not written by or endorsed by "WOWK", its advertisers, or Nexstar Media Inc.
Commonwealth Fusion Systems' Brandon Sorbom and Helion's David Kirtley on bringing fusion to the grid at TechCrunch Disrupt 2026. CFS' Brandon Sorbom and Helion's David Kirtley join the Smart Systems Stage at TechCrunch Disrupt 2026 to discuss the breakthroughs moving fusion forw For decades, commercial fusion power has seemed perpetually out of reach. Now two companies are building toward something much more concrete: putting fusion-generated electricity on the grid. Commonwealth Fusion Systems (CFS) is building SPARC, a demonstration fusion machine intended to pave the way for its first commercial power plant, ARC. Helion is developing Orion, a 50-megawatt fusion power plant intended to supply electricity to Microsoft beginning in 2028. At **TechCrunch Disrupt 2026**, CFS co-founder and chief science officer Brandon Sorbom and Helion founder and CEO David Kirtley will take the **Smart Systems Stage for "Bringing Fusion to the Grid."** They'll discuss the breakthroughs moving fusion forward, the challenges that remain, and what it will take to deliver fusion power to the grid at scale. Want to hear what stands between today's fusion breakthroughs and commercial power? **Grab your pass and bring your co-founder, partner, or peer for 50% off their pass.** Discover the insights shaping the future of fusion, together. Moving fusion from science to commercial power. Sorbom co-founded CFS in 2018 with the goal of commercializing fusion energy in time to help combat climate change. As chief science officer, he leads the company's scientific direction and R&D and helps advance the design of ARC. The idea has roots in his work at MIT, where Sorbom was lead author of the paper proposing the original ARC design while earning his Ph.D. in nuclear science and engineering. Today, CFS is working toward ARC through SPARC, the company's demonstration fusion machine. In April, CFS became the first fusion company to apply to PJM Interconnection, the largest U.S. wholesale electricity market - a necessary step toward eventually connecting ARC to the grid. In July, the company raised another $1 billion, bringing its total funding to $4 billion. For founders and technology leaders, Sorbom brings a perspective that spans the journey from academic research to designing a commercial fusion power plant, and the scientific and engineering challenges that have to be solved along the way. How do you turn decades of fusion research into commercial power? **Secure your Disrupt pass and grab a second at 50% off** to hear from one of the scientists working to make that transition. Putting fusion power to the test. Kirtley founded Helion to develop fusion technology that could ultimately deliver electricity at commercial scale. An NSF and NASA Advanced Concepts Fellow, he has expertise in high-Beta plasmas for energy and space propulsion applications and today leads Helion as it works toward commercial fusion power. In February, Helion announced that its Polaris prototype had heated plasma to 150 million degrees Celsius. The company is now developing Orion, a 50-megawatt fusion power plant intended to supply electricity to Microsoft as early as 2028. In June, Helion announced a key regulatory milestone on the path to building and operating the plant. Its Series G funding round, initially announced at $465 million in June, closed at $500 million in September. That timeline puts the questions at the heart of the Disrupt session into sharp focus. Scientific milestones matter, but commercial fusion also has to make the leap to a functioning power plant capable of reliably delivering electricity to customers. What will it take to turn fusion milestones into electricity on the grid? **Register for Disrupt and bring someone with you at 50% off** to hear Kirtley's perspective on the work still ahead. Learn what still stands between fusion and the grid at Disrupt 2026. CFS and Helion are pursuing different approaches to fusion, but both are confronting the challenge at the center of this session: moving from scientific and engineering progress to commercial power. At Disrupt, Sorbom and Kirtley will bring firsthand experience building companies around that transition. For founders, investors, and technology leaders, their conversation offers a chance to hear what is moving fusion closer to commercialization, which challenges remain, and what it will take to bring fusion power to the grid at scale. Their session is one of **200+ sessions** across six industry stages, roundtables and breakouts at Disrupt, October 13-15 at Moscone West in San Francisco. More than 10,000 founders, investors, operators and tech leaders are expected, along with **250+ speakers** and **300+ exhibiting startups**. Beyond the agenda, matchmaking, dealmaking and networking create opportunities to connect with the founders, investors and builders shaping what comes next. Fusion has spent decades as the energy technology of the future. Hear from two leaders working to bring it closer to the grid. These are the final days to **grab your pass and get a second of the same type at 50% off.**