DEVENS, MA, Jan 7, 2026 – Commonwealth Fusion Systems (CFS) is developing a digital twin of its SPARC fusion machine with NVIDIA and Siemens. The effort uses artificial intelligence (AI) and project management tools to speed up system design, testing, and project execution.
CFS will leverage Siemens Xcelerator portfolio to supply data for a digital twin of its fusion machine. The toolchain includes Designcenter NX for engineering design and Teamcenter PLM tools to manage machine models and assemblies. These digital assets can then be feed into CFS’ modeling and simulation workflows, where the company applies AI-enabled analysis tools.
CFS is building a digital twin of SPARC using NVIDIA Omniverse libraries and OpenUSD. The approach links experimental data with classical and AI-powered physics models. Engineers can run simulations, test hypotheses, and compare machine data with model results in a single environment. Improved analysis and iteration help advance fusion system development.
“CFS will be able to compress years of manual experimentation into weeks of virtual optimization using the digital infrastructure developed by NVIDIA and Siemens,” said Bob Mumgaard, co-founder and CEO of CFS. “Through this collaboration, we’re demonstrating how AI and integrated digital engineering can accelerate progress from design to grid power. This will allow us to transform how we build and operate fusion machines in the race to commercial fusion.”
“Delivering commercial fusion demands that we simulate and solve incredibly complex physics problems,” said Rev Lebaredian, vice president, omniverse and simulation technology, NVIDIA. “By using Siemens NX software and NVIDIA Omniverse libraries to create a high-fidelity digital twin of SPARC, CFS will be able to accelerate its engineering and shorten the timeline to clean power.”
“By connecting Siemens Xcelerator with NVIDIA AI visualization libraries, we’re demonstrating that end-to-end digital workflows aren’t just efficient, they’re transformative,” said Del Costy, president and managing director, Americas, Siemens Digital Industries Software. “Fusion is complex, but data doesn’t lie. When you aggregate real manufacturing intelligence, apply AI, and run thousands of scenarios, you remove guesswork and accelerate innovation. This is the future of industrial engineering.”
Source: CFS
About Commonwealth Fusion Systems
Commonwealth Fusion Systems (CFS) is a U.S.-based fusion energy company developing fusion power systems for electricity generation. Founded in 2018, the company spun out of MIT’s Plasma Science and Fusion Center. It designs and builds fusion machines using high-temperature superconducting magnet technology. Its work targets the energy sector and organizations seeking large-scale, low-carbon electricity sources. CFS conducts research, engineering, and manufacturing activities in the US. The company operates facilities in MA and is developing additional sites, including planned operations in VA. As of the current date, the company employs about 1,000 people worldwide. CFS is headquartered in Devens, MA.
About NVIDIA
NVIDIA, founded in 1993 and headquartered in Santa Clara, CA, designs and manufactures graphics processing units, systems on chips, networking hardware, and AI intelligence software such as CUDA. Its products serve industries including gaming, data centers, autonomous vehicles, professional visualization, robotics, health care, and energy. The company introduced the GPU in 1999 and later expanded into accelerated computing and AI infrastructure. In gaming, its GPUs support high-performance rendering, while in AI and high-performance computing, its systems provide the infrastructure for training and deploying large-scale models. NVIDIA also develops tools for robotics and autonomous driving.
About Siemens Digital Industries Software
Siemens Digital Industries Software, a business unit of Siemens AG, provides industrial software, hardware and related services through the Siemens Xcelerator platform. The company’s portfolio includes product lifecycle management, electronic design automation, simulation and digital twin tools, manufacturing operations management and low-code application development. These products support design, engineering and production workflows across sectors such as aerospace and defense, automotive, electronics and semiconductors, machinery, medical devices and process manufacturing. Siemens Digital Industries Software traces its origins to 1963 as United Computing, later becoming Siemens PLM Software in 2007 before adopting its current name. It supplies technologies that help organizations manage product, process data, and improve development and manufacturing efficiency across a range of industrial applications.