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Science
31 July 2025

Helion Begins Work On Fusion Plant Powering Microsoft

Helion Energy advances toward commercial fusion with first power plant in Washington set to supply Microsoft data centers by 2028 amid growing industry momentum

In a bold stride toward the future of clean energy, Helion Energy, a nuclear fusion startup, has initiated construction on its first power plant, named Orion, in Chelan County, Washington. This development marks a significant milestone in the quest to harness fusion power for commercial use, with the company projecting the plant could be operational as early as 2028. The Orion facility is slated to supply electricity to Microsoft data centers, following a groundbreaking power purchase agreement announced in May 2023 — believed to be the fusion industry’s first commercial deal.

Nuclear fusion, the process that powers the sun and stars, involves combining two atoms to form a single atom, releasing a tremendous amount of energy due to the mass difference. Unlike nuclear fission, which splits heavy atoms and is currently used in nuclear reactors, fusion fuses light atoms such as hydrogen isotopes, producing helium and vast energy with minimal radioactive waste and no greenhouse gas emissions. This process offers the promise of nearly limitless, carbon-free, and safe power, making it an attractive solution to global energy and climate challenges.

Helion Energy’s approach to fusion is magneto-inertial fusion (MIF), where plasmas are generated at both ends of the device and then accelerated by magnets into a compression chamber. There, the plasmas combine and compress to fusion conditions, directly recapturing electricity in the process. The company’s prototype, Polaris, housed in Everett, Washington, is currently being developed to reliably produce energy. Previously, with its Trenta prototype, Helion became the first private company to achieve a fuel temperature of 100 million degrees Celsius — a critical benchmark for commercial fusion power plants.

The choice of Chelan County for the Orion plant was strategic, with the site leased from the Chelan County Public Utilities District (PUD) due to its ready access to transmission infrastructure. Helion is actively collaborating with local and state regulators to secure the necessary siting and permitting approvals, underscoring the complex regulatory landscape fusion technology must navigate.

While Helion’s ambitious timeline challenges the long-held skepticism that fusion power remains decades away, the broader fusion industry is indeed on the cusp of transformation. As of 2025, several major private-sector players are racing to achieve net energy gain from fusion reactions. The U.S. Department of Energy’s 2022 milestone at the National Ignition Facility (NIF) marked a scientific breakthrough, but the journey from experimental success to commercial power generation remains substantial.

Between 2025 and 2030, the fusion sector expects a wave of demonstration and limited pilot plants coming online. Helion’s promise to deliver fusion-generated electricity to Microsoft by 2028, backed by OpenAI’s Sam Altman, exemplifies this shift toward commercialization. Other companies like Commonwealth Fusion Systems plan to operate their SPARC fusion prototype by 2026, aiming for net-positive energy, followed by the ARC pilot plant in the early 2030s. TAE Technologies and others continue to explore alternative fusion fuels and plasma control techniques, broadening the technological landscape.

Despite these advances, the immediate impact on daily life remains minimal. Fusion power will initially serve niche applications, such as powering tech campuses, military installations, research facilities, and industrial complexes. This phase, spanning 2030 to 2040, will focus on proving reliability, cost-effectiveness, and scalability. Fusion-generated electricity might be used for energy-intensive tasks like hydrogen production, desalination, data centers, and clean manufacturing of steel and cement.

Looking further ahead, between 2040 and 2050, fusion reactors could be integrated into national power grids, providing stable, 24/7 electricity to meet growing global demand while reducing reliance on fossil fuels. Modular fusion reactors may enable localized generation in urban and remote areas, potentially lowering electricity prices, reducing outages, and improving air quality. Consumers might not directly notice fusion’s presence in their daily power usage but will benefit from its clean and stable supply.

Beyond 2050, fusion energy has the potential to become a mainstream, standard energy source worldwide. Compact and modular reactors could help developing nations bridge the energy divide, supporting net-zero shipping and aviation through fusion-powered hydrogen production. Entire cities and regions might be designed around fusion energy hubs, and the technology could play a vital role in powering deep-space missions, orbital stations, and lunar colonies.

However, several hurdles remain that could delay fusion’s arrival. Maintaining stable plasma at extreme temperatures without damaging reactor materials is a formidable scientific challenge. The high costs of building reactors and infrastructure, regulatory uncertainties requiring new safety codes and grid standards, manufacturing scale-up, and a limited skilled workforce all pose significant obstacles. Even minor setbacks in these areas could push timelines back by five to ten years.

Fusion’s promise extends beyond energy production; it addresses two of the 21st century’s most pressing challenges: climate change and energy security. By providing abundant, emissions-free electricity, fusion could drastically reduce global carbon footprints. Its reliance on abundant, globally available fuels like deuterium and lithium means it is less vulnerable to geopolitical tensions tied to oil and gas resources. Nations leading in fusion technology could reshape global energy markets, transitioning from petrostates to fusion-tech leaders, with potential economic benefits from exporting reactors or licensing technology.

Helion Energy’s progress, particularly with Orion, symbolizes the accelerating momentum in fusion research and commercialization. While the technology won’t revolutionize daily life overnight, the next 10 to 25 years could see fusion evolve from a scientific aspiration to a foundational pillar of modern civilization. From powering data centers to enabling clean industrial processes and eventually supplying homes and cities, fusion’s impact promises to be profound.

For now, the world watches with cautious optimism as fusion edges closer to becoming a reality. The path is complex and challenging, but the potential rewards — a cleaner, safer, and more resilient energy future — are well worth the pursuit.