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Backing Commonwealth Fusion Systems: The Future of Energy

Commonwealth Fusion Systems

Why We Invested in Commonwealth Fusion Systems

As we continue to deepen our focus on the high-performance computing infrastructure stack, one truth has become undeniable: at the foundation of every technological breakthrough—AI, spatial computing, blockchain, and beyond—is energy. Applications will rise and fall. Paradigms will shift. But the demand for power continues to outpace our ability to generate it.

To support a truly digitized and electrified future, we need a new class of energy technology—one that’s clean, scalable, and unbounded by geography, fuel constraints, or political complexity. That’s why we invested in Commonwealth Fusion Systems (CFS).

The Case for Fusion—Now

Fusion has long been seen as the “holy grail” of energy: a virtually limitless, carbon-free power source that replicates the reaction powering the sun. Unlike traditional nuclear fission, fusion does not produce long-lived radioactive waste, carries no meltdown risk, and draws from fuel sources—deuterium and tritium—that are abundant and globally accessible.

But what makes fusion particularly compelling today is its alignment with the infrastructure needs of tomorrow. As compute demand surges across hyperscalers, industrial AI applications, and digital manufacturing, we must rethink our energy baseline—not just supplement it with renewables.

Fusion is not constrained by geography or access to finite natural resources. It doesn’t require large quantities of rare earths or long global supply chains. Fusion power plants can be built virtually anywhere—providing stable, distributed energy without dependency on sunlight, wind, rainfall, or underground carbon. This unlocks energy sovereignty for regions currently dependent on imports or fossil-intensive grids.

Betting on Fusion’s First Scaled Commercialization

When we first engaged with CFS, several core differentiators stood out:

  • Proven Physics: CFS’s tokamak-based architecture builds on decades of MIT research, unlike many fusion efforts rooted in speculative science.

  • Magnet Breakthroughs: Their proprietary high-temperature superconducting (HTS) magnets allow for dramatically smaller, more efficient power plants.

  • Capital and Momentum: Before this investment round, CFS had already raised over $2B, with a cap table that reflects a rare convergence of top-tier venture, sovereign, strategic, and institutional investors.

  • Vertically Integrated Model: From manufacturing to regulatory strategy, CFS is architected to scale like a next-gen infrastructure company—not just a lab project.

CFS was, and remains, a compelling fit with our thesis: investing in technologies that underpin the infrastructure of tomorrow.

CFS: Turning Decades of Physics into Infrastructure

CFS, spun out of MIT’s Plasma Science and Fusion Center, is turning fusion from theory into scalable infrastructure. They’re not chasing scientific novelty—they’re engineering delivery systems. Their strategy is grounded in three things:

  • Proven Physics: CFS uses a tokamak-based architecture, the most validated fusion design, enhanced by high-temperature superconducting (HTS) magnets that dramatically shrink the reactor footprint and increase efficiency.

  • Hardware Execution: CFS has built the world’s most powerful fusion-relevant magnet and now is building SPARC—the first privately funded net-energy fusion machine.

  • Commercial Roadmap: Their next step, ARC, is a 400MW compact power plant that can be manufactured modularly and deployed at scale, with Google already an early customer for offtake when the first ARC’s power hits the grid in the early 2030s.

A Pivotal Moment

Projections vary, but consensus agrees on one point: global electricity consumption will multiply dramatically by 2050. Some forecasts call for a 3x increase; others see demand growing tenfold. That growth will be driven by AI workloads, industrial electrification, hydrogen production, urbanization, and the digitization of everything from finance to food systems.

The implications are vast—and urgent. Today’s energy mix cannot scale to meet this need without either wrecking the climate or compromising economic growth. CFS offers an answer. Their fusion power plants:

  • Provide 24/7 baseload power

  • Are modular, siting-agnostic, and scalable

  • Deliver cost-competitive electricity

  • Have a pathway to mass deployment

Progress and Momentum

On July 28, CFS published this video. CFS has hit major execution milestones:

  • SPARC assembly is well underway in the Tokamak Hall, with the cryostat base (the machine’s structural foundation) now installed.

  • Critical support buildings around SPARC are being activated, including the utility building.

  • The cryogenic refrigerator (to cool the superconducting magnets) is installed and has begun operations.

  • A suite of advanced diagnostics tools is being installed to capture SPARC plasma data.

  • CFS has developed a global supply chain by adapting suppliers from other industries to meet fusion needs.

  • This ecosystem now reliably supports SPARC construction and is scalable to support ARC.

  • The magnet factory is accelerating:

    • Some processes for SPARC magnets are now completed, proving that CFS can ramp, operate, and fulfill production orders.

  • The first ARC plant will be sited in Virginia, in partnership with Dominion Energy.

  • CFS signed a landmark offtake agreement: Google has purchased 200 MW of ARC fusion power.

    • This is the largest fusion power deal ever signed and a signal of serious market readiness for clean baseload energy.

Alignment with our Thesis

CFS aligns with our view that energy is not a sector—it’s a stack. It is the base layer upon which every other modern system relies. Investing in next-generation energy is not only about powering clean growth—it’s about enabling compute, commerce, and civilization itself to scale. CFS doesn’t just match that vision. They’re building it—plant by plant, magnet by magnet. At Galaxy, we invest in the frontier. CFS isn’t just building a fusion machine—they’re building the backbone of our future energy economy.

Energy is not a sector—it’s the foundation of progress. From AI to electrification, every frontier depends on it. Investing in next-generation energy is how we ensure the future is not just imagined, but built.

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