In a bold leap toward the future of clean energy, Google has signed a groundbreaking deal to purchase 200 megawatts of electricity from a fusion power plant that hasn’t even been built yet. The agreement makes Google the first major corporate buyer of fusion energy, signaling strong confidence in a technology long viewed as the “holy grail” of clean power.

The deal is with Commonwealth Fusion Systems (CFS), a startup born out of MIT that is working to build the world’s first commercial-scale fusion power plant. The plant, named ARC, is slated for construction in Virginia and is expected to deliver 400 megawatts of electricity once operational. If successful, it could provide enough energy to power hundreds of thousands of homes—and, in this case, some of Google’s data centers.

What makes this deal even more striking is that the fusion plant is still in the development phase. Fusion energy, which mimics the process that powers the sun, has only recently reached key scientific milestones. While researchers have managed to achieve brief net-positive energy gains in the lab, no company or government has yet built a functioning fusion plant that continuously delivers electricity to the grid.

Despite this, Google is betting on the long-term payoff. With its growing energy demands—especially from artificial intelligence and data-heavy services—Google is looking beyond traditional renewables like wind and solar. Fusion power offers a unique promise: clean, stable, around-the-clock energy with zero carbon emissions and minimal waste.

Michael Terrell, who leads Google’s energy and climate strategy, said the company sees this as a strategic investment. “We’re helping to create a demand signal for fusion,” he said. “This is about scaling new technologies before the market has caught up.”

CFS CEO Bob Mumgaard echoed that sentiment, calling the partnership a vote of confidence in fusion’s commercial future. “It’s not just about science anymore. It’s about building real plants, delivering real power, and transforming the grid.”

The ARC plant is expected to come online in the early 2030s, though many hurdles remain. Engineers must solve problems related to plasma containment, extreme heat resistance, and cost efficiency. But investors are increasingly optimistic. Over $8 billion has poured into private fusion ventures, and governments in the U.S., U.K., and elsewhere are increasing funding.

Google is also backing the effort financially, expanding its investment in CFS as part of the deal. This partnership represents the largest commercial fusion power agreement to date, a move that could encourage other tech giants and utilities to follow suit.

Of course, there’s still the risk that the technology won’t scale as expected. But Google’s early commitment is a signal that the future of energy may not just come from solar panels and wind farms—but also from the stars.

For now, the 200 megawatts Google has purchased don’t exist. But if all goes to plan, they will power the digital world of tomorrow—with a cleaner, more sustainable engine at its core.