Google's bet on nuclear power for data centers just got a major government boost. Constellation Energy received a $1.9 billion loan from the U.S. Department of Energy to restart the Duane Arnold Energy Center in Iowa, a nuclear facility that shut down in 2020. The plant will supply electricity directly to Google's operations under a long-term power purchase agreement.
This deal represents the first nuclear restart funded through the Biden administration's Title XVII loan program, a mechanism designed to support clean energy infrastructure. The move accelerates Google's strategy to decarbonize its data centers and meets the company's renewable energy commitments. Google has become increasingly vocal about the role nuclear power plays in powering artificial intelligence workloads, which consume enormous amounts of electricity.
The Duane Arnold plant joins a growing portfolio of nuclear agreements for tech giants. Google, Amazon, and Microsoft have all signed power purchase agreements with nuclear operators over the past year as they race to meet their net-zero targets while handling soaring AI compute demands. Data centers require constant, reliable baseload power that solar and wind alone cannot guarantee at scale.
Constellation Energy, operator of the largest U.S. nuclear fleet, has been aggressive in restarting idled reactors. The company already moved to extend the operating license of Three Mile Island's Unit 1, which it plans to restart for Microsoft's power needs. The nuclear renaissance in tech infrastructure reflects a fundamental shift in how cloud companies approach sustainability. Traditional renewable contracts no longer suffice when training large language models and running inference at global scale.
The $1.9 billion loan covers significant costs to bring the Duane Arnold reactor back online after three years of dormancy. The plant originally operated for 40 years before decommissioning. Restarting requires regulatory approvals, workforce retraining, and system modernization. The Energy Department's backing signals government confidence that nuclear restarts are viable and necessary for America's energy future.
This financing also comes as the nuclear industry lobbies for continued policy support. The Inflation Reduction Act included substantial tax credits for existing nuclear plants, part of a broader bipartisan effort to keep reactors running. The convergence of tech demand, climate goals, and political will has created an unusually favorable environment for nuclear expansion.
Google's Iowa deal underscores how artificial intelligence has become an infrastructure arms race. The company needs not just computing power but clean, reliable electricity to power that compute. Nuclear plants offer exactly that: carbon-free baseload generation with minimal land footprint. Unlike solar and wind, nuclear runs 24/7 regardless of weather, making it ideal for always-on AI systems.
The agreement also reflects tensions in the grid. As demand spikes from data centers, generative AI, and electrification, utilities struggle to keep pace. Restarting shuttered nuclear plants becomes more attractive than building new power plants from scratch, which takes years and faces permitting hurdles.
Expect more announcements in this space. Other tech giants have signaled similar ambitions. The nuclear-plus-AI story is reshaping energy markets and forcing traditional utilities to compete for tech contracts. For Google, securing Iowa's output locks in clean power for years and provides a template for future nuclear partnerships.