Three Nuclear Plants Pivot to Clean Hydrogen: Why This Matters for the Hydrogen Economy

Three American nuclear power stations are quietly reshaping what the clean hydrogen economy looks like in practice. Backed by the U.S. Department of Energy, demonstration projects at Nine Mile Point in New York, Davis-Besse in Ohio, and Prairie Island in Minnesota are proving that existing reactors can do far more than generate baseload electricity. They can become round-the-clock hydrogen factories, and that shift carries enormous implications for industry, transportation, and climate policy.

Nine Mile Point Nuclear Power Station in Oswego, New York, started generating hydrogen in February 2023 through a partnership with Constellation Energy. Using low-temperature electrolysis, the plant splits water into hydrogen and oxygen with carbon-free nuclear power. The hydrogen currently helps cool reactor components, a task traditionally served by hydrogen sourced from natural gas. A companion project with NYSERDA aims to run a fuel cell on that hydrogen and push the electricity back onto the grid by 2025, closing the loop between nuclear, hydrogen, and renewable integration.

A few hundred miles west, the Davis-Besse Nuclear Power Station in Oak Harbor, Ohio, is preparing to follow suit. Operator Energy Harbor expects its low-temperature electrolysis system to come online by 2025. The Ohio project is designed to test not only technical performance but economic viability, with potential offtake for local manufacturers, transportation fleets, and even a regional bus operator. That last point matters. Swapping diesel buses for fuel cell buses fed by nuclear-sourced hydrogen could slash tailpipe emissions in communities that have long hosted the heaviest industrial corridors.

The most ambitious of the three projects sits at Prairie Island Nuclear Generating Plant in Red Wing, Minnesota. There, Xcel Energy and Bloom Energy are deploying a first-of-a-kind high-temperature electrolysis system, targeting hydrogen output in 2026. High-temperature electrolysis uses heat from the reactor to improve efficiency, cutting the electricity required per kilogram of hydrogen. If the Prairie Island data confirms what modeling predicts, operators across the country will have a blueprint for wringing more hydrogen, and more revenue, out of the reactors they already own.

So what does this mean for the broader hydrogen economy? The answer begins with scale. According to the Department of Energy, a single 1,000-megawatt reactor could produce up to 150,000 tons of hydrogen every year (U.S. Department of Energy, 2023). Multiply that across the ninety-plus reactors operating in the United States and nuclear alone could deliver a sizable share of the ten million metric tons of clean hydrogen that the national Hydrogen Shot strategy envisions by 2030 (U.S. Department of Energy, 2021). That volume would be enough to decarbonize large swaths of ammonia fertilizer production, petroleum refining, and steelmaking, three of the hardest-to-abate industrial sectors.

Cost is the second reason these demonstrations matter. The Hydrogen Shot sets a target of one dollar per kilogram within a decade, a price point that would make clean hydrogen competitive with the gray hydrogen produced from unabated natural gas. Nuclear electrolysis benefits from high capacity factors, often above ninety percent, which dilutes capital expenditures across far more operating hours than solar or wind can achieve on their own. Add the production tax credit of up to three dollars per kilogram under the Inflation Reduction Act, and the math for nuclear hydrogen begins to work without subsidies by the early 2030s (Internal Revenue Service, 2023).

Policy alignment is the third factor. The Department of Energy is funding six to ten regional clean hydrogen hubs, at least one of which is centered on nuclear generation. Hubs concentrate producers, pipelines, storage, and end users within a defined geography, reducing the chicken-and-egg problem that has slowed hydrogen markets for decades. When a nuclear plant anchors a hub, it provides steady, predictable, low-carbon supply that attracts industrial customers willing to sign long-term offtake contracts.

There is also a grid reliability angle. Electrolyzers paired with reactors can act as flexible loads, ramping up when electricity is cheap and backing off when prices spike. That flexibility helps absorb variable renewables, supports voltage stability, and keeps nuclear units profitable during periods of low wholesale power prices. In other words, hydrogen production is becoming a tool for preserving the existing nuclear fleet, which the International Energy Agency has warned is at risk of premature retirement in several markets (International Energy Agency, 2022).

Skeptics will note that nuclear hydrogen still faces hurdles. Electrolyzer durability, water supply, hydrogen storage, and transport infrastructure all need further investment. Communities near reactors will want clear communication about safety and siting. And competition from renewable-powered electrolysis, particularly in regions with abundant wind and solar, will pressure nuclear developers to prove their cost edge. None of these challenges is fatal, but each will shape how quickly the sector scales.

The bottom line is straightforward. Three demonstration plants, thousands of miles apart, are laying the groundwork for a hydrogen economy that actually delivers on its promises. Nine Mile Point proves the technology works today. Davis-Besse tests whether the economics can travel outside the fence line. Prairie Island pushes the efficiency frontier. Together they give utilities, regulators, and investors something rare in clean energy, which is real operating data from real plants rather than spreadsheets and press releases. If these projects succeed, nuclear hydrogen will become a cornerstone of industrial decarbonization, and the hydrogen economy will finally move from aspiration to infrastructure. The next decade will reveal how far this quiet nuclear pivot can carry the transition.

#HydrogenEconomy #CleanHydrogen #NuclearHydrogen #Electrolysis #HydrogenShot #EnergyTransition

References

Internal Revenue Service. (2023). *Section 45V credit for production of clean hydrogen*. U.S. Department of the Treasury. https://www.irs.gov/credits-deductions/section-45v-credit-for-production-of-clean-hydrogen

International Energy Agency. (2022). *Nuclear power and secure energy transitions: From today's challenges to tomorrow's clean energy systems*. IEA. https://www.iea.org/reports/nuclear-power-and-secure-energy-transitions

U.S. Department of Energy. (2021). *Hydrogen Shot*. Office of Energy Efficiency and Renewable Energy. https://www.energy.gov/eere/fuelcells/hydrogen-shot

U.S. Department of Energy. (2023). *3 nuclear power plants gearing up for clean hydrogen production*. Office of Nuclear Energy. https://www.energy.gov/ne/articles/3-nuclear-power-plants-gearing-clean-hydrogen-production