When the Trump administration shredded the Biden-era $7 billion Regional Clean Hydrogen Hubs program, US green hydrogen stakeholders were left counting their losses. Offshore wind stalled. Funding dried up. Most players pulled back.
Aternium didn’t. The small US startup just announced plans to break ground on a green hydrogen facility in Dover, Delaware — and it isn’t waiting on federal subsidies, hydrogen hub money, or government rescue to make the numbers work.
Green hydrogen’s rough patch — and why startups are still pushing forward
The cancellation of the $7 billion Regional Clean Hydrogen Hubs program was a real blow. That initiative, funded through the 2021 Bipartisan Infrastructure Law, was designed to diversify the US hydrogen supply and speed up decarbonization across multiple industries. When the Trump administration scrapped it, many projects lost their financial footing overnight.
Heavy water has established applications in cancer research, pharmaceuticals, semiconductors, advanced electronics, nuclear energy, and emerging fusion technologies.
The underlying economics of green hydrogen, though, have been quietly improving. Advances in electrolyzer technology have pushed production costs lower regardless of what Washington does or doesn’t fund — opening a narrow but real path for companies willing to build market-driven models rather than subsidy-dependent ones.
Aternium is squarely in that camp. The startup isn’t waiting for a policy tailwind. It’s structured its operation around a revenue stream that most green hydrogen companies overlook entirely — one hiding in plain sight inside every molecule of water it processes.
The deuterium angle: what makes Aternium’s model different
Here’s the core insight. Water isn’t just hydrogen and oxygen. It also contains deuterium — a naturally occurring isotope of hydrogen carrying an extra neutron. As the International Atomic Energy Agency notes, deuterium isotopes are distributed across all forms of water, including the water in our bodies. It’s everywhere, but capturing it at scale is another matter entirely.
Aternium’s electrolysis system co-produces deuterium oxide — commonly called heavy water — alongside high-purity green hydrogen. That pairing is the economic engine of the whole operation.
Heavy water has established applications in cancer research, pharmaceuticals, semiconductors, advanced electronics, nuclear energy, and emerging fusion technologies. Demand is real and growing. Yet the US currently has no commercial-scale domestic production of heavy water, leaving critical industries dependent on foreign sources — a supply chain vulnerability that’s become harder to ignore. By selling deuterium oxide as a high-value co-product, Aternium generates revenue that offsets the cost of green hydrogen production, and the result, the company says, is competitive pricing without requiring federal support to get there.
Dover, Delaware: Aternium’s first facility takes shape
On August 4, Aternium announced that its flagship US facility will be built at Garrison Oak Technical Park in Dover, Delaware — pending a close of sale on the property later this year. The site already hosts both a solar power plant and a natural gas plant, but Aternium has been clear: the gas plant plays no role in its plans. The company is committed to running entirely on renewable electricity.
The announcement framed the Delaware facility as more than a pilot project. In Aternium’s own words, it “represents a major step toward establishing a secure domestic supply of heavy water and high purity hydrogen for strategic US industries.” The national security framing isn’t accidental — positioning deuterium oxide as a strategic material gives the project relevance well beyond the clean energy conversation. Expansion is already on the drawing board, with New Jersey and Pennsylvania identified as next targets for the company’s renewable-powered footprint across the Mid-Atlantic.
The Mid-Atlantic renewable energy backdrop
The Mid-Atlantic isn’t an obvious location for a renewable-energy-dependent manufacturing operation. Delaware and New Jersey are small, densely developed states with limited room for the utility-scale solar installations that power facilities in Texas or the Southwest.
Offshore wind changes the calculus. Delaware sits on the Delmarva Peninsula alongside Maryland and Virginia, and the 2.2 GW Maryland Offshore Wind Project — approved by the Department of the Interior in 2024 — has so far survived both local opposition and the current administration’s hostility toward offshore wind. That matters for any operation banking on regional renewable supply.
Virginia adds another data point. The 2.6 GW Coastal Virginia Offshore Wind project remains active, and Virginia voters elected renewables-friendly Abigail Spanberger as governor in 2025. The regional political picture, while uneven, isn’t uniformly hostile.
Pennsylvania is the wild card. The natural gas lobby is powerful there, and offshore wind isn’t a direct factor. Eastern Pennsylvania was previously linked to the MACH2 Mid-Atlantic Clean Hydrogen Hub — a renewables-and-nuclear initiative that has reportedly survived with partial federal funding even after the broader Hydrogen Hubs program was dismantled.
A market-driven test case for green hydrogen’s future
MACH2’s survival is notable, but Aternium isn’t counting on it. Delaware Public Radio reported on August 4 that the company is explicitly not relying on MACH2 or any federal subsidy to make its business model work. That independence is the whole point.
MACH2 itself received only a fraction of the $750 million it anticipated under the Biden administration — still operational, but on a reduced foundation. Aternium’s model doesn’t require that foundation at all. The co-production of deuterium oxide is what makes that possible, serving as the economic lever that lets the company offer competitive green hydrogen pricing while the rest of the industry waits for policy support that may never fully materialize again.
If the Delaware facility delivers on its promise, the implications extend well beyond one site in Dover. A replicable model — renewable electricity in, green hydrogen and heavy water out, no subsidy required — could reframe how the industry thinks about project viability in a post-hub environment. The next few years will show whether the deuterium angle is a clever workaround or the blueprint the sector has been missing.
CEO
Carlos is an engineer with strong expertise in technical and industrial topics. He previously worked at international companies such as Siemens and is multilingual.
