Romania Pauses Modular Reactor Plan

Small modular reactors have been sold as nuclear power's practical turn: build the reactor in repeatable factory units, ship it to site, and avoid the cost and delay that come with vast, bespoke nuclear stations. The promise is industrial as much as technological. The first unit is expensive, the tenth should be cheaper, and the twentieth cheaper again.

Romania was meant to show whether that logic could work in Europe. The Doicești project, on the site of a former coal plant, was the continent's most closely watched small modular reactor plan. Instead, it has run into the problem that shadows almost every new nuclear technology: the economics only improve after repetition, but someone has to carry the cost and risk of the first one.

The first ferry is always the most expensive

The plan at Doicești was for six small reactor modules, each producing 77 megawatts of electricity, enough together to provide steady power for a mid-sized city (Economica). The developer, the American firm NuScale, has the first US regulatory design approval for a small modular reactor, which means its safety case has cleared the relevant test (NRC). The pause in Romania is not, at least on the available evidence, a problem of reactor physics.

It is a problem of who pays first. Romania wanted to buy one module, see how it performed, and only then commit to the other five. NuScale, according to Romanian reporting, did not accept that risk-sharing structure, leaving the framework agreement unsigned (HotNews). US financing of roughly $7 billion was reportedly available through export-credit agencies, but depended on a Romanian government guarantee that was never provided (Adevărul).

On 15 July, shareholders in Nuclearelectrica will vote on whether the original strategy still stands. Conditions linked to a February 2026 investment decision were not met by the June deadline (BVB/SNN). The vote could mean new contract terms, another technology partner, or a redesigned project (Bursa). That is not the same as cancellation. But when Europe's most advanced SMR project has to stop and rethink the deal, it tells you where the real obstacle lies.

NuScale has been here before. Its previous flagship project in Idaho was cancelled after costs rose and too few utility buyers signed up (ANS). Regulatory approval showed the design could satisfy safety rules. It did not show that customers would buy the electricity at the price required.

What it would cost on your electricity bill

An independent Romanian analysis put the construction-payback element of Doicești power at roughly €244 per megawatt-hour, rising to about €276/MWh once operating costs are included (Romania Military). That is an outside estimate, not an official tariff. Still, it sits well above where large-scale wind and solar projects in Europe often land, even allowing for the fact that renewables need storage or backup to provide the same round-the-clock supply (Lazard).

Romania's interim prime minister, Ilie Bolojan, has questioned the spending already committed: about $240 million spent so far, with another $600 million potentially needed before construction even begins (Adevărul, ZF).

Every European SMR faces the same question

Romania is not an outlier. Across Europe, governments looking at small modular reactors are also looking at public financial cushions, because private investors are not lining up to take the full risk on a reactor design that has yet to operate commercially.

Poland has made the mechanism unusually clear. Orlen Synthos Green Energy has applied for what it calls the EU's first Contract for Difference for SMRs, covering 14 reactors (OSGE). A Contract for Difference is a state-backed price guarantee: if market electricity prices fall below an agreed level, the government makes up the gap. It is an admission that SMR electricity is not yet expected to stand on its own in the market. Sweden has gone further, with the state taking a 60% stake in its Videberg nuclear venture and asking regulators to design long-term price-hedging tools that fit EU rules (Swedish government). Czechia is linking its Rolls-Royce SMR plans to domestic industrial participation and state backing, though the financial terms remain unclear (World Nuclear News).

The pattern is hard to miss. No European country has yet found a way to finance first-of-a-kind small modular reactors on ordinary market terms.

Doicești's reassessment does not prove that small reactors are finished. It shows that the next test is contractual, political and financial: can governments make the first plant bankable without disguising the cost from the people who will pay for it through electricity bills over decades? The factory-built nuclear story may still work. But the first unit still needs someone willing to buy it.