Rosatom and Fennovoima Both Claim Victory After €7bn Hanhikivi Nuclear Ruling

Both Russia’s state nuclear corporation and the Finnish utility that tore up their joint contract are claiming victory from the same arbitration ruling. The Rosatom–Fennovoima ruling, delivered by an International Chamber of Commerce (ICC) tribunal and announced on Saturday 10 October 2026, concerns the cancelled Hanhikivi-1 nuclear power project in northern Finland: a €7 billion ($7.8 billion) venture that was supposed to deliver a single 1,200 MW Generation III+ reactor and meet roughly 10% of Finland’s electricity needs, as Reuters reported.

The project dates to a 2013 contract signed when Finnish industrial stakeholders, including Fortum, Outokumpu and SSAB, held roughly two-thirds of the venture through a joint holding company, with the Russian side holding about a third. In May 2022, Fennovoima terminated the construction contract, citing significant delays and the political risks created by Russia’s invasion of Ukraine. Rosatom disputed the termination, and the two sides have been locked in arbitration ever since.

What the Rosatom Fennovoima ruling actually decided

The two victory claims reflect the two halves of the award. On liability, the tribunal sided with Rosatom: it found that Fennovoima had unlawfully terminated the construction contract, and that the project was making good progress at the time of termination, the position the Russian corporation has held since 2022. Rosatom director general Alexey Likhachev declared: “Today’s victory is important, but not final. We will continue to prove that we are right regarding the Finnish project in courts of various instances.”

On money, the outcome favours Finland. Fennovoima conceded it was not entitled to terminate, but said the tribunal found it entitled to recover its advance payments “together with interest, worth more than €1 billion”: and that, after the two sides’ claims were offset against each other, a Rosatom subsidiary was ordered to pay Fennovoima “net damages of €606 million plus interest”, according to Nuclear Engineering International’s both-sides account.

Why both sides can claim to have won

Split outcomes of this kind are a familiar feature of large ICC arbitrations: liability and quantum are separate questions, and a tribunal can find one party’s contract termination unlawful while still ordering that party’s counterparty to pay substantial sums. That is essentially what appears to have happened here: Rosatom won the legal principle, Fennovoima won the money. The award also closes a chapter that began in December 2022, when a Dispute Review Board had already found the termination unlawful, but in a non-binding process that both sides rejected by filing notices of dissatisfaction. The ICC ruling is the first binding determination either side has obtained.

The practical question now shifts to enforcement, and to how much of the €606 million Fennovoima can actually collect from Rosatom subsidiaries in the current sanctions environment. Neither side has suggested the matter ends here: Fennovoima has wound down its operations and now exists primarily to pursue the legal proceedings, while Likhachev has said openly that Rosatom will continue the fight “in courts of various instances”. Split awards of this scale routinely produce years of follow-on litigation over recognition and enforcement, and there is little reason to expect this one to be different.

Why €606 million is a fraction of what the cancellation destroyed

The money figures need to be read against what was actually lost. The €606 million net award is less than a tenth of the €7 billion project value, and, more importantly, it sits against the €1.8–2.7 billion in orders that Finnish and EU companies had expected to win from the Hanhikivi-1 construction. Those orders are gone regardless of who “won” the arbitration. The real economic casualty of the cancellation is neither litigant: it is the supply chain of Finnish and European contractors, engineers and manufacturers that spent the better part of a decade positioning for a project that will never be built.

The energy-security ledger is equally stark. At 1.2 GW, Hanhikivi-1 would have covered roughly a tenth of Finland’s electricity demand: a substantial, dispatchable baseload block, the kind measured by capacity factor, the standard yardstick for how much electricity a plant actually delivers. Since the 2022 cancellation, Finland’s grid has had to lean on the Olkiluoto 3 reactor, an accelerating wind buildout and imports to fill the gap. The arbitration award settles a legal question about a contract signed in 2013; it cannot restore the decade of capacity planning that the cancellation unwound.

A different case from the Lingen dispute

Readers should not confuse this arbitration with Rosatom’s other active legal fight: the separate dispute over the Framatome fuel-fabrication facility in Lingen, Germany, where Rosatom has challenged licensing and partnership arrangements around nuclear fuel production. Hanhikivi-1 concerns a cancelled Finnish power plant and a 2022 contract termination; Lingen concerns a German fuel factory and its operating permissions. They share a protagonist and a courtroom-adjacent setting, but they are distinct cases with distinct legal questions.

The broader nuclear industry, meanwhile, keeps moving. The same week brought fresh evidence of nuclear’s momentum elsewhere, from Google and Constellation’s 3,590 MW nuclear deal to power AI data centres to the Thorizon–Urenco molten-salt reactor fuel agreement: a reminder that while lawyers argue over Hanhikivi’s remains, the sector’s centre of gravity has already shifted to new-build projects in the United States and Western Europe.