UK Supreme Court rules Spain cannot avoid 120m renewable energy debt by claiming state immunity

"The court concluded that Spain had effectively waived its immunity from enforcement proceedings by signing up to the ICSID Convention, which obliges member states to recognise and enforce arbitration awards issued under the framework."

"The dispute dates back to policy changes introduced by Spain in 2012, when the government removed incentives that had previously supported investment in renewable energy infrastructure. The investors argued that the move breached Spain's obligations under the Energy Charter Treaty, which protects cross-border investments in the energy sector."

"The Supreme Court rejected Spain's claim, ruling that by signing the ICSID Convention the country had already accepted the jurisdiction of national courts for enforcement purposes."

The UK Supreme Court unanimously ruled that Spain cannot rely on state immunity to escape enforcement of a €120 million arbitration award owed to Luxembourg-based renewable energy investors. The dispute originated from Spain's 2012 withdrawal of renewable energy subsidies, which investors claimed violated the Energy Charter Treaty. An ICSID tribunal awarded the investors €120 million in 2018, but Spain refused payment. When investors sought enforcement through English courts in 2021, Spain argued sovereign immunity protected it from proceedings. The Supreme Court rejected this claim, determining that Spain's signature on the ICSID Convention constituted a waiver of immunity from enforcement actions in national courts.

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