Arbitration analysis: Dutch companies NextEra Energy Global Holdings BV and NextEra Energy Spain Holdings BV (NextEra) invested in Spanish solar energy plants benefiting from the then favourable economic tariffs for investors. These projects were hindered by dramatic regulatory changes stressed by EU authorities, leading Spain to revoke the incentives regime. Under the Energy Charter Treaty (ECT), NextEra sought redress by requesting arbitration before the International Centre for Settlement of Investment Disputes (ICSID), winning a €291m award (ICSID Award). Although the ICSID tribunal ruled that Spain had breached the ECT, the country has refused to pay, supported mainly by the Achmea and Micula judgments of the Court of Justice of the European Union (CJEU) that declared intra-EU arbitration incompatible with the EU laws, forcing NextEra to seek enforcement in the US. On 15 February, 2023, Columbia district judge Tanya S Chutkan rejected Spain’s motion to dismiss the ICSID award’s confirmation and allowed NextEra’s cross-motion for summary judgment. Furthermore, the district judge partially granted NextEra an anti-suit injunction against Spain, restraining the country from pursuing proceedings it had initiated in the Netherlands to prevent the recognition of the ICSID Award in the US. For its importance, this decision may mark the final stage in Nextera’s award enforcement odyssey, which Spain has persistently opposed as part of its global strategy. Written by Josep Galvez, English barrister, Del Canto Chambers (London) and Spanish Abogado, Litigo Partners (Barcelona).