In <span class="news-text_italic-underline">NextEra Energy Global Holdings BV and another v Kingdom of Spain [2026] SGHC 43</span>, the Singapore High Court dismissed Spain's application to set aside the registration of an Energy Charter Treaty (“<span class="news-text_medium">ECT</span>”) award and the related decision on annulment under the International Centre for Settlement of Investment Disputes (“<span class="news-text_medium">ICSID</span>”) Convention enforcement regime as implemented in Singapore. The High Court rejected all three objections raised by Spain — each grounded primarily in state immunity — reaffirming Singapore's firmly pro-enforcement stance in investor-state disputes and its consistent rejection of intra-EU objections to arbitral enforcement.
The Singapore High Court has dismissed an application by the Kingdom of Spain to set aside the registration of an ECT award and the related Decision on Annulment, registered in Singapore pursuant to <span class="news-text_italic-underline">The Arbitration (International Investment Disputes)</span> Act 1968 (the “<span class="news-text_medium">AIIDA 1968</span>”), which gives effect to Singapore’s obligations under the ICSID Convention. The award had been issued by an ICSID tribunal in favour of Dutch investors following a dispute with Spain. Prior attempts by Spain to annul the award before an ad hoc ICSID committee and to resist enforcement across multiple jurisdictions, had each proved unsuccessful.
When the Dutch investors sought registration and enforcement of the award in Singapore under the AIIDA 1968, the domestic legislation giving effect to Singapore's obligations under the ICSID Convention, Spain raised three objections, each rooted primarily in the doctrine of state immunity. The High Court rejected all three in their entirety.
First objection - adjudicative immunity under section 4 of The <span class="news-text_italic-underline">State Immunity Act 1979</span> (the “<span class="news-text_medium">SIA 1979</span>”)
Spain contended that it retained immunity under section 4 of the SIA 1979 on the basis that it had not submitted to the jurisdiction of the Singapore courts in respect of the recognition or enforcement of the award. The High Court rejected this argument, holding, in line with the approach taken in a number of other jurisdictions, that a state's accession to the ICSID Convention constitutes a waiver of adjudicative immunity and an implicit submission to the jurisdiction of the courts of other contracting states for the purposes of recognising and enforcing ICSID awards.
Second objection - immunity under section 11 of the SIA 1979 and validity of the arbitration agreement
Spain further argued that it retained immunity under section 11 of the SIA 1979 on the grounds that no valid arbitration agreement existed giving rise to the award. The High Court held that Article 26 of the ECT did indeed give rise to a valid arbitration agreement between Spain and the Dutch investors. The High Court also dismissed Spain's intra-EU objection — namely, that no valid arbitration agreement can exist between an EU member state and a national of another EU member state — finding the objection without merit.
Third objection - the “interests of justice” argument based on EU law
Finally, Spain invited the Court to set aside the registration order in the interests of justice, arguing that the award contravened EU law and Spain's constitutional arrangements with the EU. The High Court declined to do so, holding that this did not constitute a recognised ground for challenging an ICSID award and that acceding to such an argument would be contrary to the self-contained ICSID enforcement regime reflected in both the ICSID Convention and the AIIDA 1968.
This decision provides a further clear affirmation of Singapore's pro-enforcement approach to investor-state awards. It is the second investor-state enforcement case in recent months, following <span class="news-text_italic-underline">DNZ v DOA [2026] SGHC(I) 1</span>, in which the Singapore courts have declined to give weight to state immunity and intra-EU objections. Taken together, these decisions reinforce Singapore's position as a reliable and arbitration-friendly seat for the enforcement of international investment awards.
