Procedural Background and Key Issues

This Decision on Jurisdiction, Liability, and Quantum Principles was rendered in an ICSID arbitration initiated by two Dutch-incorporated entities, NextEra Energy Global Holdings B.V. and NextEra Energy Spain Holdings B.V. (Claimants), against the Kingdom of Spain (Respondent). The dispute arose from Spain's significant reforms to its renewable energy regulatory framework, which Claimants alleged violated the Fair and Equitable Treatment (FET) standard under Article 10(1) of the Energy Charter Treaty (ECT).

The Tribunal addressed several key issues: (i) Spain's jurisdictional objections, including the intra-EU nature of the dispute, the denial of benefits clause under ECT Article 17, and the definition of "investor"; (ii) whether Spain's regulatory changes breached the FET standard by frustrating the Claimants' legitimate expectations; and (iii) the appropriate principles for the quantification of damages.

Decision on Jurisdiction

The Tribunal dismissed all of Spain's jurisdictional objections. Crucially, on the denial of benefits objection under ECT Article 17, the Tribunal found that while the Claimants were ultimately controlled by nationals of a third state (the United States), Spain had failed to exercise its right to deny benefits in a timely and good-faith manner. The Tribunal noted that Spain was aware of the investment's structure and the Claimants' intention to rely on the ECT as early as March 2012 but only invoked Article 17 in its Memorial on Jurisdiction in September 2015. This delay, combined with ongoing assurances to the investor, estopped Spain from raising the objection. The Tribunal also rejected the intra-EU objection, finding no basis in the ECT's text to exclude disputes between an EU investor and an EU Member State, a conclusion it maintained even after considering the CJEU's judgment in *Achmea*.

Findings on Liability and Quantum Principles

On the merits, the Tribunal found that Spain had breached its FET obligation under ECT Article 10(1). The Tribunal held that specific, repeated assurances from high-level Spanish officials regarding the stability of the regulatory regime had created legitimate expectations for the Claimants. The subsequent fundamental and radical changes to the remuneration framework, which undermined the security and viability of the investment, violated these expectations. The Tribunal concluded that these changes went beyond a legitimate exercise of the State's regulatory powers.

Regarding damages, the Tribunal rejected the Claimants' primary valuation based on the Discounted Cash Flow (DCF) method as overly speculative, given the plants' short operational history. Instead, it adopted an alternative methodology based on a "reasonable rate of return" on the capitalized value of the assets. The Tribunal accepted the Claimants' valuation of the assets at €720.6 million, including financing and intercompany costs. It determined that the appropriate rate of return was the Weighted Average Cost of Capital (WACC) plus a premium of 200 basis points (bps), rather than the 300 bps sought by the Claimants.

Operative Decision

The Tribunal affirmed its jurisdiction over the dispute and found Spain liable for breaching ECT Article 10(1). It ruled that the Claimants are entitled to damages calculated as a return on the capitalized value of their assets (€720.6 million) as of 30 June 2016, based on the WACC plus a 200 bps premium. The Tribunal ordered the Claimants to recalculate their damages claim on this basis and awarded pre- and post-judgment interest, compounded monthly, based on the 5-year Spanish sovereign bond rate at the date of the Award.

Procedural Context and Key Issue

In an ICSID annulment proceeding initiated by the Kingdom of Spain, the ad hoc Committee issued a decision terminating the provisional stay of enforcement of the underlying award. The continuation of the stay had been made conditional upon Spain providing a specific, unconditional undertaking to recognize the award as final and binding and to pay the amounts due if its annulment application were to be rejected.

Committee's Analysis of Non-Compliance

The Committee determined that the letter submitted by Spain failed to meet the stipulated conditions in both substance and form. Substantively, Spain's submission did not contain the precise commitments required by the Committee's prior order. It omitted the explicit undertaking to recognize the award's finality and to unconditionally pay the pecuniary obligations within a specified timeframe. Instead, Spain provided a general statement of its intent to comply with its international obligations, which the Committee found insufficient to satisfy the order's requirements.

Procedurally, the Committee found that the letter was not executed by a "duly-authorised signatory with the full power to bind" the State, such as the Minister of Finance, and was not counter-signed by the Attorney General, both of which were explicit formal requirements of the order. The letter was signed by an Undersecretary, and no evidence was provided to establish that this official possessed the necessary authority to bind Spain to the undertaking.

Operative Decision

Based on these findings of non-compliance, and pursuant to its prior order, the Committee ordered that the stay of enforcement of the award be terminated effective from the date of notification of the decision. The Committee also reserved its right to revisit its decision and to address the allocation of costs at a subsequent stage of the proceedings.

Procedural Posture and Decision

This document is the Decision on Annulment issued by an ICSID ad hoc Committee in the case between NextEra Energy entities and the Kingdom of Spain. The Committee unanimously dismissed Spain's application to annul the Award of 31 May 2019, which had found Spain liable for breaching the fair and equitable treatment standard under Article 10(1) of the Energy Charter Treaty (ECT) and ordered it to pay damages of approximately EUR 290.6 million.

Annulment Grounds and Committee's Analysis

Spain sought annulment based on three grounds under Article 52(1) of the ICSID Convention: manifest excess of powers (Art. 52(1)(b)), serious departure from a fundamental rule of procedure (Art. 52(1)(d)), and failure to state reasons (Art. 52(1)(e)). The Committee systematically analyzed and rejected each of the twenty-two specific arguments advanced by Spain.

On the ground of manifest excess of powers, the Committee found that the original Tribunal's decisions on jurisdiction (ratione personae, materiae, and voluntatis) were tenable as a matter of law. This included the Tribunal's rejection of Spain's intra-EU objection, its interpretation of the denial of benefits clause under ECT Article 17, and its findings on the existence of an investor and an investment. The Committee emphasized that its mandate is not to review the correctness of the Award but to determine if an excess of power was manifest, a high threshold which Spain failed to meet. The Committee noted that the Tribunal's conclusions were consistent with those of numerous other ECT tribunals, reinforcing their tenability.

Regarding the alleged failure to state reasons, the Committee determined that the Tribunal had provided a rationale for its key findings that was sufficient for a reader to follow its reasoning. It held that a tribunal is not required to address every argument or piece of evidence presented by the parties. The Committee concluded that Spain's objections primarily targeted the adequacy and correctness of the reasoning, which are matters of appeal and fall outside the scope of annulment proceedings.

Finally, on the alleged serious departures from fundamental rules of procedure, the Committee found that Spain had waived several of its objections—including those related to an allegedly erroneous translation and late submissions—by failing to raise them promptly during the arbitration, as required by ICSID Arbitration Rule 27. For the remaining procedural arguments, the Committee found no departure that was both serious and from a fundamental rule of procedure, such as the right to be heard.

Operative Part and Costs

The Committee dismissed Spain's Application for Annulment in its entirety. Applying the 'costs follow the event' principle, the Committee ordered Spain to bear all costs of the annulment proceedings, including the Committee's fees and ICSID's administrative expenses, and to pay USD 3,500,000 towards the Claimants' legal fees and expenses, with interest.

Procedural Posture and Relief Sought

This document is an application submitted by the Kingdom of Spain to the Chief Justice of the United States Supreme Court, in his capacity as Circuit Justice for the D.C. Circuit. Spain seeks a 60-day extension of time, until May 2, 2025, to file a petition for a writ of certiorari. The petition would seek review of an August 16, 2024 judgment of the U.S. Court of Appeals for the D.C. Circuit, which concerned the enforcement of arbitral awards rendered against Spain in disputes initiated by several European Union-based energy companies under the Energy Charter Treaty.

Grounds for Supreme Court Review

Spain argues that Supreme Court review is warranted to resolve two significant circuit splits. The first concerns the arbitration exception to the Foreign Sovereign Immunities Act (FSIA), 28 U.S.C. § 1605(a)(6). Spain contends that the D.C. Circuit erred by treating its objection to the very existence of a valid arbitration agreement—an objection premised on European Union law holding that the ECT's arbitration clause does not constitute a valid offer to arbitrate between EU Member States and EU investors—as a merits question for arbitrators, rather than a threshold jurisdictional issue for the court to decide independently. This approach, Spain asserts, conflicts with that of the Second and Fifth Circuits, which treat the existence of an agreement as a jurisdictional prerequisite under the FSIA.

The second issue involves a circuit split on the availability of the forum non conveniens doctrine in actions to confirm foreign arbitral awards. Spain notes that the D.C. Circuit maintains a categorical prohibition against this defense, a position with which the Second Circuit has expressly disagreed. Spain highlights that both issues implicate critical U.S. foreign relations concerns, particularly as enforcement of the awards could compel Spain to violate European Union law regarding State aid.

Justification for Extension

The application justifies the request for an extension based on counsel's competing professional obligations, including briefing and oral arguments in other matters, and the need for counsel to become fully familiar with the factual and legal record following their retention at the en banc stage of the proceedings.

This document is a letter application submitted to the Clerk of the Supreme Court of the United States on behalf of Respondents NextEra Energy Global Holdings B.V., NextEra Energy Spain Holdings B.V., and 9REN Holdings S.À.R.L. in the matter of Kingdom of Spain v. Blasket Renewable Investments LLC, et al., No. 24-1130.

Pursuant to Supreme Court Rules 15.3 and 30.4, counsel for the Respondents respectfully requests a 35-day extension of time, from June 4, 2025, to July 9, 2025, to file their brief in opposition to the petition for a writ of certiorari. The grounds for the request include the need to address anticipated amicus curiae briefs in support of the Petitioner and scheduling conflicts arising from counsel's other professional commitments, including briefing and oral arguments in other federal court matters.

This amicus curiae brief was filed by the Government of Romania in the Supreme Court of the United States in support of the Kingdom of Spain's petition for a writ of certiorari. Romania argues that the Supreme Court should review the D.C. Circuit's decision in NextEra Energy Global Holdings B.V. v. Kingdom of Spain, which held that the arbitration exception to the Foreign Sovereign Immunities Act (FSIA) applies to enforce an arbitral award against a foreign state even where that state did not validly agree to arbitrate the dispute.

Romania contends that the D.C. Circuit's ruling broadens the FSIA's arbitration exception beyond its statutory text and legislative intent, which presuppose the existence of a valid arbitration agreement. The brief highlights that, under binding European Union law as determined by the Court of Justice of the European Union (CJEU) in cases such as Achmea and Komstroy, arbitration agreements for intra-EU investment disputes are invalid. The D.C. Circuit's failure to recognize this principle, Romania argues, infringes upon the sovereignty of EU Member States, disregards principles of international comity, and creates a conflict of laws that could force states like Spain and Romania to violate their EU obligations.

Furthermore, the brief asserts that the D.C. Circuit's decision creates a circuit split with the Second and Fifth Circuits, which require a valid agreement to arbitrate for the FSIA exception to apply. Romania urges the Court to grant certiorari to resolve this split, ensure a uniform application of the FSIA, and prevent U.S. courts from becoming a forum for investors to circumvent the EU's established legal order. The brief emphasizes the importance of the U.S. speaking with "one voice" on matters of foreign sovereign immunity.

Procedural Posture and Purpose

This document is an amicus curiae brief filed by the European Commission, on behalf of the European Union, before the Supreme Court of the United States. The brief is submitted in support of the Kingdom of Spain's petition for a writ of certiorari to the U.S. Court of Appeals for the District of Columbia Circuit. The underlying dispute concerns the enforcement of arbitral awards obtained by EU investors against Spain under the Energy Charter Treaty (ECT).

Key Arguments of the Amicus Curiae

The European Commission argues that the case presents issues of exceptional importance to the European Union's legal order and that the D.C. Circuit's decision warrants review. The core of the Commission's position is that intra-EU investment arbitration is fundamentally incompatible with EU law. Citing binding precedent from the Court of Justice of the European Union (CJEU), particularly the *Achmea* and *Komstroy* judgments, the brief asserts that EU Member States cannot, and did not, consent to arbitrate investment disputes with investors from other EU Member States under the ECT. Consequently, Spain never made a valid offer to arbitrate, and no valid arbitration agreement was ever formed with the respondent investors. The Commission contends that the D.C. Circuit erred by treating the existence of a valid arbitration agreement as a merits question rather than a threshold jurisdictional requirement under the Foreign Sovereign Immunities Act (FSIA).

The brief further argues that the D.C. Circuit's decision encourages the enforcement of intra-EU awards in the United States, even though such awards are invalid and unenforceable within the entire EU. This outcome undermines the integrity of the EU's autonomous legal system, which requires that disputes involving EU law be resolved within the EU's judicial framework, under the ultimate authority of the CJEU. The decision invites a "deluge" of enforcement actions in U.S. courts, creating conflicts with EU law, particularly concerning State aid rules, which may prohibit the payment of such awards without prior Commission approval.

Broader Implications and Relief Sought

Finally, the Commission warns that the D.C. Circuit's reasoning has broad repercussions beyond the immediate case. By holding that an investment treaty itself can constitute a completed agreement to arbitrate sufficient to abrogate sovereign immunity under the FSIA, the decision potentially affects hundreds of modern investment treaties and exposes numerous foreign sovereigns to litigation in U.S. courts. The European Commission urges the Supreme Court to grant the petition for certiorari to address these critical questions of international comity, sovereign immunity, and the proper interpretation of the FSIA's arbitration exception.

This document is a letter filed with the Clerk of the Supreme Court of the United States by counsel for Respondents NextEra Energy Global Holdings B.V., NextEra Energy Spain Holdings B.V., and 9REN Holding S.À.R.L. The letter formally requests a further six-day extension of time, from August 8, 2025, to August 14, 2025, to file their response to the petition for a writ of certiorari in the matter of *Kingdom of Spain v. Blasket Renewable Investments, LLC*, No. 24-1130. The request is made pursuant to U.S. Supreme Court Rules 15.3 and 30.4. The filing notes that the Court had previously granted two extensions, setting the operative deadline. The letter confirms that no other party, including the Petitioner (Kingdom of Spain) and the co-Respondent (Blasket Renewable Investments LLC), opposes this further extension request.

Procedural Posture and Issues Presented

This document is a Brief in Opposition to a Petition for a Writ of Certiorari, filed by Respondent Blasket Renewable Investments, LLC (“Blasket”) before the Supreme Court of the United States. The brief requests the Court to deny the petition filed by the Kingdom of Spain, which seeks review of a decision by the U.S. Court of Appeals for the D.C. Circuit concerning the enforcement of an international arbitral award.

The petition presents two principal questions for review: (1) whether a sovereign's consent to arbitrate in an investment treaty constitutes an "agreement ... for the benefit of a private party" that waives sovereign immunity under the Foreign Sovereign Immunities Act (FSIA), 28 U.S.C. § 1605(a)(6); and (2) whether the doctrine of forum non conveniens is an available defense for a foreign sovereign in arbitral award enforcement proceedings in the United States.

Respondent's Arguments for Denial of Certiorari

Blasket argues that certiorari should be denied because the D.C. Circuit's decision is correct and does not create a circuit split warranting the Supreme Court's review. On the FSIA issue, Blasket contends that the D.C. Circuit properly applied the plain text of the statute, which recognizes an exception to immunity for agreements made either "with" or "for the benefit of" a private party. Blasket asserts that Spain’s accession to the Energy Charter Treaty (ECT) undisputedly created an agreement for the benefit of investors, thereby satisfying the jurisdictional requirement. It further argues that Spain’s primary textual argument before the Supreme Court was not preserved in the lower courts.

Regarding the forum non conveniens defense, Blasket characterizes the circuit split as "shallow and stale," noting that the Supreme Court has twice declined to review the issue in recent years. Blasket supports the D.C. Circuit's position that the defense is unavailable in award enforcement actions against sovereigns because U.S. courts provide a unique and necessary remedy—the attachment of a sovereign's U.S.-based commercial assets—for which no adequate alternative forum exists. The brief concludes that the D.C. Circuit's decision is consistent with U.S. treaty obligations and the federal policy favoring arbitration, and that review by the Supreme Court is unwarranted.

This document is the Reply Brief for the Petitioner, the Kingdom of Spain, filed in the Supreme Court of the United States in support of its Petition for a Writ of Certiorari. The brief urges the Court to review a decision by the U.S. Court of Appeals for the District of Columbia Circuit concerning the enforcement of an arbitral award against Spain.

Key Issues Presented for Review

The brief argues for Supreme Court review based on two asserted circuit splits of exceptional importance to foreign sovereigns and U.S. foreign policy.

The first issue concerns the scope of the arbitration exception to the Foreign Sovereign Immunities Act (FSIA), 28 U.S.C. § 1605(a)(6). Spain contends that the D.C. Circuit erred by holding that a court can exercise subject-matter jurisdiction without first determining whether the sovereign consented to arbitrate "differences... between the parties" to the specific court action. Spain argues this approach, which treats the identity of the consenting parties as a non-jurisdictional merits question, directly conflicts with decisions from the Second and Fifth Circuits that treat consent as a threshold jurisdictional requirement. Spain asserts that the D.C. Circuit's rule improperly subjects sovereigns to burdensome discovery and litigation before their immunity is decided.

The second issue addresses the availability of the doctrine of forum non conveniens in actions to confirm foreign arbitral awards. Spain argues that the D.C. Circuit's categorical rule prohibiting the application of forum non conveniens in such cases deepens a circuit split. Spain posits that this prohibition encourages forum shopping, mires U.S. courts in complex foreign law disputes, and risks subjecting sovereigns to inconsistent obligations, thereby creating international friction.

Relief Sought

The Petitioner respectfully requests that the Court grant the petition for a writ of certiorari to resolve these critical and recurring questions of federal law.

This Supplemental Brief was filed by the Petitioner, the Kingdom of Spain, before the Supreme Court of the United States in support of its Petition for a Writ of Certiorari. The petition seeks review of a judgment from the U.S. Court of Appeals for the District of Columbia Circuit concerning the enforcement of an ICSID arbitral award. The brief's primary purpose is to rebut arguments made by the Respondents, Blasket Renewable Investments et al., particularly those relying on a recent Australian trial court decision, and to reassert the importance of the legal questions presented for the Court's review.

Spain contends that the Respondents' reliance on a recent Australian trial court decision, which permitted enforcement of a similar award against Spain, is misplaced and irrelevant. Petitioner argues that the Australian court's ruling interprets Australian domestic law (the Foreign States Immunities Act of 1985), which contains materially different language regarding waiver of immunity compared to the U.S. Foreign Sovereign Immunities Act (FSIA). Furthermore, Spain highlights that the Australian decision is a first-instance judgment subject to appeal. In contrast, Spain cites a recent Israeli court decision that declined to enforce an ICSID award against it on the grounds of forum non conveniens, directly contradicting the Respondents' assertion that the doctrine is unavailable in such proceedings.

The brief reiterates that the case presents two critical and recurring questions of U.S. law that have created a circuit split. The first concerns the proper interpretation of the FSIA's arbitration exception, 28 U.S.C. § 1605(a)(6). Spain argues the D.C. Circuit erred by failing to determine whether Spain had agreed to arbitrate the specific "differences between the parties," thereby nullifying a key jurisdictional prerequisite. The second question addresses the availability of the forum non conveniens doctrine in actions to enforce ICSID awards. Spain maintains that the D.C. Circuit's holding that the doctrine is unavailable conflicts with established legal principles and creates an improper incentive for forum shopping. The brief emphasizes the exceptional importance of these issues for foreign sovereigns, as evidenced by amicus briefs filed in support of the petition.

Ultimately, Spain asserts that the Respondents' supplemental arguments are improper and unsound, recycling previously refuted points. The Petitioner urges the Supreme Court to grant the petition for a writ of certiorari to resolve the significant legal questions presented and to decline the Respondents' invitation to address other issues not decided by the lower courts.

Procedural Posture and Recommendation

This document is a brief filed by the United States as amicus curiae before the U.S. Supreme Court. It was submitted in response to the Court's invitation to express its views on a petition for a writ of certiorari filed by the Kingdom of Spain. The petition seeks review of a decision by the U.S. Court of Appeals for the District of Columbia Circuit concerning the enforcement of arbitral awards rendered against Spain under the Energy Charter Treaty (ECT). The United States recommends that the Supreme Court deny the petition for a writ of certiorari.

Analysis of the FSIA Arbitration Exception

The brief addresses two principal questions. The first concerns the interpretation of the arbitration exception to the Foreign Sovereign Immunities Act (FSIA), 28 U.S.C. § 1605(a)(6). Spain argues that because European Union (EU) law prohibits intra-EU investment arbitration, it lacked the legal capacity to form a valid arbitration agreement with the respondent investors, who are nationals of other EU member states. Spain contends this issue goes to the very *existence* of an arbitration agreement, a jurisdictional question that a U.S. court must decide de novo. The D.C. Circuit held it was a question of the agreement's *scope*, properly decided by the arbitrators.

The United States agrees with Spain that the D.C. Circuit's reasoning was incorrect. It posits that whether a foreign state has a valid arbitration agreement "with or for the benefit of" the specific plaintiff is a jurisdictional prerequisite for a court to determine, not a matter of scope delegable to an arbitral tribunal. However, the United States argues that this error does not warrant the Court's review because, even on a de novo analysis, Spain's argument would likely fail. Citing the Vienna Convention on the Law of Treaties, the brief asserts that Spain cannot invoke its internal law (including its obligations under EU law) to invalidate its unequivocal and "unconditional consent" to arbitration as expressed in the ECT.

Analysis of Forum Non Conveniens

The second question presented is whether a suit to confirm a foreign arbitral award against a foreign state may be dismissed on grounds of *forum non conveniens*. The D.C. Circuit has a categorical rule precluding such dismissals, creating a conflict with the Second Circuit. While acknowledging the importance of the issue, the United States contends that the present case is a poor vehicle for its resolution. The brief notes that the factual record is undeveloped as to whether an adequate alternative forum exists where the respondents could obtain relief, particularly given the legal standoff between EU courts and arbitral tribunals on the validity of intra-EU investment awards. Consequently, the outcome of Spain's motion to dismiss might be the same under any circuit's rule, rendering the case unsuitable for resolving the circuit split at this time.

This document is a supplemental brief filed by Respondent Blasket Renewable Investments, LLC (“Blasket”) before the Supreme Court of the United States, urging the denial of a petition for a writ of certiorari filed by the Kingdom of Spain. The case concerns the enforcement of an arbitral award and addresses the interpretation of the Foreign Sovereign Immunities Act (FSIA) and the applicability of the forum non conveniens doctrine.

Interpretation of the FSIA Arbitration Exception

Blasket argues that the D.C. Circuit correctly interpreted the FSIA's arbitration exception, 28 U.S.C. § 1605(a)(6). The brief contends that jurisdiction is established when a foreign state has agreed to arbitrate disputes with “a private party,” as Spain did through the Energy Charter Treaty (ECT). According to Blasket, whether the specific plaintiff before the court is a proper party to that arbitration agreement is a question of scope that goes to the merits of enforcement, not a threshold jurisdictional issue to be decided de novo by the court. Blasket asserts that Spain’s contrary position would improperly convert routine merits-based defenses concerning treaty coverage into jurisdictional challenges, thereby undermining the efficiency and predictability of international arbitration. The brief refutes policy arguments raised by Spain and the U.S. government (as amicus curiae), characterizing them as extra-textual and inconsistent with the established framework for enforcing international awards under the New York and ICSID Conventions.

Forum Non Conveniens

The brief further contends that the second question presented in Spain's petition, concerning a circuit split on the applicability of forum non conveniens to award enforcement actions, does not warrant the Court's review. Blasket characterizes the split as “shallow” and “inconsequential,” arguing that the doctrine is unlikely to result in the dismissal of an enforcement action against a foreign state in any circuit. It posits that the factors relevant to a forum non conveniens analysis, particularly in the context of summary confirmation proceedings, would almost invariably favor retaining jurisdiction in the United States. Consequently, Blasket concludes that the petition for certiorari should be denied.