Case Overview

In Rockhopper v. Italy, the Claimants brought an ICSID arbitration under the Energy Charter Treaty (1994) concerning the Respondent's denial of a production concession for the Ombrina Mare offshore oil and gas field. The Claimants alleged that Italy's actions constituted an unlawful expropriation and breached the fair and equitable treatment standard. The dispute arose after the Respondent introduced a legislative ban on offshore drilling within twelve miles of the Italian coastline, which ultimately led to the rejection of the Claimants' pending application for a production concession. Following an Award in favor of the Claimants, the Respondent successfully sought annulment of the Award in its entirety.

Procedural History

The Claimants filed their Request for Arbitration on 14 April 2017. The Tribunal was formally constituted on 26 September 2017. During the proceedings, the European Commission was granted leave to intervene as a non-disputing party to present arguments on EU law. The Tribunal issued a Decision on the Intra-EU Jurisdictional Objection on 26 June 2019, denying Italy's objection. A subsequent request for reconsideration based on the CJEU's Komstroy judgment was denied on 20 December 2021. The Tribunal issued its final Award on 23 August 2022. On 28 October 2022, the Respondent filed a Request for Annulment and requested a provisional stay of enforcement of the Award pursuant to Article 52(5) of the ICSID Convention. The ad hoc Committee issued its Decision on Annulment on 2 June 2025.

Key Issues and Positions

Jurisdiction

The Respondent argued that the ECT did not apply to intra-EU disputes, relying heavily on EU law and CJEU judgments, including Achmea and Komstroy. The Claimants maintained that the Tribunal's jurisdiction was firmly established under Article 26 of the ECT and public international law.

Merits

The Claimants argued that Italy's denial of the production concession unlawfully expropriated their investment and frustrated their legitimate expectations. The Respondent contended that the Claimants had no vested right to a concession and that the ban was a legitimate exercise of regulatory police powers.

Quantum

The Claimants sought EUR 275 million in compensation based on a Discounted Cash Flow (DCF) valuation model. The Respondent argued that a DCF model was entirely inappropriate for an unapproved, non-producing project.

Annulment

The Respondent sought annulment under Article 52(1)(a) (improper constitution of the Tribunal) and Article 52(1)(d) (serious departure from a fundamental rule of procedure), arguing that the Claimants' appointed arbitrator, Charles Poncet, failed to disclose his prior criminal prosecution and convictions in Italy, which were later annulled due to a statute of limitations. The Claimants argued that the convictions were annulled, leaving no criminal record, and that the Respondent had waived its right to object.

Tribunal/Court Reasoning and Holdings

Jurisdiction

The Tribunal rejected the intra-EU objections, finding that the ECT contains no explicit disconnection clause and that EU law does not supersede the ECT's dispute resolution mechanism.

Merits

The Tribunal found that the Claimants had acquired a definitive right to be granted the production concession by August 2015. The subsequent legislative ban and the formal denial of the concession completely and immediately deprived the Claimants of their investment, constituting a direct and unlawful expropriation under Article 13 of the ECT. In a separate opinion, Arbitrator Pierre-Marie Dupuy agreed with the finding of expropriation but emphasized that the Claimants could not have legitimately expected the successful outcome of their exploitation claim given the environmental context, meaning an FET claim would have failed had expropriation not been established.

Quantum/Damages

The Tribunal relied on a 2014 pre-acquisition DCF valuation prepared internally by Rockhopper, determining the fair market value of the expropriated investment to be EUR 184 million. Arbitrator Dupuy concurred with the use of the DCF method, noting it was appropriate given the baseline used was the actual modest value of the field at the time of investment.

Annulment/Set-Aside

The ad hoc Committee found that the Tribunal was improperly constituted under Article 52(1)(a). The Committee reasoned that Charles Poncet's failure to disclose his prior criminal prosecution in Italy frustrated the reasonable expectations of the parties and deprived the Respondent of its procedural rights to challenge the arbitrator. The Committee concluded that an objective observer could have reasonable concerns that Charles Poncet's experience with the Italian justice system affected his reliability for the exercise of independent judgment involving Italy. The Committee did not find it necessary to rule on the Article 52(1)(d) ground.

Costs

In the underlying arbitration, the Tribunal ordered the Respondent to pay EUR 6.67 million for decommissioning costs, plus interest, and GBP 3.5 million towards legal fees. In the annulment proceedings, the Committee ordered each side to bear half of the costs of the annulment proceedings and to pay its own legal fees and expenses, directing Rockhopper to reimburse Italy US$ 359,992.72 for its share of the advances.

Disposition / Relief

The ad hoc Committee annulled the Award of 23 August 2022 in its entirety. Each side was ordered to bear half of the costs of the annulment proceedings, with Rockhopper required to reimburse the Italian Republic US$ 359,992.72.