Case Details

Aria Capital LLC and Publio Administration LLC v. United Mexican States (ICSID Case No. ARB/25/49)

Subject of Dispute:

Wholesale electricity supply
Economic Sector:

Electric Power & Other Energy
Instrument(s) Invoked:

USMCA (United States-Mexico-Canada Agreement)
Applicable Rules:

ICSID Convention - Arbitration Rules

(a) Original Proceeding

Claimant(s)/Nationality(ies):

Aria Capital LLC (U.S.), Publio Administration LLC (U.S.)
Respondent(s):

United Mexican States (Mexican)
Date Registered:

November 21, 2025

Party Representatives

Claimant(s):

Clifford Chance, Perth, Australia and Washington, D.C., U.S.A.
Respondent(s):

Dirección General de Consultoría Jurídica de Comercio Internacional, Secretaría de Economía, Mexico City, Mexico
Status of Proceeding:

Pending
Latest Development:

January 19, 2026 - Following appointment by the Respondent, Michele Potestà (Italian/Swiss) accepts his appointment as arbitrator.

No References Available.

(a) Original Proceeding

Date	Development
November 21, 2025	The Acting Secretary-General registers a request for the institution of arbitration proceedings.
December 2, 2025	Following appointment by the Claimants, Fernando Piérola-Castro (Swiss/Peruvian) accepts his appointment as arbitrator.
January 19, 2026	Following appointment by the Respondent, Michele Potestà (Italian/Swiss) accepts his appointment as arbitrator.