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International Arbitration Forum

Leading arbitrator Public record 34 published cases

Horacio A. Grigera Naón

Arbitrator in 34 published cases (presiding or sole arbitrator in 1) before ICSID, PCA, UNCITRAL tribunals, in gold mining (roşia montană project), construction; panama canal expansion (third set of locks), hotel and resort development disputes.

Argentine ICSID, PCA, UNCITRAL Gold mining (Roşia Montană Project), Construction; Panama Canal expansion (Third Set of Locks), Hotel and resort development, Mining; mineral concessions, Bioethanol; sugar cane and alcohol production, Telecommunications; mobile telephony concessions

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Overview

In the published awards, Horacio A. Grigera Naón has been appointed by claimants 21 times and by respondents 2 times, and has presided or sat alone in 1 cases. Of the party appointments, 2 came from States and 21 from investors or companies. 5 dissenting or separate opinion(s) are recorded.

Outcome for the appointing side, where the published decision is clear: claimant prevailed in 39% of the 14 claimant appointments; respondent prevailed in 100% of the 1 respondent appointments. Mixed outcomes count as half.

Appointed most often by: Peru (2), Gabriel Resources Ltd. (2), Sacyr S.A. (1), True Blue Development Limited (1), True Blue Services, Limited (1).

34Published cases
1As chair or sole arbitrator
23Party appointments
5Dissents recorded

Track record

YearCaseRoleAppointed byInstitution / rulesSectorAward
2026 Orla Mining Ltd. v. Republic of Panama Co-arbitrator — ICSID · Washington, D.C. Mining; mineral concessions Read award →
2026 Chevron Corporation and Texaco Petroleum Corporation v. The Republic of Ecuador Co-arbitrator — PCA Oil and gas; environmental litigation; judicial conduct Read award →
2026 Eco Oro Minerals Corp. v. Republic of Colombia dissent Co-arbitrator Claimant ICSID · Washington, D.C. Gold and silver mining; páramo (high-mountain ecosystem) pro Read award →
2025 Gabriel Resources Ltd. and Gabriel Resources (Jersey) v. Romania Co-arbitrator Claimant ICSID · Washington, D.C. Gold mining (Roşia Montană Project) Read award →
2025 Gabriel Resources Ltd. and Gabriel Resources (Jersey) v. Romania dissent Co-arbitrator Claimant ICSID Gold mining (Roşia Montană Project) Read award →
2024 Telefónica, S.A. v. Republic of Colombia Co-arbitrator Claimant ICSID · Washington D.C. Telecommunications; mobile telephony concessions Read award →
2024 Campos de Pesé, S.A. v. Republic of Panama Co-arbitrator Claimant ICSID · Washington, D.C. Bioethanol; sugar cane and alcohol production Read award →
2024 Omega Engineering LLC and Oscar Rivera v. Republic of Panama Co-arbitrator Claimant ICSID · Washington, D.C. Construction; public works Read award →
2024 The Renco Group, Inc. v. Republic of Peru (Second Case) Co-arbitrator Claimant PCA · Paris Metal smelting and refining; environmental regulation (La Or Read award →
2023 Worth Capital Holdings 27 LLC v. Republic of Peru Co-arbitrator — ICSID · Washington, D.C. — Read award →
2023 True Blue Development Limited and others v. Grenada Co-arbitrator Claimant ICSID Hotel and resort development Read award →
2023 Valores Mundiales, S.L. and Consorcio Andino S.L. v. Bolivarian Republic of Venezuela Co-arbitrator Claimant ICSID · Washington, D.C. Food processing; corn and wheat flour milling Read award →
2023 BayWa r.e. Renewable Energy GmbH and BayWa r.e. Asset Holding GmbH v. Spain dissent Co-arbitrator Claimant ICSID Renewable energy (wind farms) Read award →
2023 Sacyr S.A. v. Republic of Panama (appointed by claimant in the Notice of Arbitration) Co-arbitrator Claimant ICSID Construction; Panama Canal expansion (Third Set of Locks) Read award →
2023 Sergei Paushok, CJSC Golden East Company and CJSC Vostokneftegaz Company v. The Government of Mongolia Co-arbitrator Claimant UNCITRAL · The Hague Gold mining; taxation Read award →
2021 The Carlyle Group L.P. and others v. Kingdom of Morocco Co-arbitrator — — — Read award →
2020 Bridgestone Licensing Services, Inc. and Bridgestone Americas, Inc. v. Republic of Panama Co-arbitrator — — — Read award →
2019 Vestey Group Ltd v. Bolivarian Republic of Venezuela Co-arbitrator Claimant — — Read award →
2019 Karkey Karadeniz Elektrik Uretim A.S. v. Islamic Republic of Pakistan Co-arbitrator — — — Read award →
2018 Álvarez y Marín Corporación S.A. and others v. Republic of Panama dissent Co-arbitrator Claimant — — Read award →
2018 Telefónica S.A. v. United Mexican States Co-arbitrator Parties jointly — — Read award →
2017 Murphy Exploration and Production Company International v. Republic of Ecuador dissent Co-arbitrator Claimant — — Read award →
2015 Société Civile Immobilière de Gaëta v. Republic of Guinea Co-arbitrator Claimant — — Read award →
2015 Hortensia Margarita Shortt v. Bolivarian Republic of Venezuela (Appointment accepted 19 May 2013; no tribunal was constituted before the proceeding was discontinued) Co-arbitrator Claimant — — Read award →
2014 Isolux Corsán Concesiones S.A. v. Republic of Peru (formerly Elecnor S.A. and Isolux Corsán Concesiones S.A. v. Republic of Peru) Co-arbitrator Respondent — — Read award →
2013 Caravelí Cotaruse Transmisora de Energía S.A.C. v. Republic of Peru Co-arbitrator Respondent — — Read award →
2013 Commerce Group Corp. and San Sebastian Gold Mines, Inc. v. The Republic of El Salvador Co-arbitrator Claimant — — Read award →
2012 International Quantum Resources Limited, Frontier SPRL et Compagnie Minière de Sakania SPRL v. République démocratique du Congo Co-arbitrator — — — Read award →
2011 Repsol YPF Ecuador, S.A. and others v. Republic of Ecuador and Empresa Estatal Petróleos del Ecuador (PetroEcuador) Co-arbitrator Claimant — — Read award →
2010 S & T Oil Equipment and Machinery Ltd. v. Romania (appointed by the claimant on 24 April 2009 to replace John Savage, who resigned on 17 April 2009) Co-arbitrator Claimant — — Read award →
2008 City Oriente Limited v. Republic of Ecuador and Empresa Estatal Petróleos del Ecuador (Petroecuador) [I] Co-arbitrator — — — Read award →
2008 City Oriente Limited v. Republic of Ecuador and Empresa Estatal Petróleos del Ecuador (Petroecuador) [I] Co-arbitrator — — — Read award →
2006 EnCana Corporation v. Republic of Ecuador (formerly EnCana Corporation v. Government of the Republic of Ecuador) Co-arbitrator Claimant — — Read award →
2003 Técnicas Medioambientales Tecmed, S.A. v. The United Mexican States President Co-arbitrators — — Read award →

Expertise

The legal issues and sectors decided most often in the published awards. Each links to the cases in the database.

fair and equitable treatment 8umbrella clause 5indirect expropriation 5legitimate expectations 4amicus curiae 4transparency 4gold mining 4bifurcation 3limitation period 3denial of justice 3annulment 3full protection and security 2non-disputing party submission 2document production 2discontinuance 2third-party funding 2minimum standard of treatment 2denial of benefits 2costs follow the event 2compound interest 2tax gross-up 2set-aside 2MFN clause 2Roşia Montană 2

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Compiled with AI from the published awards and decisions in the Forum’s database. It covers public cases only, counts each case once, and may contain matching errors; every row links to its source. Corrections: info@arbitration.org. All arbitrators →