Energy Charter Treaty Arbitration (The Republic of Azerbaijan v. The Republic of Armenia)

On 27 February 2023, the Republic of Azerbaijan served on the Republic of Armenia a Notice of Arbitration pursuant to Article 27 of the Energy Charter Treaty and the Arbitration Rules of the United Nations Commission on International Trade Law, 1976. The Permanent Court of Arbitration acts as Registry in this arbitration.  


Case information

Name(s) of Claimant(s) The Republic of Azerbaijan (State)
Name(s) of Respondent(s) The Republic of Armenia (State)
Names of Parties -
Case number 2023-65
Administering institution Permanent Court of Arbitration (PCA)
Case status Pending
Type of case Inter-state arbitration
Subject matter or economic sector Energy Resources/Electricity Generation
Procedural rules UNCITRAL Arbitration Rules 1976 (as modified by the Parties and the Arbitral Tribunal)
Treaty or contract under which proceedings were commenced

Multilateral treaty
Energy Charter Treaty (ECT)

Language of Proceeding English
Seat of Arbitration (by Country) -
Arbitrator(s), Conciliator(s), Other Neutral(s)

Ms. Jean E. Kalicki (Presiding Arbitrator)

Professor Donald M. McRae

Professor Brigitte Stern 

Representatives of the Claimant(s)

Agent for Azerbaijan

H.E. Mr. Elnur Mammadov

Deputy Minister of Foreign Affairs

Ambassador Extraordinary and Plenipotentiary

MINISTRY OF FOREIGN AFFAIRS OF THE REPUBLIC OF AZERBAIJAN

 

Representatives for Azerbaijan

Ms. Natalie L. Reid

Mr. Jeffrey Sullivan KC

Dr. Conway Blake

Ms. Ashika Singh

Ms. Lisa Wang Lachowicz

Ms. Charlotte Bocage

DEBEVOISE & PLIMPTON LLP

Representatives of the Respondent(s)

Agent for Armenia

H.E. Mr. Karen Andreasyan

Representative of The Republic of Armenia on International Legal Matters

 

Representatives for Armenia

Ms. Anna Shahnazaryan

Mr. Meruzhan Haykyants

OFFICE OF THE REPRESENTATIVE OF THE REPUBLIC OF ARMENIA ON INTERNATIONAL LEGAL MATTERS

 

Dr. Constantinos Salonidis

Mr. Joseph Klingler

Prof. Pierre d’Argent

Mr. Lawrence H. Martin

Mr. Peter Tzeng

Mr. Amir Ardelan Farhadi

Ms. Diem Huong Ho

FOLEY HOAG LLP

 

Ms. Alison MacDonald KC

ESSEX COURT CHAMBERS

 

Prof. Sean D. Murphy

GEORGE WASHINGTON UNIVERSITY SCHOOL OF LAW

Representatives of the Parties
Number of Arbitrators in case 3
Date of commencement of proceeding 27 February 2023
Date of issue of final award -
Length of Proceedings -
Additional notes -

Documents

Written submission

Armenia's Request for Bifurcation - with Redactions
Download | 23 December 2024 | English | 5 MB
Armenia's Request for Bifurcation - Exhibits
Download | 23 December 2024 | English | filesize missing
Armenia's Request for Bifurcation - Legal Authorities
Download | 23 December 2024 | English | filesize missing
Azerbaijan's Observations on Armenia's Request for Bifurcation - with Redactions
Download | 23 January 2025 | English | 3 MB
Azerbaijan's Observations on Armenia's Request for Bifurcation - Legal Authorities
Download | 23 January 2025 | English | filesize missing
Armenia's Memorial on Preliminary Objections - with Redactions
Download | 03 April 2025 | English | 8 MB
Armenia's Memorial on Preliminary Objections - Exhibits
Download | 03 April 2025 | English | filesize missing
Armenia's Memorial on Preliminary Objections - Legal Authorities
Download | 03 April 2025 | English | filesize missing
Azerbaijan's Counter-Memorial on Preliminary Objections - with Redactions
Download | 04 August 2025 | English | 6 MB
Azerbaijan's Counter-Memorial on Preliminary Objections - Legal Authorities
Download | 04 August 2025 | English | filesize missing
Armenia's Reply on Preliminary Objections - with Redactions
Download | 04 November 2025 | English | 11 MB
Armenia's Reply on Preliminary Objections - Exhibits
Download | 04 November 2025 | English | filesize missing
Armenia's Reply on Preliminary Objections - Legal Authorities
Download | 04 November 2025 | English | filesize missing
Azerbaijan's Rejoinder on Preliminary Objections - with Redactions
Download | 04 February 2026 | English | 7 MB
Azerbaijan's Rejoinder on Preliminary Objections - Legal Authorities
Download | 04 February 2026 | English | filesize missing

Press Release

Image

Arbitral Tribunal in Session
Download | 08 April 2026 | N/A | 6 MB
Arbitral Tribunal with Staff Members of the PCA and the Administrative Assistant
Download | 08 April 2026 | N/A | 5 MB
H.E. Mr. Karen Andreasyan, Agent for Armenia
Download | 08 April 2026 | N/A | 5 MB
H.E. Mr. Elnur Mammadov, Agent for Azerbaijan
Download | 08 April 2026 | N/A | 6 MB
Prof. Sean D. Murphy, Counsel for Armenia
Download | 08 April 2026 | N/A | 5 MB
Mr. Jeffrey Sullivan KC, Counsel for Azerbaijan
Download | 08 April 2026 | N/A | 5 MB
Mr. Amir Ardelan Farhadi, Counsel for Armenia
Download | 08 April 2026 | N/A | 4 MB
Ms. Natalie L. Reid, Counsel for Azerbaijan
Download | 08 April 2026 | N/A | 6 MB
Ms. Alison MacDonald KC, Counsel for Armenia
Download | 08 April 2026 | N/A | 4 MB
Dr. Conway Blake, Counsel for Azerbaijan
Download | 08 April 2026 | N/A | 6 MB
Dr. Constantinos Salonidis, Counsel for Armenia
Download | 08 April 2026 | N/A | 5 MB
Prof. Pierre d’Argent, Counsel for Armenia
Download | 08 April 2026 | N/A | 5 MB

Video

Hearing on Preliminary Objections Video - Day 1
Download | 07 April 2026 | English | filesize missing
Hearing on Preliminary Objections Video - Day 2
Download | 08 April 2026 | English | filesize missing

Transcript/Minutes

Hearing on Preliminary Objections Transcript - Day 1
Download | 07 April 2026 | English | 1 MB
Hearing on Preliminary Objections Transcript - Day 2
Download | 08 April 2026 | English | 521 KB

Cases