Mr Aadne Haga > Wikborg Rein > Oslo, Norway > Lawyer Profile

Wikborg Rein
Dronning Mauds gate 11
P.O.Box 1513 Vika
NO-0117 Oslo
Aadne Haga photo

Work Department

Petroleum and Energy, Litigation and Arbitration.


Aadne M. Haga is a Partner at Wikborg Rein’s Oslo office and heads the firm’s Gas Dispute practice. Haga’s main practice is assistance to buyers of natural gas, and he has successfully advised and/or represented a number of buyers of natural gas in international negotiations and international arbitration, most notably Ukrainian Naftogaz in its multi-billion dollar disputes with Gazprom. He also regularly advises on the legal framework for physical energy trading and oil and gas infrastructure in Norway. Haga speaks Russian and handles cases relating to the former Soviet Union. He has previously worked for the Norwegian Ministry of Foreign Affairs in Russia and for the Norwegian Armed Forces on the Balkans and in Ukraine.


2013- Partner, Wikborg Rein, Oslo. 2011-2012 Senior Lawyer, Wikborg Rein, Oslo. 2009 Senior Associate, Wikborg Rein, Oslo. 2004-2008 Associate, Wikborg Rein, Oslo. 2004 Trainee, Wikborg Rein, Oslo. 2003 Trainee, Rana municipal court. 1999 Peacekeeping service, the Balkans. 1996-1997 Executive officer, Royal Norwegian Consulate General, Murmansk, Russia.


2009 Practising Certificate. 2004 Cand.jur., University of Bergen. 1998 Single-term course, Serbo-Croatian, University of Oslo. 1996 Intermediate subject, Russian, University of Bergen. 1995 Norwegian armed forces Russian language course, equivalent to (one year) university basic subject.

Lawyer Rankings

Norway > Dispute resolution

Wikborg Rein‘s dispute resolution practice is praised by clients for providing ‘highly sophisticated legal advice‘ across a wide spectrum of contentious matters, with particular focus on the oil and gas, offshore, real estate, insurance and public sectors. The firm’s global head of disputes Ola Nisja leads the team and is highly regarded for his expertise in construction and contractual disputes; arbitration is another key area of instruction for Nisja. Kaare Andreas Shetelig concentrates on complex cases related to post-M&A disputes, transfer pricing litigation and public sector disputes, and Ola Haugen is well known for his established track record in arbitration. Dag Mjaaland and Aadne Haga specialise in gas sector disputes.

Norway > Oil and gas

At Wikborg Rein, the petroleum and energy team is assisting Ukrainian state-owned gas company Naftogaz with the implementation of a settlement and related awards, after acting as lead counsel for the client in a prominent, successful, multi-jurisdictional international arbitration; Aadne Haga, who heads up the gas disputes practice, and Dag Mjaaland, who is noted for his expertise in international gas disputes, jointly led on this matter. Head of the petroleum and energy team Cathrine Hetland has over a decade’s experience within the oil and gas sector.