Green Ambassadors: Europe 2025

Aksel Tannum


Advokatfirmaet Haavind AS

Norway

Aksel Tannum

Leading the renewable energy department at Advokatfirmaet Haavind AS, Aksel Tannum is a standout advisor across regulatory, contentious, and transactional mandates in the clean electricity space.

A major client is Eolus, whom Tannum is representing in a dispute regarding the validity of the licence for the Øyfjellet wind plant. The matter is crucial in navigating the development of renewable energy in a manner aligned with native rights.

In the solar power segment, a key client is major Norwegian landowner OVF, whom Tannum assisted in their entrance into the Geisli Energi joint venture with Hydro REIN. Tannum advised on transactional and operational agreements for the joint venture, which will pursue the development of an up-to-655 MW solar power portfolio.

Tannum oversees the firm’s relationship with industry association Renewables Norway, through which he helps advance dialogue on Norway’s green transition. As part of the relationship, Tannum and the firm assist in legal queries and in addressing strategic challenges related to the existing legal framework. As a leading voice within the sector, Tannum is a member of the Norwegian Bar Association’s energy law committee.