Tønsberg

Overview

Tønsberg hosts 14 concession cases and 22 active grid queue positions, reflecting broad energy development interest across solar generation, data centres, hydrogen, and battery storage. The municipality is undergoing substantial grid modernisation led by Statnett and Lede, including a new 420 kV Tønsberg transformer station at Gulliåsen and voltage upgrades linking Bamble–Porsgrunn–Tønsberg, which will significantly increase regional transmission capacity. Tveiten transformatorstasjon serves as the primary connection point for virtually all queued projects, making the pace of that grid upgrade critical to near-term project realisation.

Recent Activity

In the last 30 days, Geisli Energi AS withdrew its 10 MW solar production reservation at Tveiten TRA (August 2026), a minor reduction in an otherwise dense queue. No new concession grants or significant project milestones were recorded in this period.

Key Substations

Municipality Stance

No explicit municipal opposition is evident from the available data; the breadth of both concession applications and grid queue reservations suggests a permissive local environment. The significant Statnett and Lede grid investment programmes further indicate that regional and national grid planners regard Tønsberg as a priority development zone.

Outlook

Tønsberg's outlook is strong, contingent on the timely completion of the 420 kV grid upgrade programme. Once the new Gulliåsen station is operational and the Bamble–Porsgrunn–Tønsberg voltage upgrade is finalised, substantial additional capacity will be unlocked. The current queue of over 400 MW of consumption (predominantly data centres and hydrogen) signals high developer confidence, though competition for grid slots at Tveiten TRA is intense and queue management will be a key bottleneck. Solar developers — particularly Differ Energy with seven active positions — are well-positioned if concessions advance. The hydrogen interest at Slagentangen adds industrial diversification potential.