Iceni Battery Energy Storage | UK Progress Atlas

Current position

Ørsted reports that construction of its 300MW, 600MWh Iceni battery storage site near Norwich is complete, with 170 Tesla Megapacks installed beside the Hornsea 3 onshore converter station. Commissioning and testing have begun. Electrical installation continues, including the cables linking the two battery areas across the converter-station site, and preparations are under way to energise the battery transformer. The system has yet to enter full operation.

Project details

Its 600MWh design capacity provides two hours of storage at the stated 300MW power rating. Batteries can absorb electricity and return it to the grid later.

Latest developments

Renewables & Energy · 20 October 2026

Ørsted completes construction of 300MW Iceni battery site

Ørsted reports that construction of its 300MW, 600MWh Iceni battery storage site near Norwich is complete, with 170 Tesla Megapacks installed beside the Hornsea 3 onshore converter station. Commissioning and testing have begun. Electrical installation continues, including the cables linking the two battery areas across the converter-station site, and preparations are under way to energise the battery transformer. The system has yet to enter full operation.