Arenko to Deploy Nimbus Platform at Ørsted’s 300 MW Iceni Battery Storage Project

Arenko has been selected to deploy its Nimbus optimisation, asset management and trading platform at Ørsted’s 300 MW/600 MWh Iceni battery energy storage project in the UK.

The Iceni project is being developed alongside Ørsted’s 2.9 GW Hornsea 3 offshore wind farm and is scheduled to become operational in the first quarter of 2027. The project is designed as the world’s first utility-scale battery directly integrated with offshore transmission infrastructure.

Unlike standalone battery projects, Iceni will share transmission infrastructure and an onshore grid connection with Hornsea 3. The arrangement is expected to improve the utilisation of existing grid infrastructure while enabling closer coordination between offshore wind generation and battery storage.

Arenko will deploy its full Nimbus platform to manage the battery’s trading, optimisation and asset management. The platform will support real-time decisions on capacity allocation, power market participation and coordination between the wind and storage assets.

Iceni is one of the UK’s early large-scale Pathfinder co-location projects developed under the Offshore Transmission Network Review (OTNR). The initiative is intended to demonstrate how shared grid connections between offshore wind and energy storage can improve system efficiency, increase renewable power utilisation and reduce the need for additional network infrastructure.

Rupert Newland, CEO of Arenko, said the combination of a utility-scale battery with one of the UK’s largest offshore wind farms creates significant opportunities while introducing operational and trading complexities that require advanced optimisation and automation.

Ørsted said the project will seek to optimise the performance of two different assets—offshore wind and battery storage—through a shared connection point while delivering value to the electricity grid.

Arenko said Nimbus has been deployed across 14 large-scale co-location projects and currently manages more than 1.2 GW of utility-scale battery, hybrid and renewable generation assets across the UK, Europe and the US.

The Iceni project is being positioned as a potential blueprint for future co-located energy infrastructure, demonstrating how battery storage and renewable generation can share grid infrastructure to improve flexibility and support the integration of renewable power.