UK BESS ROUNDUP: SSE commissions 300MWh unit, Matrix, Drax and Voltaria progress projects

By Cameron Murray, Jonathan TouriƱo Jacobo, Catie Owen
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SSE Renewables, Matrix Renewables, Drax and Voltaria have all progressed large-scale BESS projects in the UK, all-in-all totalling 1.8GWh of new capacity.

SSE Renewables commissions 150MW/300MWh Ferrybridge BESS in West Yorkshire

Developer SSE Renewables has reached commercial operations at the 150MW/300MWh Ferrybridge Battery Energy Storage System (BESS) project in West Yorkshire, northern England.

The project was built on the site of the former 2GW Ferrybridge coal-fired power station, which was decommissioned in 2016.

The newly commissioned BESS project is designed to store electricity and release it back to the grid when demand is highest, according to SSE. The company added that by adding rapid-response energy storage, the project will help balance supply and demand as well as support the efficiency and reliable operation of the UK’s grid.

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Construction of the Ferrybridge project began in August 2023 and saw the installation of 136 battery units supplied by Chinese manufacturer Sungrow. Both companies will also partner on another BESS project in Yorkshire, with Sungrow providing 320MW/640MWh of its PowerTitan liquid-cooled BESS units to the Monk Fryston project.

See the full original version of this article on Solar Power Portal here.

Matrix Renewables taps EDF for optimisation of 1GWh Scotland BESS

IPP Matrix Renewables has partnered with power firm EDF for the optimisation of its 500MW/1,000MWh Eccles BESS in Scotland. 

EDF will provide route-to-market (RTM) services and optimisation for the battery energy storage system (BESS) project once it becomes operational. 

It is scheduled to begin commercial operations in summer 2027, and will be Madrid-headquartered Matrix’ first standalone BESS in the UK. 

Matrix acquired Eccles and another identically-sized Scotland BESS, called Kilmarnock, in April 2025. It then appointed Tesla as BESS and engineering, procurement and construction (EPC) provider for the Eccles project in December. 

Matrix said it is located along key transmission corridors between Scotland and England. While GB has only one national electricity price, helping to solve regional imbalances is remunerated via the balancing mechanism (BM). And the biggest regional imbalance of all on the grid is the bounty of wind power in Scotland but most demand being in England, and insufficient transmission infrastructure to transport it south. 

See the full original version of this article on Solar Power Portal here.

Drax orders 420MWh of BESS from Canadian Solar’s E-Storage

Solar PV firm Canadian Solar’s energy storage solutions subsidiary, E-Storage, will deliver 420MWh AC of BESS across two projects for Drax Group. The projects will join the renewables company’s FlexGen portfolio.

The two installations include a 60MW/120MWh installation in Marfleet, England, and a 150MW/300MWh installation in Neilston, Scotland. The installations are expected to begin in Q3 of 2026 and early 2027, respectively.

Lee Dawes, chief operations officer of Drax Group, said: ā€œThis is our first investment in short-duration storage, and these assets will complement our existing generation portfolio.ā€

See the full original version of this article on Solar Power Portal here.

Voltaria enlists Rolls-Royce as EPC for 43MW/86MWh Scotland project

System integrator Rolls-Royce has started construction activities as part of an engineering, procurement, and construction (EPC) contract from BESS owner-operator Voltaria Helios Energy Storage for a project in Falkirk, Scotland.

It is the first large BESS by Rolls-Royce in the UK and the firm will provide its mtu EnergyPack solution with a capacity of 43MW/86MWh. The project will connect to the grid in 2026 and come online in 2027, and Rolls-Royce will also maintain the system for 15 years.

Rolls-Royce is a power solutions firm, separate to the well-known luxury car brand, which is owned by the BMW group.

13 October 2026
London, UK
Now in its second edition, the Summit provides a dedicated platform for UK & Ireland’s BESS community to share practical insights on performance, degradation, safety, market design and optimisation strategies. As storage deployment accelerates towards 2030 targets, attendees gain the tools needed to enhance returns and operate resilient, efficient assets.
2 December 2026
Italy
Battery Asset Management Summit Europe is the annual meeting for owners, operators, investors, and optimisation specialists working with operational BESS assets across the continent. The Summit focuses on how to maximise performance and revenue, manage degradation, integrate advanced optimisation software, navigate evolving market and regulatory frameworks, and plan for repowering or end-of-life strategies. With insights from Europe’s most active storage markets, it equips attendees with practical guidance to run resilient, profitable battery portfolios as the sector scales.

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