Europe’s BESS 2025: Top 10 Large-Scale Energy Storage Systems
IKNET is an engineering company specializing in advanced solutions for the energy sector. We understand the importance of integrating modern technologies, particularly Battery Energy Storage Systems (BESS), to ensure grid stability and efficiency. Our services are scalable to meet client needs.
The ranking we prepared of the largest BESS projects in Europe highlights key market trends and its potential. It helps Ukrainian companies and investors evaluate technologies, system scales, and the role of renewables. IKNET develops and implements BESS projects in Ukraine — from concept to commissioning.
Below is a ranking of the ten largest operational BESS installations in Europe as of August 2025.
Top 10 BESS in Europe
1) RWE Neurath + Hamm BESS — Germany, 220 MW
North Rhine-Westphalia. Capacity 220 MW, storage 235 MWh, commissioned Dec 2024 – Feb 2025. Consists of two sites: Neurath (80 MW) and Hamm (140 MW), 690 lithium-ion blocks.
2) Minety BESS — United Kingdom, 150 MW
Wiltshire. Capacity 150 MW, storage 266 MWh, built in three 50 MW phases (2021–2022). Long considered Europe’s largest.
3) SSE Ferrybridge BESS — United Kingdom, 150 MW
West Yorkshire. Capacity 150 MW, storage 300 MWh, completed early 2025. 136 Sungrow blocks; powers over 240,000 households.
4) Lovech BESS — Bulgaria, 124 MW
Lovech. Capacity 124 MW, storage 496 MWh, commissioned May 2025. Officially recognized as the “largest BESS in the EU” by storage capacity. 111 battery containers.
5) FRV Midlands BESS — United Kingdom, 100 MW
Midlands. Total capacity 100 MW, commissioned 2024. Two separate projects by FRV (Abdul Latif Jameel Energy).
6) Clay Tye BESS — United Kingdom, 99 MW
Essex. Capacity 99 MW, storage 198 MWh, launched March 2024. 52 Tesla Megapack units with Autobidder AI system; powers ~300,000 households for 2 hours.
7) Pillswood BESS — United Kingdom, 98 MW
Hull, Yorkshire. Capacity 98 MW, storage 196 MWh, commissioned Nov 2022. 78 Tesla Megapack (2-hour duration), located near Dogger Bank offshore wind farm.
8) RWE Werne BESS — Germany, 72 MW
Werne. Capacity 72 MW, commissioned 2023. Before Neurath and Hamm, it was Germany’s largest operational BESS.
9) Smareg4 BESS — Germany, 67 MW
Thuringia. Capacity 67 MW. Part of the Energiewende strategy for renewable integration.
10) Contego BESS — United Kingdom, 34 MW
West Sussex. Capacity 34 MW, storage 68 MWh, commissioned 2023. 28 Tesla Megapack. Joint project by FRV and Harmony Energy.
Note on Other Projects
- DTEK-Fluence BESS (Ukraine, 200 MW): commissioning stage, expected launch — Oct 2025. 6 sites, total storage — 400 MWh.
- EnBW Philippsburg BESS (Germany, 400 MW): under development at a former nuclear site; launch expected 2026–2027.
- SSE Renewables (United Kingdom, up to 640 MWh): large-scale project in development.
- Carlton Power (United Kingdom, up to 2 GWh): ambitious mega-project set to reshape the market.
Regional Distribution
United Kingdom leads: 6 out of the top 10 and a well-developed BESS ecosystem with around 7.5 GWh of operational storage.
Germany ranks second: 3 projects on the list, with around 1.5 GWh of installed storage.
Bulgaria unexpectedly entered the top 10 thanks to a breakthrough BESS project and high profitability potential.
The scale of European BESS confirms: energy storage systems are a key element of modern power infrastructure. Innovations are reshaping the market and opening new business opportunities.
Interested in implementing advanced BESS solutions or other energy initiatives in Ukraine? IKNET provides full-cycle services — from technical audits and design to implementation and commissioning.