Major BESS Construction Milestones Reached in Poland, Italy, and Estonia
Several landmark battery energy storage system (BESS) projects have reached critical construction and operational milestones across the European Union, underscoring the bloc's accelerating transition toward grid-scale flexibility.
Poland's 1 GW Storage Portfolio
In Poland, Greenvolt Power has officially started construction on the massive 600 MW/2.4 GWh Siedlce battery energy storage project. Expected to become the country's largest and one of Europe's largest, the project is delivered in partnership with P&Q and ONDE. Together with BESS Turośń Kościelna and BESS Ełk, these three projects form a formidable 1 GW/4 GWh portfolio, with Siedlce accounting for 60% of the total capacity.
Operational Milestones in Italy and Estonia
In Italy, METLEN and Dolomiti Energia have inaugurated a 25 MW / 75 MWh BESS in Erchie, Puglia. Developed by METLEN, this standalone system provides crucial grid flexibility and holds a Capacity Market agreement with Terna. It stands as one of the first large-scale energy storage facilities operational in the country.
LG Energy Solution will supply battery storage equipment for the Raudsepa BESS project in Estonia, which has a power capacity of 192 MW and energy storage capacity of 420 MWh.
Meanwhile, in Estonia, the Raudsepa BESS project near Tsirguliina has reached its Final Investment Decision, with construction beginning in September 2026. Jointly developed by Evecon and Corsica Sole, the facility targets full operation by November 2027, further solidifying the Baltic region's energy security. These developments highlight a coordinated European effort to deploy multi-hour storage solutions, balancing intermittent renewable generation and ensuring robust cross-border energy resilience.
Source: SolarBytes, Parapolitika, Mediapen
This article was assisted by AI analysis. Please refer to the original source for official information.