Europe’s Battery Storage Pipeline Expands with Large-Scale Projects Through 2030

Europe’s battery storage sector is growing through standalone installations, solar-paired systems, and projects aimed at easing grid congestion. The region added 36 GWh in 2025, with annual additions projected to surpass 50 GWh in 2026 and reach 138 GWh by 2030. The article profiles developments such as Greenvolt’s 600 MW/2.4 GWh Siedlce project in Poland and Vattenfall’s 254 MW project at a former nuclear site in Germany.
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Europe’s storage buildout spans homes, businesses, and large plants, according to SolarPower Europe. The region added 36 GWh in 2025; yearly growth is forecast to pass 50 GWh in 2026 and hit 138 GWh by 2030. Utility-scale batteries are a key expansion area, with developers weighing grid connections, discharge length, project readiness, and revenue certainty.
Several projects illustrate this shift. Greenvolt’s Siedlce facility in Poland is planned at 600 MW/2.4 GWh, with construction beginning in September 2026 and