Solar Battery Storage Markets: Poland & Romania Guide
The Fastest-Growing BESS Markets in Central Eastern Europe
Poland and Romania are now among Europe's most active solar battery storage markets. Poland has surpassed 26 GW of installed solar capacity, while Romania's mandatory storage law is creating urgent retrofit demand across thousands of existing installations. For EPC contractors, distributors, and system integrators, both markets offer immediate, policy-backed opportunities backed by over €1.3 billion in combined government funding.
Why These Two Markets Lead Energy Storage Systems Growth in CEE
Rapid solar expansion has pushed both Poland and Romania to a tipping point: their grids need storage to stay stable. Poland's 26 GW solar base is generating curtailment pressure, while Romania's Law 255/2024 has made battery storage a legal requirement for tens of thousands of existing prosumers. Neither trend reverses — both are accelerating.
Poland Energy Storage Market: Size, Policy & Opportunity
Poland's solar capacity crossed 26 GW by early 2025 — a 28% year-on-year increase — making grid-level battery storage no longer optional but operationally necessary. Energy storage installations are projected to reach 543 MW in 2025, with a CAGR of 27.85% through 2030.
Romania Energy Storage Market: Mandatory Law Drives Demand
Romania's battery storage sector is entering its fastest growth phase. Installed BESS capacity stood at roughly 400 MWh in early 2025. A single private project — Nova Power & Gas's 400 MWh facility in Cluj County — doubled that figure upon commissioning. The government targets 2,500 MW by end-2025 and over 5,000 MW by 2026.
5 Energy Storage Trends Shaping Poland and Romania Through 2030
Poland's Mój Prąd programme now requires storage for new solar installations, while Romania's Law 255/2024 obliges existing prosumers to retrofit by 2027. Residential demand is no longer incentive-driven — it is compliance-driven.