Masovian, Poland
Siedlce Greenvolt BESS
Capacity
600 MW / 2400 MWh
COD target
End-2027 (COD target)
Pricing
On enquiry
Chemistry
Not published (BYD Energy Storage supply)
Interconnection
PSE (voltage not published) · 50 Hz
One form — we email the desk and confirm to you.
600 MW / 2.4 GWh standalone BESS at Siedlce, Poland. Construction underway; COD targeted end-2027. Greenvolt Power public print — not EnergyInfra-owned.
Location. Siedlce, Masovian Voivodeship, Poland.
Grid. Standalone BESS, PSE / Polish grid. Construction started (public reports Sep 2026). BYD Energy Storage supply; P&Q and ONDE on electrical / EPC support.
Connection. Greenvolt Power — 600 MW / 2.4 GWh at Siedlce. Would be Poland’s largest BESS once complete. Builds on Ełk and Turośń (together the three assets would reach 1 GW / 4 GWh). Asking price not published.
Offtake. Not disclosed in the public source.
Public source. REGlobal / ESS-News, September 2026 (Greenvolt Siedlce construction). Compiled from a public announcement or listing — not an EnergyInfra-owned asset and not a CIM. https://reglobal.org/greenvolt-power-begins-construction-on-2-4-gwh-bess-in-poland/
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