IPP R.Power has enlisted power firm Axpo to optimise a 300MW/1,200MWh BESS in Poland, one of the largest such deals seen in Continental Europe.
Axpo will provide the full scope of optimisation services for the 4-hour battery energy storage system (BESS) in Dzięgielewo, east-central Poland, set to come online in 2028. The agreement runs for 10 years from the start of commercial operations.
It guarantees a minimum level of revenues for R.Power via a ‘floor’, helping bankability for the project, further aided by Axpo’s strong balance sheet (it is Switzerland’s largest electricity producer).
The companies had previously agreed a similar deal for a 150MW/300MWh BESS in Poland, announced in January this year.
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Axpo Polska head of origination Krzysztof Włodyga, commented: “A key challenge was scaling solutions to 300MW and refining them in the context of rapidly evolving operational and regulatory standards.”
The two companies have also previously signed solar PPAs. R.Power is active across numerous markets in solar and storage, see our recent video interview with two of its executives at the Energy Storage Summit 2026 in London here.
R.Power has 1.7GW/6.3GWh of BESS in Poland with capacity market (CM) contracts, won in annual auctions over the last few years including the most recent CM auction in late 2025. That auction saw the capacity awarded to BESS fall for the first time, following a big de-rating cut for the technology in order to favour gas.
The CM is the bedrock of the business case for large-scale BESS in Poland, helping drive gigawatt-hours of development and construction activity there. Projects and portfolios were progressed in the past two months alone by Green Capital, Tavion and Low Carbon.
