We’re pleased to share key takeaways from Corentin Baschet’s session at Solarplaza Summit Poland last month. 

Poland’s storage market is entering a new phase 

• Huge energy transition: Poland’s electricity generation has historically been dominated by coal, but renewables will account for nearly half of installed capacity by 2026, with significant increase in solar and wind power in particular. 

• Market growth: The energy storage market is entering a phase of transformative growth. The latest capacity market auction awarded 5 GW of battery storage projects with 17-year contracts, equivalent to at least 11 GW of physical battery capacity after de-rating. 

• Structural evolution: Since 2024, two major regulatory changes have significantly improved investment conditions – capacity market and the creation of ancillary services, particularly FCR and aFRR. 

• Subsidies: In October 2024, the European Commission approved a €1.2 billion support scheme for 3,9 GW of storage projects (NFOSiGW accounts for 43% of CAPEX). 

Clean Horizon expects part of the awarded projects to be delayed, with total installed capacity reaching 7.4 GW by 2030.  

Where do storage revenues come from in Poland today? 

Ancillary services still represent the largest share of revenues.  

In Poland, battery storage revenues are predominantly driven by ancillary services, which remain the primary revenue stream for developers. The Polish storage index stays elevated as these markets still lack meaningful competition, with reservation prices at very high levels compared to other European markets. However, the market remains relatively shallow (limited to approximately 2 GW of BESS). Poland’s integration into the PICASSO platform in July 2025 has so far been characterised by significant price volatility paired with low traded volumes, suggesting the market is still finding its equilibrium. 

Intraday continuous volumes are steadily increasing, while prices remained high. 

Intraday Continuous trading is emerging as an increasingly relevant revenue stream for storage assets in Poland. Exchanged volumes are steadily growing from 1 TWh in 2024 to 2.3 TWh in 2025, reflecting the rapid growth of intermittent renewables and the rising need for short-term balancing. 

Clean Horizon’s outlook for the Polish BESS market 

• Ancillary services are expected to become increasingly saturated by 2028. However batteries should continue to capture value from day-ahead volatility and intraday opportunities. 

• In our central scenario, a 4-hour battery remains profitable, with day-ahead revenues accounting for 57% of discounted revenues. 

• One key milestone to watch next: Poland joining the MARI platform. 

Would like to discuss the Polish market, storage revenues or project opportunities? Let’s talk: https://www.cleanhorizon.com/contacts