April delivered a very strong result for our model battery (2 MW, 4 MWh, RTE 0.86, DoD 100%), optimized on DA + IDC markets: 92.0 kPLN in revenue. This is almost identical to April 2025.

📊 Key takeaways:

• average daily revenue reached 3,067 PLN,
• the result was 5% higher than in March,
• the 12-month rolling revenue is now around 891 kPLN,
• April confirms that high volatility is not only driven by geopolitics and fuel prices, but also by increasingly visible PV-related seasonality.

⚡ What drove this result?

☀️ As solar generation increases, the classic daily spreads return: lower prices during high PV output hours, higher prices in the evening. This is the environment where well-optimized battery storage can capture real value.

It is also worth watching what is happening next door. In May, the SDAC auction price in Germany reached the allowed minimum of -500 EUR/MWh (-499.99 EUR/MWh). At the end of May, the price floor is planned to be lowered to -600 EUR/MWh for all countries, including Poland.

Tell us what you think!

💬 How will this affect energy storage? More short-term arbitrage opportunities, or faster long-term market stabilization through new flexibility sources?

We warmly invite you to visit our LinkedIn profile and share your thoughts in the comments under our latest post:

April 2026 - seasonality is doing its job

Last but not least..

By the way, we are seeing more and more projects involving BESS + PV, BESS + wind, and hybrid configurations. If you want to assess the revenue potential of such a project, contact us: contact@flexplum.com

Energy consulting by FlexPlum

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