Our model battery (2 MW, 4 MWh, RTE 0.86, DoD 100%), optimised on DA + IDC markets, generated 69.9 kPLN in revenue.

January 2026 turned out to be the strongest January in the history of our analysis.

📊 For comparison - relative January (January 2026 = 1.00) performance over the years:

• January 2023 → 0.57
• January 2024 → 0.27
• January 2025 → 0.58

📈 This result is unusual, as winter months typically feature lower price volatility and therefore lower revenue potential for BESS. This time was different, driven in part by:

• unusually low temperatures,
• high volatility in the gas market, which translated into the power market.

Tell us if you'd like to lear more!

💬 Would you like to see a deeper dive into which days delivered the highest revenues and why? Let us know in the comments - we’ll be happy to prepare a detailed analysis and share the insights.

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January 2026 - a winter that positively surprised energy storage

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