German BESS Performance Review: 2025 Results

PortfolioEnergy-optimised virtual BESS achieves highest revenue in the German market

The 2025 performance cycle for grid-scale battery energy storage systems (BESS) in Germany has concluded, with PortfolioEnergy delivering market-leading results.

Top Performers in the 2-Hour Segment

2025 Performance Data for Germany

Germany

A 2-hour virtual BESS using PortfolioEnergy's commercial platform achieved approximately 110 k€/MW/a (301 €/MW/cycle), the highest among benchmarks at 1 cycle per day—both in annual revenue and revenue per cycle.

Annual Revenue

Unit: k€/MW/a (= €/kW/a)
Enspired portfolio mean (1.58 cycles/day)1
128
PortfolioEnergy (1 cycle/day)2
110
LF Energy RTC-Tools (DA price taking, 1 cycle/day)3
77

Revenue per Cycle-MW

Unit: €/MW/cycle
PortfolioEnergy2
301
Enspired portfolio mean1
222
LF Energy RTC-Tools (DA price taking)3
211

1Enspired 2-hour BESS index for DE (BESS 1.51–3.5 hours in duration), at 1.58 cycles per day. Page accessed February 2, 2026. Warning: 1.58 cycles/day (577 cycles/year) exceeds warranty limits for many BESS installations. While some systems can accommodate higher cycling, many warranties are limited to 365 cycles/year.

2The PortfolioEnergy virtual BESS used approximately 1 cycle per day at a round-trip efficiency of 90%. Computed using a backtest with optimisation using Montel forecasts and EPEX order book data. Auctions cleared with settled prices. Intraday continuous trading was simulated by introducing a multi-second delay (order book time) between accessing the order book and matching orders. Iceberg orders and user-defined blocks were not considered.

3LF Energy RTC-Tools, day-ahead price taking. Open-source implementation. Results for a 2-hour battery with 1 cycle per day.

To obtain a backtest with the specifics of a particular asset with the PortfolioEnergy optimiser, please contact us at info@portfolioenergy.com.

Why PortfolioEnergy Delivers Leading Performance

PortfolioEnergy's optimisation platform combines advanced mathematical optimisation with real-time market intelligence and robust risk management. Our approach delivers consistent, market-leading performance in both day-ahead and intraday markets.

Real-Time Adaptation

Continuously adapts to changing market conditions, price forecasts, and plant constraints to maximise revenue while managing risk.

Advanced Optimisation

Leverages probabilistic forecasting, nonlinear physical modelling, and market impact analysis for superior decision-making.

Risk Management

Proactive identification and mitigation of operational and market risks to prevent costly events that can significantly impact annual performance.

Multi-Market Trading

Intelligent co-optimisation across day-ahead and intraday markets to maximise total revenue from price volatility.

Interested in learning more about how PortfolioEnergy can optimise your BESS assets? Contact us at info@portfolioenergy.com to discuss your requirements.