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Grid-scale BESS: Balancing Energy & Arbitrage

Revenue Potential · Utility-Scale BESS · March 2026

Grid-scale BESS: Utility-Scale Balancing Energy & Arbitrage — aFRR-optimized

This analysis examines utility-scale standalone battery storage (10–50 MW) in the German balancing energy market. The primary revenue source is aFRR with simultaneous FCR participation; additionally, day-ahead and intraday arbitrage revenues are included. Economies of scale starting at 20 MW lower the effective CapEx/kWh and significantly improve economic viability compared to smaller standalone systems. Optimal configuration: 20 MW · 20 MWh (1C rate).

12.8 %

Best IRR

20 MW · 20 MWh · 20 yrs

€ 6.5m

Best NPV

20 MW · 20 MWh · 20 yrs

aFRR

Primary Market

~41 % of revenue stack

8

Configurations

10–50 MW · 1C & 0.5C

Wird geprüft…

Note: All analyses and figures are based on simplified model assumptions and historical market data. They are for illustrative purposes and do not constitute investment advice. Project-specific analyses account for individual site parameters, current market prices, and financing structures.

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