Technical Classification
Definition
Investor perspective on revenue stacking — simultaneous participation of a battery storage system in multiple electricity markets (wholesale, balancing energy, capacity) for revenue diversification and risk reduction. Practical report from one of the largest infrastructure investors.
Technical Background
Macquarie Asset Management operates a >2 GW BESS portfolio worldwide. Revenue stacking as commercial reality: 40-50% of revenues from balancing energy (FCR/aFRR), 30-40% from arbitrage (intraday/day-ahead), 10-20% from capacity markets. Simultaneous market participation requires intelligent dispatching and co-optimisation.
Risks
Scheduling conflicts: FCR reservation blocks capacity for arbitrage. Regulatory stacking restrictions in some markets. Forecasting errors in optimal allocation. Degradation costs from frequent switching between services.
Standards & Regulations
Pre-qualification requirements under EU EB GL. National regulations: StromNZV (DE), BSC (UK), Grid Code Requirements. MiFID II (trading regulation). REMIT (Market Integrity Regulation).
Assessment Methods
Portfolio backtesting with real operational data. Co-optimisation algorithms (Mixed Integer Programming). Comparison of single-service vs. multi-service performance. KPI tracking: Revenue per MW, Availability, Roundtrip Efficiency.
Typical Shortcomings
White paper character with marketing bias. Simplified presentation of constraint effects. Scheduling losses and opportunity costs underestimated. Degradation effects in multi-service operation not transparently presented.
Relevance for Investors, Insurers & Operators
Investors: Validation of own stacking thesis against peer experience. Insurers: Understanding of operational complexity and failure scenarios. Operators: Benchmark for own marketing performance and dispatcher efficiency.
Assessment by PV-BESS-Assessor
The Macquarie white paper offers a practical investor perspective on revenue stacking. As a major infrastructure investor, Macquarie brings direct project experience.
Implications for Investors
Directly from an investor perspective: Describes the commercial reality of multi-market access. Shows revenue diversification as a risk management strategy. Portfolio data provides empirical validation.
Implications for Assessments
Valuable for bankability assessments as investor-side confirmation of revenue stacking feasibility. PV-BESS-Assessor references when evaluating marketing strategies.
Technical Risks
White paper with marketing character. Conflicts between FCR reservation and arbitrage trading are presented in simplified form. Real scheduling constraints underestimated.
Regulatory Significance
Relevant for discussion on pre-qualification requirements for balancing energy and potential stacking restrictions by grid operators.
Conclusion by PV-BESS-Assessor
PV-BESS-Assessor urges caution when adopting optimistic stacking scenarios in assessments. Real constraint effects are greater in practice than presented in the white paper.
Last updated: 2026-06-16