Efficient battery control in the German continuous intraday market
研究了在德国连续日内市场中，利用电池进行套利的七种实用交易策略，发现高级决策规则能实现6.6%至10.8%的年净资本回报率，投资回收期4.1至6.7年。
On the way towards a green economy with net-zero emissions, electricity storage systems play a crucial role in the transformation process of the energy system. But a few years ago, research repeatedly found that arbitrage in the German electricity spot market does not amortize investment costs. Due to a strong decline in battery prices and an increase in price volatility in recent years, the break-even point might have been exceeded now. This paper compares seven very practical trading strategies with batteries in the particularly volatile German continuous intraday market with hourly products, which take advantage of its multidimensional structure. We find that simple benchmark strategies are outperformed by more advanced decision rules, which apply an alpha-stable, additive, stochastic model to quantify expected short-term developments. Depending on the investment costs and technical conditions, we achieve a net capital return rate between 6.6% and 10.8% in 2024 and the investment amortizes after 4.1 to 6.7 years compared to a risk-free investment; in a sensitivity analysis these prove to be stable values. We also point out the potential for further increase in profit.