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hour system Variation

Which hourly system is best suited for Multi-Market trading in Germany?


In our case study we assessed different hourly systems and their performance in Multi-Market Trading, where we combine Wholesale Arbitrage on the Day-ahead, Intra-day and continuous Intraday markets with Ancillary Services, such as FCR.


The systems we investigated have the following specifications:

  • Nominal power: 10MW

  • Nominal capacity: 10MWh (1h), 20MWh (2h), 3 MWh (3h), 4 MWh (4h)

  • Included markets wholesale markets: Day-ahead, Intra-day, Continuous Intra-day

  • Included Ancillary Services: FCR (Frequency restoration reserve)



hour system variation

First of all: what is the difference between a 1h and a 2h system? For example, a 1h-system can supply us with its nominal power for 1h, i.e. energy capacity and power capacity have a ratio of 1:1h, which is the case for a 10MW/10MWh system, for example. Similarly, a 2h system can supply us with its rated power for 2h. You see the pattern, and know how it works for a 3h or 4h system right?

Assessing the performance of different multi-market systems

To compare the 4 systems, we marketed them using our suena Autopilot’s forecast-based multi-market strategy. This combines the use of ancillary services, in this case FCR, with the use of battery storage for arbitrage in the day ahead auction, intraday auction and continuous intraday market. The underlying optimizer evaluates diffferent dispatch schedules and returns the one that maximizes the trading income.

For the optimization process we employ market forecasts for optimization and actual prices for settlement to achieve realistic outcomes, without assuming perfect foresight. Trade execution on the continuous intraday market is approximated using the ID1 price index.



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