Hi Simon,
no, this is not simulated. It’s a screenshot taken from a real, productive system. (In fact my private FENECON Home 10 system - see this video: Video: Speicher im Winter günstig aus dem Netz laden)
If you are interested in the actual data of the optimization, you can see (and adjust) the JUnit tests in the Code → https://github.com/OpenEMS/openems/blob/develop/io.openems.edge.controller.ess.timeofusetariff/test/io/openems/edge/controller/ess/timeofusetariff/optimizer/SimulatorTest.java#L179
Regards,
Stefan