Today there are “expensive” (orange) hours in the evening, so VVB stands and waits until 0000 when the hours after midnight are “cheap” (green). But the problem is that the green hours here are more expensive than the orange ones. It seems that the algorithm only takes into account prices within the same 24 hours, not the next. It should be a simple fix to include the next 24 hours prices as soon as they become available.