Here 12ct difference and just under 4,000kWh heat pump electricity grid consumption per year. Since in the future (because this delta was only recently fixed) I will use photovoltaic electricity in the household even more instead of with the heat pump, it will become even clearer soon.
As soon as a few things have settled here and perhaps there are also several providers in this direction, I will probably switch to Tibber or similar because then I can control the times even more precisely. Monetarily, it probably only makes a minor difference, for me it is also a hobby.