I created an HA add-on : OpenHEMS.
Concretely the solution allows to automatically trigger the electricity consuming appliances at the best time. It’s a step over EMHASS and it is using EMHASS but it’s not in an stable version. It manage with solar panel or not. You can have multiple offpeak timeslot with differents prices.
I would like to make known and have feedback (get help?) on this application.