danvoner
If I tell you what I'm doing, it may provide some insight into what may work for you.
My setup is;
Solar, 5kW gen2 hybrid, 2x9.5 batteries, Zappi, ASHP.
I can't "hide" the Zappi from the inverter/batteries, for reasons I won't bore you with.
The objectives are:
Minimise day rate import, maximise export, not empty batteries into EV.
Basically, I charge the batteries to full every night (slightly less in summer, if we have one, to manage clipping), export all solar, empty any spare from the batteries in the evening. I use the pause charge option in the Giv portal, so that no solar goes to the batteries (ASHP is new, so I may need to tweak this in winter).
The charging bit is dead simple...
Setting up the discharge schedules took a bit of fiddling (and some maths). We don't want to end up with the batteries paused or empty, otherwise you're using day rate.
To achieve this, I've set up multiple, sequential discharge schedules...
I'm sure you can figure out what the other two are.
The thing here is, they only run if there's sufficient capacity available, so I'll never get caught short. Equally, I'm ensuring they run as much as possible.
Here's the activity log from yesterday, where the first two didn't run because we had higher than normal use in the day and some weather ⛈️...
Running it as one long schedule would mean you get all or nothing, whereas splitting it always gives the opportunity for some to run. Also, it gives things a chance to cool down. Three hours at full chat and things get quite toasty.
Regarding priorities, since I've been doing this, I've found smart charging always takes precedence.
Here's an example from the other night, hopefully you can see it cut short the last scheduled discharge...
I appreciate that's a lot to take on board, but equally it may give you some confidence to play about and see what suits you.
