Newbie - Best practise for Export

[SupraJames]

Hi All, been using PB for a month with my SolaX 3.7kW IES, Inverter is set to Self Use and I have Predbat managing the charge.

It's working well, and doing exactly what I wanted it to at the time, basically just figuring out what level to charge to overnight, leaving a gap for solar charge if sun is forecast.

I am on Octopus Go and my Outgoing export tariff has just been enabled, and since it's apparently Spring at the weekend, I'd like to start thinking about optimising Export.

Due to DNO limitation my Inverter is only 3.7kW but I have 7.1kWp of panels, so at the moment, PV is powering the house, then charging the batteries. My house load runs about 1kW during the day, so once the PV generation hits about 4.7kW, excess is sent to the grid.

Now - what I think I want is

• Set SolaX to feed-in priorty: PV covers 1kW house load, exports the rest of the available 3.7kW to the grid, and the rest charges the battery

My worry is that I put SolaX into this mode, will the Predbat plan know that this is happening, and correctly calculate the expected battery SoC during the day, or will it expect that the battery is being charged before export is considered?

I really don't know what I should be doing here to be honest! Am I overthinking this, and should I just put Predbat into Control Charge and DIscharge mode and let it figure it out?

[gcoan]

Predbat can't read the mode of your solax inverter.

If you have setup your export and inverter limits correctly, predbat should take account of your limit and manage the battery accordingly.

If you set plan debug to on there is a clipping kWh column on the plan that predbat manages to minimise your clipping as well as your electricity bill

[SupraJames]

Thanks! I was literally drafting a reply to my own message as this came in.

OK, so yeah, I was overthinking. I set Predbat to Control Charge and Discharge and manually set the export tariff to 12p and it started working some magic. Didn't get enough sunlight today to get into Clipping, but I will keep an eye on that tomorrow!

[gcoan]

predbat is magic!

try not to over worry about what precisely it is doing, it does a 99% better job than I would at managing the battery. Sometimes it doesn't get it quite as you would but these aren't too frequent