How to connect battery to solaredge inverters

Hardware
1

Hi there,

I have setup my home with a solar panels system with a SolarEdge inverter WaveHD 6KVA.
Everything works fine thanks to the HACS https://github.com/binsentsu/home-assistant-solaredge-modbus component.

Now I want to add to my system a battery.

1/ A direct solution would be to add a supported SolarEdge battery, by DC coupling.

  • LGChem High voltage batterie
  • BYD High voltage batterie
  • 48V SolarEDge

All of those limited but supported batteries a good but expensive

2/ Another solution is to have a independent solution with a system (battery + inverter / loader), by a AC coupling.

This is an independent solution, you can select the best cost/efficient batterie, but you need to have an extra inverter/loader in addition to the SolarEdge one. Sync of both inverter will be done by home assistant.

  • You have to pay 2 times an inverter/loader.
  • You have power lost when going from PV-DC to AC then to DC-Battery.

Q1/ Does anyone has a better solution that 2/ ?

  • by at least connecting the PV-DC with the PV-Battery (with maybe a MPPT)
  • or by using the SolarEdge inverter only, why the solarEdge inverter need to know that is a battery ? if you control the battery from HomeAssistant to tell him that you need to provide x kw ?

Thanks a lot in advance

2

Did you solve this? If not you can modify the solar edge configuration in the device list

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In the Modbus options you just need to activate the battery support. After that, a new battery device is available

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