I am looking to connect my ESS to the public grid and I am looking to find the best way to both generate that power and to convert it into the best format as efficiently as possible.
I currently do not have a Multiplus or Quattro installed but have a Cerbo GX with three MPPT controllers totaling 2,400 watts of PV power (With 1,200 watts of panels installed but more on the way), a 1,200 watt phoenix inverter, BMV-712, smartshunt, and a Blue Smart IP22 30A charger.
My question is it more efficient to install a Multiplus/Quattro and purchase a device such as a grid tie inverter or whatever is necessary to allow me to connect my ESS to the public grid in the US. I have already specked out that my power provider offers Solar Buy Back so I am set there. I am looking for the best way to connect and convert the two systems together for a US home. Or do i simply get the grid tie inverter and directly connect the solar panels to that using a PV Inverter.
My goal is to power my home with solar and maybe wind or other renewables, use the batteries for overnight power or for a grid failure and then only switch to grid power if i am not producing enough power or the batteries fall below a SOC set point or a market price. The market price isn’t critical but would be nice.
I currently have the inverter connected to a couple circuits in my house which are isolated from the grid running my fridge and freezer and network infrastructure along with 75% of the other house loads. I currently do not have the AC or Dryer powered via the inverter as they will require additional capacity.
Any help or info would be amazing as I am installing all of this on my own.