ultrasbz

Thank you so much for the help, everyone! Just a few more things to clarify: 1) Regarding the low battery threshold that would make the inverter switch to grid. Do you set it as a voltage or a percentage of the SoC? I know voltages can be problematic for LiFePO4 due to the flat discharge curve where 30% and 80% can be about the same voltage. On the other hand, for SoC percentages you need to have communication between the inverter and battery BMS, and I've heard that even popular BMS's like the JK BMS isn't always very accurate and can suffer from drift. It seems that in terms of SoC the consensus is the Victron Smart Shunt is the best but then I don't think it can be connected to the Deye to let it know the SoC. What is your setup in this regard? 2) Let's suppose the max power I can take from the grid is 5 kW (contract limitation) and my inverter is 5 kW Deye so maximum I could use on the "essentials circuit" is 5 kW. Does this mean that it possible to use on the "non-essentials circuit" a load as high as 10 kW where the power would be combined as the max 5 kW from the grid + supplemented by the inverter with the max 5 kW from solar/batteries?

I see. So it sounds like I understood correctly. However, in my case, as I want to be a prosumer and will have an arrangement with the utility company to sell them energy as well as a special bidirectional meter, as you pointed out in Sc00bs reply, setting it to 0 in this instance would not be a problem. I wonder if the value even matters at all. I mean it sounds like I'd save some money at night by not pulling 20W from the grid.

Thanks for the replys guys! @Sc00bs So to clarify, the "zero export power" value is actually a small amount of power we intentionally take from the grid at all times to ensure the meter won't trip when we are not allowed to export/feedback energy back to the grid? Did I understand that right? If so, I'm guessing the reason has to do with the meter's tolerance around what the "zero point" is. Also, if this is the case, then for a value of 20W it'd mean a daily grid consumption of 480 Wh or monthly 14.4 kWh even if we have batteries just so we keep the meter happy? Is this the "cost of doing business" so to speak? In that case I'll certainly want that set to 0.

Hello, I am planning to build a 6 kW hybrid solar system that would have 48V batteries and also export excess energy to grid. I am currently researching which inverter to choose and I am tempted to go with Deye. However, after reading the manual and forums as well as watching a lot of youtube videos it is still unclear to me if priorities can be set up such that: 1) if solar is available use that first 2) if no solar (night), then use only batteries (until a low threshold is reached) 3) only as a last resource use the grid 4) in all cases, excess solar should be exported to grid 5) never use grid to charge batteries Some other chinese inverters like the Easun have the SBU mode (solar-battery-utility priority) which is pretty self explanatory, but for the Deye I'm having a hard time figuring out if an equivalent setup can be achieved. I also see that Deye supports "non-essential loads" circuit that requires a CT as well as an "essential loads" circuit where the loads get connected through the inverter. It is my understanding (correct me if I'm wrong) that the non-essential side would still consume at least a small amount of grid energy even if it is set to last priority as it would be necessary for the CT to record such a consumption before the inverter would adapt to force only solar/battery energy usage. In this case, am I right in saying that if I want truly 0 grid consumption I should just connect all loads (house, everything) to the "essential loads" circuit and just non bother with the "non-essentials" at all? Thank you