Hi all, I couldn’t find another post that discussed this although apologies if there is one already!
Anyway, in the image below you can see ‘dots’ that show the general flow of energy in my home.
Something I noticed is that these ‘dots’ are always showing no matter the energy production. For example, despite it currently being pitch black there’s apparently energy going back to the grid? Is this intended?
I understand that the slower the dots move, the lower the production, however I’m not quite sure if there’s any configuration beyond this.
My sensors are imported from a Solis cloud integration which seems to work great, however the Solis app has the advantage of no longer showing you energy coming from your solar panels when production is near next to nothing.
It would be good to know if there’s a way to stop these energy ‘dots’ when production is negligible or reaches a certain threshold, thank you for any suggestions!
Aren’t you mixing up energy (kWh) and power (W)?
This graph is for energy produced/consumed in the selected period of time. The speed of the dots relates to the amount of energy for the selected period en relation to the total.
I have a Solis hybrid inverter with batteries. I read the inverter directly via Modbus on the comms port, and I also read the battery console port and sniff the CANbus comms between the two, so I always know exactly what is happening.
I regularly see a small battery discharge current when at the Over Discharge SOC, which the inverter inflates to a much higher figure.
My conclusion is that the Solis Hybrid inverter remains running at night, and consumes around 60 W. This figure is normally deducted from any incoming solar PV, but at night power comes either from an active battery discharge or from grid import. The issue for me is the inverter does not fully shut off the battery discharge at OD SOC, and also incorrectly reports the battery discharge by adding around 100 W. This is, I assume, due to challenges involved in accounting for the inverter power draw, which apparently becomes confused in some circumstances.
I address the problem by running an automation that, when necessary, forces the inverter to run a low battery charge for one minute. This, most of the time, then drops into a zero battery discharge state.
Depending on your exact arrangement, your phantom solar night generation may actually be phantom battery discharge.
