Soon our system will provide enough power that we end up with excess solar that we want to export to the grid. My question is, what triggers the system to start exporting.
We have two 48v Multis, two Smart lithium 200 AH 25.6v along with a pair of Mppts and the usual other accessories.
Once the batteries start reaching 100% the MPPT's start throttling down as there is no place for the solar power to go.
If its done on the batteries reaching 100%, then the batteries will not get a chance to go into absorption.
If its done after absorption, the manufacture setting for this is two hours. At that stage the sun may have gone.
The above options are automatic settings. Is it possible to have a virtual switch that can be turned On or Off remotely, depending on our needs for that particular day.
