Our solar diversion system will automatically divert excess solar based on a configurable priority. First, the house batteries will charge, then the hot water is heated, then the EV’s will charge. Finally any excess is exported to the grid. The hot water and EV solar diverters will automatically use solar if available and off peak night rate if needed. This system is completely set and forget. Due to the amount of solar diversion, our self consumption is high and export to grid relatively low. Living rural, we've had a few 6+ hour power cuts since install, and the system has backed up our essential loads perfectly.