Thank you!I'm in NSW, my current plan has only General Usage and Control Load 1. I'll investigate other plans and tariffs. The other option I'm researching at the moment: apparently Fronius inverter supports load management. And it should be possible to install relay and setup load management so that when available solar power exceeds defined level, e.g. 2 KW, it can be used for hot water heater. This option is cheaper than to install diverter. My hot water heater uses 3.6 KW, so if at least h ...