[sheeny (Al)]

G'Day Alex,


I assume your HW service is 240V? Therefore you'll need an inverter to convert your solar DC voltage to 240V AC. How do you power your HW service now if not from the Grid? Generator?


Now I don't think you can just connect the inverter to your HW heater either. It needs some smarts to tell it when the water is up to temp and to divert the electricity elsewhere, so you aren't boiling water and making steam.


I do exactly this with my solar and HW service, except that I am connected to the grid. To do this I use a Catchpower. It prioritises solar power to household demand first, then to hot water. Once up to temp, the excess power is exported to grid as normal. It allows for manual overide if you haven't had enough sun, and is fully programmable.


Al.