Sounds about right otherwise PVTs would be far more mainstream. I think the point in that is that the energy requirement for hot water is a fraction of the dema

Sounds about right otherwise PVTs would be far more mainstream. I think the point in that is that the energy requirement for hot water is a fraction of the demand for electricity. But perhaps with a system like this, the heat can be more useful when used as a battery and the sun isn't shining. As ever the LCOE wins, and whatever time of day the energy can be used at.