To get things ideal is always rather complicated.
When I have extra, it automaticly dumps to heat.
If were home... and aware of the fact, then we do laundry - we vacuum (if necessary) - or pump water. (pumping water is quite a nice way to dump power)
Refrigeration could be handy.
Unless your very wealthy or have tons of time on your hands.... automating it all seems impractical. The trick is pay attention, use big loads when the power is available - and have a reliable way to dump power in an automatic way to save your batteries I think.