got your own solar water heater ??
No they're not very good for the area a standard solar water heater uses
and they often need a gas or electric boost to make the shower nice and toasty.
We're in Brisbane with an abundance of sunshine, still need boost.
Hang on are you talking solar thermal power storage, the molten salt stuff, don't think so, they're industrial sized.
I've looked at water distillation/purification and it takes a reasonable area to give a good quantity of water.
We've got some solar voltaics but you need a large array to make a decent amount of power,
no way is it free energy.
Go for the wind power, get some batteries, check out Edison batteries, NiFe, made in China, run some of your devices with DC - lighting, computer(s), audio, etc, collect farts to run a generator.
The best way to heat is good thermal building design, insulation and thermal mass collecting solar energy.
Sell up and move down under or just suck it up.