I was thinking, since so much power use at home involves heating or cooling, why not just store your energy as heat?
A house could look something like this:
The grey line is a segmented motor controlled mirror that concentrates sunlight at the tower to the right.
The roof slopes away so that the sun doesn't shine on any part of the house during the day.
Heat is stored in the blue thing(no it's not the pool), and used directly for heating water, cooking, heating the house etc. (an absorptive cooler let's it be used for refrigeration too)
Generating your now much diminished electricity needs shouldn't be a problem.