I've lived on solar power out in the bush for years (tho I'm back in the big smoke now, just for a while) so I've learnt to be frugal with my power use. I could go on for pages but I'll suggest a few tips I don't think have been mentioned yet:
Wrap it up!!! The fridge: I did my city one with alfoil and cardboard. It also looks nice (less white-goodlike). Also set it to a warmer temperature, and disconnected the wiring to the butter warmer in the door.
Wrap up the hot water storage tank! This one I did by making a box around it and filling it with fibregalss insulation.
The Bath! I removed the side covers and glued sisalation to the bath all around (on the outside). And then filled the surround with bulk fibreglass insulation before replacing the cover. THis lets my bath stay hot for much longer before I have to top up with more hotwater.
Every ceiling, every wall of every room is insulated.
Compact fluro lights are great, but dont overlook LEDS. Outside christmas strings of colour LEDs look pretty, work well for verandah/garden lights, and barely consume any power.
When the weather's good I cook outside, with the sun and a homemade boxcooker. Its all here at the site uu uu uu dot solarcooking.org
this is a great site, solar cooking is a great, inexpensive DIY hobby.
When building, put your windows on the north and south walls, never the east and west
I'd go on for hours, but just these few tips can do a lot