Awesome advices, guys, thanks a lot.
@ David: I got that device from energysaver.net.au, so far performs well, and it's giving me a good idea of what I'm spending and where.…

Heya mates,
I'm looking to improve the way in which I save energy.
So far I've done the whole insulation, windows upgrading, and I have a small wind turbine installed. Well, it's…