Having your own “tank” makes you get past the mystique and actually become a competent electricity consumer. You plug up leaks and avoid ridiculously wasteful uses. For those of us without a physics brain, mains electricity can seem completely mysterious. It comes, you get a bill, you have no real idea what the numbers in the bill mean except for the ones with a dollar sign in front of them, and no real hope of figuring out whether you’re spending your money on things you actually want, or running it down some invisible electricity drain.
Gavin over at Greening of Gavin is running a wonderful series on electricity 101, that gives even physics dyslexics the means to buy what they want in terms of electricity, leave what they don’t want and pocket the difference. Click the image to go there. It’s fun.