you only need one light to brighten your work area.
heating? wear more clothes if its cold, and open a a window if its hot! People in africa dont have air-con, just as santas elves dont have heating, just good clothes. Yeah sure, unplug stuff, or why not go green? Get a windmill in your garden (yard) or solar pannel your roof!!!!!!!!

Why thing about how to pay your suppliers less, when you could go green and pay them nothing ever ever again? No this isnt impossible, many people are doing it these days!

And if you cant go green, and really do struggle to pay your power bills, maybe you should be looking for a part time job.

And as a final note, i am in full support of going green. Generating you own power is the future!