What is a good energy conservation theme for banners, posters, etc.?

Question

I am trying to come up with a theme for a company function having to do with energy conservation. We're a utility co-op.

Answer 1

'Drive out the pollution and turn off the heat'

Answer 2

Picture of some of those windmill type things with the caption:

Wind + Energy, You can put THAT in your Pocket!

or something like that......

Answer 3

I'm having a tough time coming up with anything.

I was thinking maybe a poster with a light bulb, signifying energy going into a piggy back, saving energy for the future.

Answer 4

Maybe someone with a compact fluorescent bulb over their head  with a thought balloon image comparing the money savings from CF bulbs vs. incandescent.

Answer 5

"Every time you buy an SUV God kills a kitten"