Now here's a novel idea, Pembina is offering wind power certificates to offset the electricity that your computer will use. It seems like you pay them to balance the carbon offset of the power that your computer will use over the course of your laptop or desktop's lifetime. The figures they are using to caclulate emission seem low - 30 watts for a laptop and 120 watts for a desktop which they got from Tufts University. Doesn't seem right, with the new processors from Intel and AMD coming in by themselves between 160 and 192 Watts. This puts the typical system up in the 250 watt range.