Comment 1 for bug 173235

Do you have any evidence that Compiz increases power consumption? All the tests that I've seen (although I haven't seen many - «http://<email address hidden>/msg01776.html» is one) suggest that the difference in power consumption between Metacity & Compiz is extremely small (in that test, 0.1W unless bluetooth or wifi were on, in which case there was no measurable difference).

There may be particular compiz plugins which increase power consumption. If we can locate these (powertop may be useful here), then we could easily provide a system to selectively disable these plugins when on battery.