If you want to reduce your carbon footprint turning off devices won't really do it.
If you use your computer for say... only 20 mins a day it certainly makes sense to turn it off, but it's apparent that most of us live on the things, so it isn't going to make that much difference in the long run.
Also you've got to understand the concept of where your power comes from. It comes from a giant plant. If you only use 20 dollars less electricity it isn't like they shovel less coal in the generator. They use the same amount at all times. It only makes a difference if there is enough of a shift to where they can close a whole plant down, or run it at a fraction of capacity. And as nice a thought as personal rationing is, that isn't going to make a difference unless literally everyone does it, and that just isn't the case.
The solution is federally mandated restrictions.... light bulbs can only use this much power, heating and ac systems have to be this efficient, power plants have to be hydro-electric, solar or nuclear, ect.... And the republicans fight that sort of legislation every step of the way, so there's nothing we can do. Just enjoy the ride while we destroy ourselves in the name of greed.