Does a surge protector use energy on its own?
They say disconnecting things like a computer, VCR, DVD player, phone charger, anything with LED's that stay lit, a video game console, an illuminated doorbell, GFI outlets, etc. can save energy. By my estimates (and I do stuff like this for a living), you could save anywhere from $0.50-$1.00 a month, depending on how many devices you unplug and how much your utility charges you for electricity.
Of course, then you're having to go back and re-set the time on your VCR, reconfigure your DVD player, crawl back behind the furniture to plug in your phone charger, re-wire your doorknob, etc. every time you want to use them. Not worth it, IMO.
If you really want to save energy (again, I do this for a living), here are some tips:
Make sure you're living in a place with double pane, tinted, thermal break windows. Keep them closed and locked whenever you're using indoor climate control.
In warm/hot weather, keep your blinds closed and pointed downward, so sunlight can't shine in.
Replace your traditional incandescent lamps with halogen type lamps. They cost a bit less than CF's or LED's but put out more color-neutral light and still save on energy costs. And there's no Mercury or hazmat suits involved if they break. And they last longer than CF's or LED's.
Heat your house with electricity, if possible - it's more efficient than gas or fuel oil. If you're worried about the
cost of energy rather than being "green," this advice might not apply - depending on where you live and utility costs.
Set your water heater at a temperature where you can run straight hot water in the shower and feel comfortable. If you have to run any cold water with it, you're heating it to an unnecessarily high temperature. For most people, 110 degrees F is plenty.
Use a dishwasher instead of washing dishes by hand. Uses more electricity, but uses MUCH less water. And make sure it's full before you run it.
Buy programmable thermostats for your heating/AC units. They're worth every penny.
Don't close doors and "seal off" rooms you don't use, like guest rooms. That actually makes your AC unit work harder.