Turn Your Computer Off at Night

The energy savings can really add up. In one year, if you shut your machine off at night, you’ll save an average of $90 worth of electricity.

Insulate Your Water Heater

Hot water accounts for 13% of a typical utility bill, so improving efficiency goes a long way. Consider wrapping your old heater in a layer of insulation. For the nominal cost of about $15, an insulating jacket can reduce heat lost through the walls of the tank by 25-40%.

Choosing a better bulb

Switching from incandescent bulbs to compact fluorescent lights (CFLs) will cut your dependence on energy and save you about $25 to $60 per CFL. CFLs may be higher in cost, but each lasts ten to fifteen times longer than an incandescent that provides the same light, at a quarter to a third the cost per hour.