1.  Slay the vampires.  Sounds strange, likely, but a lot of things that are left plugged in all the time draw a lot more power than you might think.  (TVs, VCRs, etc..)  Even just plugging all of that sort of thing into a power strip and turning that off when you aren’t using them can save you (on average) $75 a year.

2.  A computer consumes (again, on average) as much energy as 3 100 watt light bulbs.  Turn it off when it isn’t in use.

3.  Vacuuming your refrigerator coils twice a year increases the appliance’s energy efficiency by quite a bit.

4.  Keep your freezer full.  A full freezer functions more efficiently and uses less power.

5.  Keep your hot water heater set at no more than 120 degrees.

6.  Train yourself to turn off lights in rooms when you leave them.  This measure alone can cut your energy bill by 5-10 percent.  (Again, this is something I’ve seen in practice.  Once we managed to make it habitual, the savings were immediately visible.)