Great energy saving tips are at the following link. I would do everything
you possibly can. For example I just got a new "Energy Star" refrigerator
and it is saving me $10 a month on my electric bill. Strange that a new
appliance could do the same thing while using less energy, but I guess they
figured out some way to make these thing more efficient. These suggestions
*really* help to lower energy bills.

Some things are expensive like replacing windows, others are cheap like
sealing leaks - caulking, etc.

Energy saving tips...
http://www.energystar.gov/