one of the best and easy ways without having to cut out alot of ur everyday stuff i.e a/c being a main one is to put a switch on ur hot waterheater line where u can turn it on and off and only turn it on about a half hr b4 u need hot water and then back off cause ur hot waterheater eats up the "ELECTRICITY" as it stays on as u all should know how a waterheater works it's off and on 24/7 so if u put a switch in so u can turn on and off ur self u will save a bundle