I cut my energy bill in half since I bought my house 10 years ago. The first year I lived there my energy bill was over $1400 per year for my all electric house. I got it down to about $700 two years ago before the price of electricity jumped 20% in January of 2007.
I am constantly looking for new ideas to cut energy costs. Here is a list of the methods I have used to achieve this. Everything I have done so far has been simple and low cost solutions that I could do myself.