Eco Home is this fantastic website that my friend showed to me. Basically, you just tell it all the info about your home and it gives you FREE estimates on things you can do to make your home more green and energy efficient. The best thing about it is my husband and I were able to do some of the suggestions for less than $100 and it has been saving us almost that much a month on our utility bills! We've been putting the money we saved away for a second honeymoon :)
Check it out! You've got nothing to lose, it's FREE!