Upgrading a home to be more energy efficient is easier than ever. The hard part might be figuring out which homes on your block haven't already gone green.

This home doesn't look much different than others in the neighborhood. But there is one big difference, it's making 80% of its own power.

No matter what you spend there's nothing but upside potential. You'll help save the environment and your money.

The additional costs for building a home like you just saw run about $50,000.

That investment could pay for itself in 10 years.