Last summer, we weatherized under the weatherization program in the Act 3, 000 American homes.

WHITEHOUSE: Vice President Biden on Congressman Barton��s Apology to BP

We stopped at the home of Ida Dockery whose home was recently weatherized.

WHITEHOUSE: Our Top Stories

The operating assumption is that weatherized homes that perform better than a pre-determined benchmark are eligible for salable carbon credits.

FORBES: Using Carbon Credits To Pay For Energy Retrofits