I like the ecovillage. Nice! I saw a program on a tv series "Growing a Greener World" that highlighted what I would call a "subdivision" centered around an organic farm, maintaining their own rainwater filtering systems, CSA, farm internships, various sustainable farm-oriented business funding, their own school system, etc. I'm not sure about passive energy systems. It's located in Lake County, IL - I think in the Naperville area.
