The City of Dallas has been going Green through many initiatives. The most important is that Dallas, TX now has new building standards and they are Green, and we're talking both commercial and residential buildings.
"Dallas is the number one municipal purchaser of renewable power in the nation, boasts the largest clean vehicle fleet of any city in Texas, and is the only pilot city chosen for the EPA's Sustainable Skylines Initiative aimed at improving air quality."
You can't get much Greener than that these days, though there are still improvements to be made. If you would like further information about Dallas going Green, you can go to their website.