For no money down and the first time ever, the Woodbridge Housing Authority in New Jersey is using wind energy to make its housing developments more efficient, according to a news release. It's also the first time that the U.S. Department of Housing and Urban Development (HUD) has approved a wind-energy project. An energy supplier is paying for the water and energy efficiency improvements, which are guaranteed to save the housing agency more than $6 million over 15 years and be the equivalent of planting 5,000 trees or taking almost 200 cars off the road. The agency plans to use the savings to invest in more energy conservation initiatives. In recent years, Woodbridge Township has also installed solar-powered streetlamps, converted its municipal fleet to bio-fuels, and established energy audits at all municipal facilities.