Bill H.R. 2336 or the Green Resources for Energy Efficient Neighborhoods Act of 2009 (GREEN Act), which was recently reintroduced in the House by Representative Ed Perlmutter (D-Colo.), authorizes new federal resources for green affordable development while providing incentives to the private sector to invest in green affordable homes for low-income people.
The GREEN Act would require the U.S. Department of Housing and Urban Development (HUD) to go green and adopt minimum building efficiency standards with rewards for higher performance. To jumpstart these efforts, HUD recently issued a Notice of Funding Availability (NOFA) to public housing authorities (PHA) applying for the Capital Fund Recovery Competition Grants under the stimulus.
The NOFA requires that if a PHA wants to compete for $300 million to be used for new construction or substantial rehab, they must use select elements of Enterprise Green Communities Criteria.
There are a few more details here.