Keeping an eye on this as more and more state governments are legislating similar goals: http://www.architecture2030.org/

Here’s the gist of the Challenge:

“Architecture 2030 has issued The 2030 Challenge asking the global architecture and building community to adopt the following targets:

• All new buildings, developments and major renovations shall be designed to meet a fossil fuel, GHG-emitting, energy consumption performance standard of 50% of the regional (or country) average for that building type.
• At a minimum, an equal amount of existing building area shall be renovated annually to meet a fossil fuel, GHG-emitting, energy consumption performance standard of 50% of the regional (or country) average for that building type.
• The fossil fuel reduction standard for all new buildings and major renovations shall be increased to:

  60% in 2010
  70% in 2015
  80% in 2020
  90% in 2025
  Carbon-neutral in 2030 (using no fossil fuel GHG emitting energy to operate).

  These targets may be accomplished by implementing innovative sustainable design strategies, generating on-site renewable power and/or purchasing (20% maximum) renewable energy and/or certified renewable energy credits.”