Cambridge has adopted policies to encourage and require energy efficient buildings as a strategy to achieve Cambridge’s goal to reduce the greenhouse gas emissions that cause global warming.
Eighty percent of Cambridge greenhouse gas emissions come from building energy consumption. The City has adopted policies that require all large construction to be green and energy efficient, as a strategy to address the City's greenhouse gas emission reduction goals.
In August 2010, based on recommendations of the Green Building/Zoning Task Force, the City Council adopted a green building zoning amendment, which created Article 22 of the Zoning Ordinance, Sustainable Design and Development.
Article 22 address the following elements:
- Green building standards for large development/LEED
- Zoning to encourage green roofs
- Zoning to facilitate use of passive energy efficiency measures such as exterior walls insulation, overhangs and sun-shading devices
- Solar energy systems
- Wind energy systems