Greenhouse Gas (GHG) Inventories. A GHG inventory comprises the first step toward managing emissions.  The inventory process and results supply local governments with baseline information on a community’s GHG sources.  The data can be used by community leaders to identify opportunities for governmental action and partnerships to achieve emissions reductions targets. The information obtained can also be used to understand where there are opportunities for energy efficiency, for the replacement of some or all of a community’s power supply with clean energy, and saving taxpayer money.  “GHG Protocol” www.ghgprotocol.org/about-us . The GHG Protocol establishes comprehensive global standardized frameworks to measure and manage GHG emissions from private and public sector operations, value chains, and mitigation actions.  “ClearPath” www.icleiusa.org .”New Tool and Step-by-Step Guide: Community Greenhouse Gas Inventories” www.mapc.org/planning101/community-ghg-assessment/ (MAPC is the Metropolitan Area Planning Council, which serves the cities and towns in the Boston metro area.)