ICLEI established a replicable framework that can be used by local governments throughout the country to attribute the observed changes in community GHG emissions inventories. Practitioners within cities and counties are now able to harness data to produce a more accurate depiction in changes to community-scale efficiency, communicate those trends more clearly, and use the data to evaluate the effectiveness of policies and programs. The project components are development of the Contribution Analysis methodology; application of the techniques of Contribution Analysis to a range of community types to illustrate the drivers of change in various communities; production of a “replication toolkit” which clearly describes the steps in the process, provides guidance and templates for additional communities to adopt and take forward; and distrbution of these new resources widely.