EcoMotion has been developing Greenhouse Gas Inventories since 1991 when Ted Flanigan was a member of the original Urban CO2 Reduction Project of the International Council for Local Environmental Initiatives (ICLEI). This work included the first European inventories (Copenhagen, Helsinki, Ankara, Saarbrucken, and Hannover) and the first North American inventories including Portland, Oregon.

Since then ICLEI has fully developed the CACP software, easing the inventory process with agreed-upon protocols and accounting methods. In the past few years, EcoMotion has prepared GHG inventories for 9 cities and one tribe: Palm Desert, Brea, Blythe, Cathedral City, Desert Hot Springs, Indian Wells, Palm Springs, Rancho Mirage, and Indio, and the Agua Caliente Tribe of Cahuilla Indians. In each case, over 100-pages of technical documentation supports the inventory, as does the EcoMotion team, at the ready to interpret its results as a precursor to effective climate action planning.