The City is a member of the California Climate Action Registry. The California Registry provides leadership on climate change by developing and promoting credible, accurate, and consistent GHG reporting standards and tools for organizations to measure, monitor, third-party verify and reduce their GHG emissions consistently across industry sectors and geographical borders. The City has compiled CO2 emissions inventories for 2004, 2005, 2006, and 2007. The City will register and verify these inventories using the CCAR process. The City's proprietary departments (LADWP, Port, LAWA) are also members of CCAR and compile their own inventories.
Between 1990 and 2007, the City reduced its CO2 emissions by 7%, despite an approximate 12.5% increase in the City’s population. Two of the primary reasons for the decrease are the City’s generation of cleaner electrical power (through the expansion of renewable energy sources) and the conservation of energy used in City buildings.