This assessment seeks to identify opportunities for the USAID/Mexico Mission to address high?priority clean energy and climate change challenges in Mexico and provide the Mission with recommendations for the design of a new Mission clean energy and climate change program. Under President Calderon, Mexico has made climate change a top national priority and has integrated climate change into the country's development strategy. In addition to having signed the United Nations Framework Convention on Climate Change (UNFCCC) and its Kyoto Protocol, Mexico is the only developing country to submit a Third and Fourth National Communication to the UNFCCC with a detailed updated inventory of its GHG emissions and long term emissions trajectories.