In the US, progress is somewhat more decentralized, though new national policies have been adopted, including Corporate Average Fuel Economy (CAFE) standards for automobiles. The US also is set to become energy independent, owing to the rise of shale oil and gas, with diminishing reliance on coal already bringing down per capita carbon emissions.
中国的十二五规划在这一领域设定了雄心勃勃的目标。美国的进展更加分散，尽管新的国家政策已被采纳，包括汽车行业公司平均燃料经济（CAFE）标准。美国还计划借页岩油气增加之东风成为能源独立国，而对煤炭依赖程度的下降已经拉低了人均碳排放量。