美国人口占世界总人口的6％左右,而能量消费将近占全世界的35％。1971年美国一次能源(煤、石油、天然气、水力和原子能等)的总消费量为170亿百万大卡,折合标准煤(每公斤低位发热量为7000大卡)24.3亿吨,平均每人每年约12吨。能源的消费结构大体如下:石油41%天然气34%煤19％水力、原子能6％合计100%能量消费按使用部门分:工业32%发电25% The U.S. population accounts for about 6% of the world’s total population, while energy consumption accounts for nearly 35% of the world’s population. In 1971, the total primary energy (coal, oil, natural gas, water and atomic energy, etc.) energy consumption in the United States was 17 billion kcal, equivalent to 2.43 billion tons of standard coal (7000 kcal per kilogram of low calorific value) About 12 tons per year. The consumption structure of energy is roughly as follows: Oil 41% Natural Gas 34% Coal 19% Hydropower, Atomic Energy 6% Total 100% Energy Consumption by Utilization Sectors: Industrial 32% Power Generation 25%