He wants Congress to adopt a clean energy standard of 80 percent by 2030, in other words, that you'd have to get 80 percent of your energy from clean sources by the year 2030.
他希望国会通过一个2030年达到80%比例的 清洁能源标准。 换言之，各州将必须在2030年达到 80%的能源来自于清洁能源。