sentence1: 36 AC usage nationally for mercury control from power plants should be roughly proportional to the total MWe of coal-fired facilities that are equipped with the technology (this assumes an average capacity factor of 85 percent and other assumptions of Tables 4-4 and 4-5) and true is true and true is true and true is true and true is true and true is true .
sentence2: Power plants' mercury control AC usage is higher than total MWe from coal facilities.