Scope 1 and 2 emissions are direct emissions (like from a company’s own facilities and vehicles) and emissions from the energy it purchases. Scope 3 emissions, on the other hand, are those tricky, indirect emissions that stem from everything else in a company's value chain — from the goods and services it buys to the waste it generates. These can account for more than 70% of a company’s total greenhouse gas (GHG) emissions.