2021 U.S.-Booked Air Volume: $18 million
Consolidated Global TMC: CWT
BTN estimates that conglomerate Koch Industries, one of the largest private companies in the U.S., in 2021 spent $15 million on U.S.-booked air travel. That estimate is about $3 million more than BTN’s estimate of its 2020 spend, making it one of the few companies on this list projected to have increased spending.
Koch does not report its emissions but claims companywide U.S. emissions since 2014 have decreased by 19 percent, representing more than 8 million metric tons of carbon dioxide equivalent. Koch is the parent company of pulp and paper company Georgia-Pacific and enterprise software company Infor, among others.