Who are the biggest natural gas sellers in the U.S.? You might be surprised to learn that the biggest *sellers* are not necessarily the biggest *producers* of natural gas. Oh, you might recognize some of the names of the top sellers (BP, Shell, ConocoPhillips). But others might be more of a mystery (Macquarie, Tenaska, Sequent, and J. Aron & Co.). Would it surprise you to learn that BP (i.e. British Petroleum) is the #1 seller of natgas in the U.S., and has been for years?