The expected surge in liquefied natural gas export capacity in the United States is on course to boost gas consumption significantly, from around 18 billion cu ft right now to as much as 40 billion cu ft—and that 18 billion cu ft is already an all-time high. The United States turned into the world’s largest exporter of LNG in a matter of years as energy companies raced to build new liquefaction trains along the Gulf Coast in response to the surge in demand for a lower-emission alternative to coal. Last month, the U.S. became the first…