Limited additions to pipeline infrastructure and a slower expansion of LNG terminals on the Gulf Coast are expected to stymie U.S. natural gas demand in early 2023 before helping fuel the region’s export growth over the long term.

The Gulf Coast has become the epicenter for U.S. liquefied natural gas since the Lower 48’s first major export terminal started operations in Louisiana in 2016. The Center for Liquefied Natural Gas’ (CLNG) Charlie Riedl, executive director, said the dynamics that have pushed the region into its role are expected to accelerate within the decade, especially after Russia’s February invasion of Ukraine.

“I think all you have to do is look at the proposed projects that are currently approved for authorization to get an answer to how important the...