EQT Corp., the nation’s largest natural gas producer, again cautioned against limiting U.S. liquefied natural gas (LNG) exports, saying such a move would further increase prices in the Northeast and harm the environment.

CEO Toby Rice said a request to review the impact of LNG exports on domestic prices and halt pending permit approvals in the meantime was misguided. A group of 10 senators, mostly from New England, sent a letter to U.S. Department of Energy Secretary Jennifer Granholm earlier this month seeking the review. Natural gas prices in the region have neared $30/Mcf, while prices across the rest of the country are closer to $5. 

In a strongly worded, six-page rebuttal, Rice told Granholm that there are no active export terminals in New England creating incremental...