DT Midstream announces ‘successful’ Guardian pipeline expansion open season

DT Midstream (DTM) last night announced that it has closed a successful binding open season to award expansion capacity on Guardian Pipeline. Guardian awarded capacity to five shippers totaling 328,103 Dth per day with a targeted in-service date of November 1, 2028. The newly awarded capacity, combined with expansion capacity previously awarded in July 2025, totals 536,903 Dth per day of expansion capacity on Guardian which is an approximately 40% increase from Guardian’s current capacity. “The strong interest in this expansion capacity is an indication of the growing demand for natural gas in Wisconsin and the Upper Midwest region where our pipelines are well-positioned,” said David Slater, President and CEO.