Arizona Governor Katie Hobbs on May 8 announced her support for Transwestern Pipeline’s planned Desert Southwest Pipeline expansion.
Arizona public power utility Salt River Project in August 2025 was joined by Arizona Public Service, the City of Mesa, Arizona, Tucson Electric Power and UniSource Energy Services in announcing commitment plans for Transwestern Pipeline’s Desert Southwest expansion project.
“Ensuring reliable and affordable energy for Arizona’s families and businesses is a top priority for my administration,” Hobbs said. “With existing pipelines fully subscribed, securing additional natural gas capacity is critical to supporting Arizona’s long-term prosperity. The Desert Southwest Pipeline will significantly increase our state’s energy capacity and diversify our energy resources. Arizona’s all-of-the-above energy strategy is ensuring we have the energy we need to expand our economy and deliver for working people in this state.”
Energy Transfer LP in December announced an increase in the transportation capacity of Transwestern Pipeline’s planned Desert Southwest expansion project to meet additional customer demand.
