Southwest Gas Holdings, Inc., operating through its various subsidiaries, is primarily engaged in the delivery and transportation of natural gas to customers across Arizona, Nevada, and California. The company's operations are segmented into Natural Gas Distribution, Utility Infrastructure Services, and Pipeline and Storage. Beyond its core gas services, it also offers specialized utility infrastructure support, including trenching, the installation and replacement of subterranean pipelines, and ongoing maintenance for energy distribution networks. As of December 31, 2021, its extensive customer base totaled 2,159,000, serving residential, commercial, industrial, and other natural gas consumers. Founded in 1931, the company maintains its corporate headquarters in Las Vegas, Nevada.