Southwest Gas Holdings, Inc., through its subsidiary, Southwest Gas Corporation, purchases, distributes, and transports natural gas for residential, commercial, and industrial customers in Arizona, Nevada, and California in the United States. The company offers tariff sales and transportation services. It also operates a pipeline transmission system, including an LNG storage facility. As of December 31, 2025, the company served approximately 2,281,000 customers with 1,224,000 in Arizona, 849,000 in Nevada, and 208,000 in California. Southwest Gas Holdings, Inc. was founded in 1931 and is headquartered in Las Vegas, Nevada.