Southwest Gas Holdings, Inc. is an energy holding company based in Las Vegas, Nevada. Southwest Gas Holdings, Inc. owns two primary operating companies, Southwest Gas Corporation and Centuri Construction Group, Inc. Southwest Gas Corporation is a regulated utility and provides natural gas service to more than 1.9 million residential, commercial, and industrial customers in most of Arizona and Nevada, and parts of northeastern and southeastern California. Centuri Construction Group, Inc., is a full-service underground piping contractor that primarily provides utility companies with trenching and installation, replacement, and maintenance services for energy distribution systems, and develops industrial construction solutions. Centuri Construction Group Inc. operates in major markets across the United States and Canada.