Sempra is a North American public utility holding company based in San Diego, California. The company is one of the largest utility holding companies in the United States, with nearly 40 million consumers. Sempra's focus is on electric and natural gas infrastructure. Its operating companies include Southern California Gas Company and San Diego Gas & Electric in Southern California; Oncor Electric Equipment Delivery Company in Texas; and Sempra Infrastructure, with offices in California and Texas. As of 2024, Sempra reported more than $96.2 billion in total assets and over 20,000 employees. The company is led by chairman and chief executive officer Jeffrey Martin, who assumed that role in May 2018. Sempra is ranked #322 on the Fortune 500 list As of 2025, and #146 on the Forbes Global 2000 list as of 2025. In 2025, Sempra was named one of the World's Most Admired Companies by Fortune magazine. Sempra was also recognized by Newsweek as one of America's Most Responsible Companies.