Sempra Energy serves one of the largest utility customer bases in the United States. It distributes natural gas and electricity in Southern California and owns 80% of Oncor, a transmission and distribution business in Texas. SoCalGas and San Diego Gas & Electric distribute gas to more than 20 million customers, while Oncor serves more than 10 million Texas customers. Sempra Infrastructure partners, of which Sempra holds a controlling ownership, owns and operates liquefied natural gas facilities in North America and infrastructure in Mexico.