Sempra

In 1867, a newly franchised Los Angeles Gas Company began supplying gas to light the city’s streets. In 1890 the holding company Pacific Lighting bought it together with several smaller gas companies, which ultimately became the Southern California Gas Company (SoCalGas).⁠[1]

On April 18, 1881, five San Diegans met in the parlor of the Consolidated Bank to incorporate the San Diego Gas Company, the forerunner of San Diego Gas & Electric (SDG&E). SDG&E’s service area spans 4,100 square miles of San Diego and southern Orange counties, serving 3.7 million people through 1.5 million electric meters and 900,000 natural gas meters.⁠[2]

On March 11, 1997, shareholders of Pacific Enterprises, parent of SoCalGas, and Enova Corporation, parent of SDG&E, approved combining the two companies.⁠[3]

On June 26, 1998, the combination took effect and Sempra Energy was formed as the holding company for both, with each Pacific Enterprises common share exchanged for 1.5038 Sempra Energy shares.⁠[3]

Each Enova common share was converted into one Sempra Energy share, and the new stock traded on the New York and Pacific Stock Exchanges under the symbol SRE.⁠[4]

On December 6, 2005, the board elected President and Chief Operating Officer Donald E. Felsinger to succeed Stephen Baum, who retired as CEO on December 31, 2005 and as chairman on January 31, 2006. Felsinger became CEO on January 1, 2006 and chairman on February 1, 2006, and Neal Schmale succeeded him as chief operating officer and president.⁠[5]

On January 4, 2006, Sempra Energy agreed to pay $377 million in cash to settle class-action litigation arising from the Western U.S. energy crisis of 2000–01, and Sempra Generation agreed to price reductions totaling $300 million under its contract with the California Department of Water Resources. The company and its utilities denied any wrongdoing.⁠[6]

In 2007, strong Santa Ana winds blew down SDG&E power lines and sparked the Witch Creek, Guejito and Rice fires, which killed two people and destroyed more than 1,100 homes. In November 2017 the California Public Utilities Commission denied SDG&E’s request to charge customers $379 million for the costs; SDG&E said it “strongly disagrees” with the decision.⁠[7]

In 2008 Sempra completed its first renewable project, a 10-megawatt solar facility in Nevada, and the Energía Costa Azul LNG receipt terminal in Mexico began operations. The Cameron LNG receipt terminal in Louisiana began commercial operations in 2009, and the Sunrise Powerlink line entered service in 2012.⁠[8]

On April 1, 2008, Sempra Energy and the Royal Bank of Scotland completed the formation of the commodities-marketing joint venture RBS Sempra Commodities. Sempra Energy’s initial investment was $1.6 billion, and RBS’s initial equity investment was $1.7 billion.⁠[9]

On June 27, 2011, the board elected Debra L. Reed as chief executive officer, succeeding Felsinger, who continued as executive chairman until his planned retirement at age 65 in late 2012.⁠[10]

A well at SoCalGas’s Aliso Canyon storage facility leaked from October 23, 2015 until it was capped in mid-February 2016. In September 2016 SoCalGas pleaded no contest to a misdemeanor count of failing to report the leak immediately. In September 2021 SoCalGas and Sempra agreed to pay up to $1.8 billion to settle the claims of more than 35,000 victims.⁠[11]

On March 9, 2018, Sempra Energy completed its $9.45 billion acquisition of Energy Future Holdings Corp., gaining an approximately 80 percent indirect ownership interest in the Texas transmission and distribution utility Oncor Electric Delivery Company. CEO Debra L. Reed called it “the biggest in our 20-year history.”⁠[12]

On March 12, 2018, the company announced that Reed would step down as CEO and president on May 1 and retire on December 1, and that Chief Financial Officer Jeffrey W. Martin would succeed her as CEO. Martin had been CEO of SDG&E from 2014 through 2016 before becoming Sempra Energy’s CFO in January 2017.⁠[13]

On May 31, 2019, Sempra Energy announced that Cameron LNG had shipped the first commissioning cargo from its liquefaction-export facility in Hackberry, Louisiana. Cameron LNG is jointly owned by affiliates of Sempra LNG, Total, Mitsui & Co. and Japan LNG Investment, and Sempra Energy indirectly owns 50.2 percent; Phase 1 is designed to export about 12 million tonnes of LNG per year.⁠[14]

On April 24, 2020, Sempra Energy completed the sale of its Peruvian businesses, including its 83.6 percent stake in Luz del Sur, to China Yangtze Power International (Hongkong) for about $3.59 billion in total cash proceeds.⁠[15]

On June 24, 2020, Sempra Energy completed the sale of its Chilean businesses, including its 100 percent stake in Chilquinta Energía, to State Grid International Development for about $2.23 billion in total cash proceeds, completing the divestiture of all its South American assets.⁠[16]

On April 5, 2021, Sempra Energy announced that it would combine Sempra LNG and the Mexican energy company IEnova into Sempra Infrastructure Partners and agreed to sell a non-controlling 20 percent interest to KKRKKRKKR (Kohlberg Kravis Roberts) is an investment firm engaged in alternative asset management, capital markets services, and insurance. Jerome Kohlberg, Henry Kravis, and George Roberts co-founded the firm in 1976. Its managed funds invest in private equity, credit, and real assets, and its subsidiary Global Atlantic operates retirement, life insurance, and reinsurance businesses. KKR listed on the New York Stock Exchange in 2010 under the ticker KKR.Open the full entry for $3.37 billion in cash, valuing the platform at about $25.2 billion.⁠[17]

That year the company modernized its brand and simplified its name to Sempra.⁠[8]

On June 1, 2022, Sempra completed the sale of a 10 percent non-controlling interest in Sempra Infrastructure Partners to a subsidiary of the Abu Dhabi Investment Authority (ADIA) for $1.73 billion in cash. KKR and ADIA then owned 20 percent and 10 percent, and Sempra kept a 70 percent controlling stake.⁠[18]

On March 20, 2023, Sempra’s 70 percent-owned Sempra Infrastructure Partners reached a final investment decision on Phase 1 of Port Arthur LNG in Texas, with a nameplate capacity of about 13 Mtpa and estimated capital expenditures of $13 billion; a ConocoPhillipsConocoPhillipsConocoPhillips is an American independent oil and gas exploration and production company, formed by the 2002 merger of Conoco and Phillips Petroleum and headquartered in Houston, Texas.Open the full entry affiliate acquired a 30 percent interest. Trains 1 and 2 were expected to start in 2027 and 2028.⁠[19]

On May 12, 2023, shareholders at the annual meeting approved an amendment to the articles of incorporation changing the company’s legal name from Sempra Energy to Sempra.⁠[20]

In August 2023 the company announced a two-for-one stock split.⁠[8]

On September 23, 2025, Sempra agreed to sell a 45 percent interest in Sempra Infrastructure Partners to affiliates of KKR for $10 billion, keeping 25 percent. The same day the platform reached a final investment decision on Port Arthur LNG Phase 2. Martin described a “transition to a leading U.S. utility growth business.”⁠[21]

Sempra has three segments: Sempra California, Sempra Texas Utilities and Sempra Infrastructure. Oncor had about 5,600 employees at December 31, 2025.⁠[22]

Sempra’s total revenues for 2025 were about $13.70 billion, up from about $13.19 billion in 2024. GAAP earnings were $1.80 billion, or $2.75 per diluted share, compared with $2.82 billion in 2024. The company raised its 2026–2030 capital plan to about $65 billion.⁠[23]

On July 9, 2026, Sempra announced that CFO Karen Sedgwick would become CEO of SoCalGas, that Sempra Infrastructure CEO Justin Bird would become Sempra’s CFO, and that Bob Patel would become CEO of Sempra Infrastructure, all on or around the closing of the 45 percent stake sale. Jeffrey W. Martin remains chairman and CEO.⁠[24]

Sempra’s GAAP earnings for the second quarter of 2026 were $796 million, up from $461 million a year earlier. As of August 6, 2026, the 45 percent stake sale was expected to close in the third quarter of 2026, and the Ecogas sale, cleared by Mexico’s antitrust authority, in August 2026.⁠[25]