Sempra Brand Guidelines: A 1998 San Diego Merger, a Latin Name & a Texas Utility Stake

Two Southern California utility parents become one.

Sempra was born of a merger. A company history published by the Gale Group, reproduced by Reference for Business, records that Pacific Enterprises of Los Angeles and Enova Corporation of San Diego announced their plans in October 1996, waited for approval from the California Public Utilities Commission, the Federal Energy Regulatory Commission and the Securities and Exchange Commission, and completed the deal in June 1998. The combined company was named Sempra Energy and based in San Diego. The same history says the name “is derived from the Latin word for ‘always.’”

Each partner brought a utility. Enova was the parent of San Diego Gas & Electric, which English Wikipedia says now supplies gas and electricity to about 3.7 million consumers in San Diego County and southern Orange County. Pacific Enterprises was the parent of the Southern California Gas Company, known as SoCalGas, based in Los Angeles.

Both roots go back to the nineteenth century. English Wikipedia traces SoCalGas to the Los Angeles Gas Company, which installed 43 gas lamps along Main Street in 1867. The Gale history says Pacific Lighting Company was founded in San Francisco in 1886 by C.O.G. Miller and Walter B. Cline, who sold Siemens gas lamps before moving into the Southern California gas business; Pacific Lighting bought the Los Angeles Gas Company in 1890, English Wikipedia says, and its businesses became the Southern California Gas Company. Pacific Lighting reorganised as Pacific Enterprises in 1988, according to the Gale history.

At its formation, that history says, Sempra Energy had the largest regulated utility customer base in the United States, serving 21 million customers through its two California utilities.

California, Texas and a turn away from South America.

Sempra spent its first two decades spreading outward and then pulling back. In 1999 it bought two South American utilities, Chilquinta Energía in Chile and Luz del Sur in Peru, English Wikipedia says; in 2020 it sold both, the Peruvian business in April and the Chilean one in June, ending its time in South America. In the same period it sold its American renewable-energy and non-utility gas storage assets, which it said would let it focus on transmission and distribution in North America.

Texas became the second home. English Wikipedia records that regulators in Texas approved Sempra’s purchase of a majority stake in Oncor, the Dallas-based electricity transmission and distribution company, on 8 March 2018. Sempra’s third-quarter report for 2026 says it holds an 80.25% interest in Oncor, through Oncor Electric Delivery Holdings, and groups Oncor with Sharyland Utilities as its Texas utilities. The same report says those Texas businesses are separate from its California utilities and are not regulated by the California Public Utilities Commission.

The third strand is liquefied natural gas. English Wikipedia says Sempra Infrastructure was formed in 2021 by merging Sempra LNG with IEnova, its Mexican business; it developed the Cameron LNG joint venture at Hackberry in Louisiana and the Port Arthur LNG project in Texas, and has proposed export plants on Mexico’s Pacific coast, including Energía Costa Azul in Baja California. Sempra’s third-quarter report for 2026 says Sempra Infrastructure Partners completed the sale of its Mexican gas business, Ecogas México, in August 2026.

In a release of 8 September 2026 the company described its mission as building “America’s leading utility growth business,” and said its networks serve nearly 40 million consumers in California and Texas.

Utility identity in the United States.

Investor-owned electric utilities in the United States sell something nobody sees. Their customers meet them through a bill, a meter, a truck in the street and, when the lights go out, a crew working overnight. So the pictures these companies choose carry much of the weight that a product shot would carry for a maker of goods.

The most familiar picture is the lineworker. Annual reports and storm-season posts return again and again to crews in bucket trucks against heavy skies, to rows of trucks staged before a hurricane, and to poles and wires being rebuilt. Next to them sit transmission towers at sunset, substations, and long views of solar farms and wind turbines, often shown beside older gas, coal, hydro and nuclear plants.

The second register is the customer relationship. Utilities explain smart meters, outage maps and mobile apps for reporting a fault or paying a bill; they print bill inserts on saving energy and send branded customer-service vans to local events. Community-giving photography, from school grants to volunteer days, is a staple of their websites. Trade gatherings such as the Edison Electric Institute’s meetings and the DistribuTECH conference are where they speak to one another and to suppliers.

This guide sets out what can be checked about each company — when and where it began, which utilities it owns, how its name changed and what its public record shows — and marks clearly what rests only on the company’s own word. The palettes and type here are our own interpretation, not the companies’ marks.

From the Latin for “always.”

The name was shortened in 2021. At its investor day on 29 June 2021 the company said it had refreshed its brand to align it with its North American infrastructure strategy, removing “Energy” from its wordmark, according to the announcement as published by Hydrogen Central that day. The new name took effect on the New York Stock Exchange on 2 July 2021; the company said its legal name would remain Sempra Energy, doing business as Sempra, and its shares would keep the ticker SRE.

The group has had serious episodes. English Wikipedia records that Sempra was sued over claims that it manipulated gas supplies and electricity contracts during the 2001 California electricity crisis, and that it settled those claims in 2006 and 2010 without admitting wrongdoing. At SoCalGas’s Aliso Canyon storage field in the Santa Susana Mountains, a leak from a gas well was discovered on 23 October 2015; state officials announced on 18 February 2016 that the well had been permanently plugged, English Wikipedia says, and the field later resumed storage at reduced capacity from 2017.

A further change is pending. On 23 September 2025 Sempra announced that it had agreed to sell a 45% interest in Sempra Infrastructure Partners to affiliates of KKR, with Canada Pension Plan Investment Board; once complete, a KKR-led group would hold 65%, Sempra 25% and the Abu Dhabi Investment Authority its existing 10%. In its third-quarter report of 5 November 2026 Sempra said the sale was on track and expected to close within two weeks; it had not been completed at the time of writing.

For a design guide, Sempra shows a holding company whose one-word Latin name sits above the names of its operating utilities, SDG&E, SoCalGas and Oncor. Compare PG&E, another California gas and electric utility, and Edison International, another California utility holding company. For this guide we use a harbour navy and a coastal sand with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Sempra’s identity on hand — save it to a board in the Made Good inspiration library.