San Diego Gas & Electric (SDG&E) is a regulated public utility that provides natural gas and electricity to San Diego County and southern Orange County in California. It is owned by Sempra, a Fortune 500 energy services holding company based in San Diego.
SDG&E provides energy service to 3.7 million consumers through 1.49 million electric meters and more than 905,000 natural gas meters. The utility's area spans 4,100 square miles (10,600 square kilometers). SDG&E has about 4,000 employees.
Generation portfolio In 2004, the California Public Utilities Commission approved SDG&E's long-term energy resource plan, which relies on a balanced mix of resources to meet the growing energy needs of San Diego. That mix includes increased emphasis on energy efficiency, more renewable energy resources, and additional baseload generation plants and transmission capacity. In 2014 SDG&E had a renewables mix of 36.4%, more than the 33% requirement by 2020.Biennial RPS Program Update Section 913.6 Report | January 2016 | Page 5. California Public Utilities Commission By 2016, 43.2% of SDG&E's electrical power sources were renewable.
SDG&E's system includes 134 distribution substations, 10,558 miles of underground power lines, and 6,527 miles of overhead power lines.
Generation and Storage Facilities
Palomar Energy Center (PEC) Desert Star Energy Center (DSEC) Miramar Energy Facility (MEF) Cuyamaca Peak Energy Plant (CPEP) Escondido Battery Energy Storage System (Escondido BESS) El Cajon Battery Energy Storage System (El Cajon BESS) Ramona Solar Energy Project (RSEP)
Interconnections SDG&E has two 230 kilovolt (kV) lines (the Miguel–Tijuana Line and the La Rosita–Imperial Valley Line) that connect the California transmission system with the Mexican Comisión Federal de Electricidad transmission system in Baja California. The Path 45 transmission corridor, spanning over the Mexico–United States border, has a capacity of 408 megawatts (MW). SDG&E has a 500 kV line connecting to Arizona Public Service, and a 230 kV line connecting to the Imperial Irrigation District (IID). Both of these are part of the massive Path 46 transmission system ensuring Southern California has adequate energy supply.
The Sunrise Powerlink includes approximately 117 miles (188 km) of 500 kV and 230 kV overhead and underground transmission lines with several large 230/500 kV substations. The transmission line linking San Diego to Imperial Valley, one of the most renewable-rich regions in California, was put into service on June 18, 2012. Solar energy from Southern California's Imperial Valley is delivered to San Diego through the Sunrise Powerlink.
History
Founding In 1881, power first came to the city of San Diego in the form of gas-lit street lamps. The San Diego Gas Company, a newly formed partnership of eight local businessmen, supplied the gas for the lamps, which were located on Fifth Street in downtown.
The city's first incandescent lighting was provided by a small plant at India and Kalmia Streets. It was installed in 1888 to power the city's first electric streetcar, built that year by the Electric Rapid Transit Street Car Company.
Henry H. Jones, a civil, construction, and electrical engineer, came to San Diego in 1910 as vice president and manager of the San Diego Consolidated Gas & Electric Company and became president shortly thereafter.McGrew, Clarence Alan; City of San Diego and San Diego County: The Birthplace of California, Volume 2, pg. 421 (1922).
Henry Harrison Jones was born in Reading, Pennsylvania, March 31, 1874, son of Richard Hall and Ellen (Hughes) Jones. After graduating from high school in 1890 he was a bookkeeper at the Second National Bank, then entered Lehigh University to pursue a technical course. He graduated as a Civil Engineer in 1897, then for a year was a draftsman and assistant engineer for the Chicago, Peoria, and St. Louis Railroad Company in Springfield, Illinois, then a member of the general engineering staff of the Pennsylvania Railroad at Philadelphia until 1899, when he again went west. Until 1903 he was in Chicago as an assistant engineer of the Chicago & Northwestern Railroad. For seventeen years his work was chiefly confined to traction and electric power engineering. He was general superintendent for the Springfield Railway & Light Company in Springfield, Illinois, until 1909, and before coming to San Diego was the manager of the Northern Idaho & Montana Power Company. In 1905, the San Diego Gas and Electric Light Company was struggling to meet the demand for its services. The company was sold that year to a Chicago firm H.M. Byllesby & Company and renamed the San Diego Consolidated Gas and Electric Company. Included in the deal were the company's main assets: an electric generating plant with four steam-driven turbines, a gas treatment plant, thirty miles of electric lines, thirty-four miles of gas mains, and the accounts of exactly 3426 customers. Henry H. Jones, a civil, construction, and electrical engineer, came to San Diego in 1910 as vice president and manager of the San Diego Consolidated Gas & Electric Company and became president shortly thereafter.
By 1920 the company furnished gas and electric service to San Diego city and forty adjacent towns and districts as far north as San Juan Capistrano in Orange County, and south to the Mexican border. When Jones took the management of the company in 1910 it had less than six thousand electric customers and less than nine thousand gas customers, while the number of customers in each branch in 1920 numbered nearly twenty-seven thousand. The quantity measure of service increased in proportion, necessitating the investment of millions of dollars in new equipment and distribution systems. In 1920 the company had five hundred and thirty miles of gas main and over seven hundred miles of electric poll lines.
Mr. Jones served as a director and member of the executive committee during the 1915 Panama–California Exposition, whose group was responsible for designing, creating, and building the first, original structures and buildings in Balboa Park.
Later history In 1940, to comply with federal law, the company ended corporate ownership, made its stock available to the public, and renamed itself San Diego Gas & Electric Company.
SDG&E began construction on the South Bay power plant in 1958, and the first of four oil fuel-burning units came online in 1960. The plant provided much-needed electricity to help the region expand and grow its economy.
SDG&E began research into nuclear power in the late 1950s. In 1961, it agreed to participate in a 350,000-kilowatt nuclear power plant with Southern California Edison known as the San Onofre Nuclear Generating Station (SONGS). SDG&E owned 20% of the plant, located in San Onofre, California; SoCal Edison owned 80%. The plant became operational in 1967.
In the 1970s, SDG&E acquired Mountain Empire Rural Electric Co-op, which served eastern San Diego County.
In 1976, after purchasing the necessary land the previous year, San Diego Gas & Electric Company filed an application with the U.S. Nuclear Regulatory Commission to build two 974 MWe Westinghouse pressurized water reactors under the name Sundesert Nuclear Power Plant. The plant was to be located about 15 miles southwest of Blythe, California, near the Arizona border. The plant received a lot of pushback and opposition from California legislators, and the general public had mixed reactions to it. In June 1976, Californians voted to reject Proposition 15, the Nuclear Power Plant Initiative. The ballot measure would have banned the construction of nuclear power plants and limited the use of existing nuclear power plants to 60% (decreasing by 10% annually after five years) and would have reduced the output of California's three existing nuclear reactors and banned new reactors unless the state legislature determined that nuclear safety systems had proven effective and that radioactive waste could be stored safely. But coverage of the failed state measure and opposition to a separate nuclear power plant in Kern County, California, grew the anti-nuclear discourse.Wellock, Thomas R. “Stick It in L.A.! Community Control and Nuclear Power in California’s Central Valley.” The Journal of American History, vol. 84, no. 3, 1997, pp. 942–78. JSTOR, https://doi.org/10.2307/2953089. Accessed 7 Sept. 2024. SDG&E, which would have built the Sundesert plant, failed to convince the State Assembly Resources Committee that adequate disposal technology was available. Governor Edmund G. Brown Jr. was largely responsible for Sundesert's defeat. The California State Energy Commission, appointed by the governor, voted 4–1 against the plant. After the state Senate passed a bill exempting the plant from having to dispose of its waste, Brown's allies in the Assembly leadership sent the measure to a committee, where the bill faced an uphill battle. The bill was defeated by a vote of 4 to 7, with three Republicans and one Democrat in favor of the measure and seven Democrats opposed. Sundesert had consumed an enormous amount of the company's effort for six years and a total of more than $106 million.
The South Bay Power Plant was built in 1958. It changed ownership at least four times over the past five decades, including Duke Energy, The Unified Port of San Diego, and LS Power. During its operation, it began burning natural gas instead of fuel oil. At one point, it would generate up to 700 megawatts - enough to power 500,000 homes in Southern California. In 1988, the Port began fighting to decommission and dismantle the plant so that the 13-acre site on which it was built could be put to better use. Eventually, the plant was decommissioned in 2010, but the California Independent System Operator (CAL ISO) had said that two units at the South Bay plant were needed in 2011 to ensure the reliability of the electricity supply, so demolition did not occur until 2012.
From 2022 through 2024, San Diego Gas & Electric hosted an annual EV Fleet Day at its Century Park Campus to engage fleet owners and operators in the service area.
Controversies
United States v. San Diego Gas & Electric The Encanto Gas Holder was a natural gas holding station composed of over of underground pipe on about of land in Lemon Grove, adjacent to the city of San Diego. First brought online in the mid-1950s, the Encanto Gas Holder was decommissioned in 2000–2001 by San Diego Gas and Electric, Sempra as the agent of SDG&E, and the IT Corporation as the main contractor for the decommissioning. TriState was brought on board to abate strips of asbestos-containing pipe coating for another contractor to cut the holder bottle into sections. TriState was later tasked with stripping the coating at the gas holder site despite employee and nearby residents' concerns over friable asbestos generated as a byproduct of the gross stripping processes employed by SDG&E contractors.US Attorney's press release