Who owns San Diego Gas & Electric?
San Diego Gas & Electric is owned by Sempra (the United States, NYSE: SRE).[1]
Evidence: Sempra Annual Report on Form 10-K filed 2026-02-26, SEC EDGAR, 26 February 2026. Verified from filings; last checked .
Key facts
- Current owner
- Sempra verified
- Owner HQ
- 🇺🇸 United States
- Origin
- 🇺🇸 United States
- Category
- Energy › Power & utilities › Electric utilities
- Parent ticker
- NYSE: SRE
- Last verified
- · 1 sources
About San Diego Gas & Electric
SDG&E is a regulated public utility providing electric service in the San Diego region, one of the two utilities in Sempra California per Sempra's 2025 10-K. It also owns a 20% interest in the SONGS nuclear plant, which ceased operations in 2013.
What Sempra's annual report says about San Diego Gas & Electric
Sentences about San Diego Gas & Electric from Sempra's latest annual filing[1], copied word for word.
X San Diego Gas & Electric Company 24.2 Power of attorney of San Diego Gas & Electric Company signatories (incorporated by reference to the signature page hereto).
How often Sempra names San Diego Gas & Electric in its annual report
A plain count of the times the name appears in the text of each annual report, not counting the start of a sentence. A brand that an owner writes about more is usually one it treats as central. The brand is named less often than it was three years earlier.
Ownership timeline of San Diego Gas & Electric
Where San Diego Gas & Electric sits in Sempra
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Sempra ownership tree →
See the full Sempra brand portfolio (4) →
Other brands owned by Sempra
Sempra controls 4 brands on Brandtree, 4 of them in energy.
Also in energy
Other brands in electric utilities, and who owns them
The 47 brands in electric utilities on Brandtree belong to 30 owners. The largest is Exelon, with 6.
| Brand | Owner | Owner based in |
|---|---|---|
| Atlantic City Electric | Exelon | 🇺🇸 United States |
| Caribbean Utilities Company | Fortis | 🇨🇦 Canada |
| Alabama Power | Southern Company | 🇺🇸 United States |
| Empire District Electric | Algonquin Power | 🇨🇦 Canada |
| Chubu Electric Power | Chubu Electric Power | 🇯🇵 Japan |
| Dominion Energy South Carolina | Dominion Energy | 🇺🇸 United States |
| Kentucky Utilities | PPL | 🇺🇸 United States |
| Wisconsin Electric Power Company | WEC Energy Group | 🇺🇸 United States |
About the owner: Sempra
Sempra is a publicly listed company headquartered in United States. Brandtree records 4 brands under its control, and it is listed as NYSE: SRE.
Sempra's 2025 Form 10-K organises its business into Sempra California, Sempra Texas Utilities and Sempra Infrastructure. It says Oncor Holdings is a wholly owned entity of Sempra that owns an 80.25% interest in Oncor, and that Sempra holds 70% of SI Partners (the Sempra Infrastructure partnership), with KKR Pinnacle at 20% and ADIA at 10%. The filing describes a planned sale of part of its SI Partners interest.
🇺🇸 San Diego Gas & Electric and other American brands
Brandtree records a controlling owner for 2,399 brands that began in the United States. 461 of them (19%) are now controlled by a company headquartered in another country; San Diego Gas & Electric is not one of them.
- AES Ohio — AES 🇺🇸
- Agway Energy Services — Suburban Propane 🇺🇸
- Alabama Power — Southern Company 🇺🇸
- AmeriGas — UGI 🇺🇸
- American Transmission Company — WEC Energy Group 🇺🇸
- Arch Resources — Core Natural Resources 🇺🇸
Frequently asked questions
Who is the parent company of San Diego Gas & Electric?
The parent company of San Diego Gas & Electric is Sempra, a publicly listed company headquartered in the United States.
Is San Diego Gas & Electric American?
Yes. San Diego Gas & Electric originated in the United States and its owner, Sempra, is also headquartered in the United States.
Is San Diego Gas & Electric still owned by Sempra?
Yes. As of 11 October 2026, San Diego Gas & Electric is still owned by Sempra. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] Sempra Annual Report on Form 10-K filed 2026-02-26 — SEC EDGAR, SEC Form 10-K, published 26 February 2026; retrieved 5 October 2026.
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