Who owns Enbridge Mainline System?
Enbridge Mainline System is owned by Enbridge (Canada, TSX: ENB).[1]
Evidence: Enbridge Inc. Annual Report on Form 10-K filed 2026-02-13, SEC EDGAR, 13 February 2026. Verified from filings; last checked .
Key facts
- Current owner
- Enbridge Inc. verified
- Owner HQ
- 🇨🇦 Canada
- Origin
- 🇨🇦 Canada
- Category
- Energy › Oil & gas › Pipelines & midstream
- Parent ticker
- TSX: ENB NYSE: ENB
- Last verified
- · 1 sources
About Enbridge Mainline System
The Mainline System is the common-carrier crude pipeline network made up of the Canadian Mainline and the Lakehead System, according to Enbridge's 2025 10-K. The Canadian Mainline has six adjacent pipelines with a combined operating capacity of about 3.2 million barrels per day connecting to the Lakehead System at the Canada/US border.
Ownership timeline of Enbridge Mainline System
Where Enbridge Mainline System sits in Enbridge
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Enbridge ownership tree →
See the full Enbridge brand portfolio (3) →
Other brands owned by Enbridge
Enbridge controls 3 brands on Brandtree, 3 of them in energy.
Also in energy
Other brands in pipelines & midstream, and who owns them
The 35 brands in pipelines & midstream on Brandtree belong to 21 owners. The largest is Energy Transfer, with 4; Enbridge has 2.
| Brand | Owner | Owner based in |
|---|---|---|
| Dakota Access Pipeline | Energy Transfer | 🇺🇸 United States |
| Dixie Pipeline | Enterprise Products | 🇺🇸 United States |
| Basin Pipeline | Plains All American | 🇺🇸 United States |
| MountainWest | Williams | 🇺🇸 United States |
| Corpus Christi LNG | Cheniere | 🇺🇸 United States |
| Cenit | Ecopetrol | 🇨🇴 Colombia |
| Columbia Pipeline Group | TC Energy | 🇨🇦 Canada |
| Aris Water Solutions | Western Midstream | 🇺🇸 United States |
About the owner: Enbridge
Enbridge is a publicly listed company headquartered in Canada. Brandtree records 3 brands under its control, and it is listed as TSX: ENB and NYSE: ENB.
Enbridge's 2025 Form 10-K says it was incorporated on 13 April 1970 and continued under the Canada Business Corporations Act in 1987, and that its common shares trade on the TSX and NYSE under ENB. It describes itself as a leading North American energy infrastructure company with Liquids Pipelines, Gas Transmission, Gas Distribution and Storage, and Renewable Power Generation businesses.
🇨🇦 Enbridge Mainline System and other Canadian brands
Brandtree records a controlling owner for 174 brands that began in Canada. 41 of them (24%) are now controlled by a company headquartered in another country; Enbridge Mainline System is not one of them.
- Algoma Tubes — Tenaris 🇱🇺
- Burnaby Refinery — Sunoco 🇺🇸
- CNOOC Petroleum North America — CNOOC 🇨🇳
- Cameco — Cameco 🇨🇦
- Canadian Natural — Canadian Natural 🇨🇦
- Canwest Propane — Superior Plus 🇨🇦
Frequently asked questions
Who is the parent company of Enbridge Mainline System?
The parent company of Enbridge Mainline System is Enbridge, a publicly listed company headquartered in Canada.
Is Enbridge Mainline System Canadian?
Yes. Enbridge Mainline System originated in Canada and its owner, Enbridge, is also headquartered in Canada.
Is Enbridge Mainline System still owned by Enbridge?
Yes. As of 5 October 2026, Enbridge Mainline System is still owned by Enbridge. 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] Enbridge Inc. Annual Report on Form 10-K filed 2026-02-13 — SEC EDGAR, SEC Form 10-K, published 13 February 2026; retrieved 5 October 2026.
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