Who owns Hydro One Networks?
Hydro One Networks is owned by Hydro One (Canada).[1]
Evidence: Hydro One Inc. Annual Report on Form 40-F filed 2026-02-13, SEC EDGAR, 13 February 2026. Verified from filings; last checked .
Key facts
- Current owner
- Hydro One Inc. verified
- Owner HQ
- 🇨🇦 Canada, Toronto
- Origin
- 🇨🇦 Canada
- Category
- Energy › Power & utilities › Grids & transmission
- Last verified
- · 1 sources
About Hydro One Networks
Hydro One Networks Inc. is the principal operating subsidiary of Hydro One Inc., carrying on its rate-regulated transmission and distribution businesses. The 2025 AIF says Hydro One owns and operates substantially all of Ontario's transmission network and is the province's largest distributor by customers.
Ownership timeline of Hydro One Networks
Where Hydro One Networks sits in Hydro One
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Hydro One ownership tree →
See the full Hydro One brand portfolio (2) →
Other brands owned by Hydro One
Hydro One controls 2 brands on Brandtree, 2 of them in energy.
Also in energy
Other brands in grids & transmission, and who owns them
The 11 brands in grids & transmission on Brandtree belong to 9 owners. The largest is ESB, with 2.
| Brand | Owner | Owner based in |
|---|---|---|
| ESB Networks | ESB | 🇮🇪 Ireland |
| SSEN Distribution | SSE | 🇬🇧 United Kingdom |
| ISA | Ecopetrol | 🇨🇴 Colombia |
| ITC | Fortis | 🇨🇦 Canada |
| J-POWER Transmission Network | J-POWER | 🇯🇵 Japan |
| Kansai Transmission and Distribution | Kansai Electric Power | 🇯🇵 Japan |
| Oncor | Sempra | 🇺🇸 United States |
| American Transmission Company | WEC Energy Group | 🇺🇸 United States |
About the owner: Hydro One
Hydro One is a privately held company headquartered in Toronto, Canada. Brandtree records 2 brands under its control.
Hydro One Inc. is the Ontario electricity transmission and distribution utility, which its 2025 annual information form describes as a wholly owned subsidiary of Hydro One Limited. The AIF says the Province of Ontario is Hydro One Limited's principal shareholder and that Hydro One Limited owns all the issued shares of Hydro One Inc.; it gives about $40 billion of assets and about 1.5 million customers.
🇨🇦 Hydro One Networks 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; Hydro One Networks 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 Hydro One Networks?
The parent company of Hydro One Networks is Hydro One, a privately held company headquartered in Canada.
Is Hydro One Networks Canadian?
Yes. Hydro One Networks originated in Canada and its owner, Hydro One, is also headquartered in Canada.
Is Hydro One Networks still owned by Hydro One?
Yes. As of 5 October 2026, Hydro One Networks is still owned by Hydro One. 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] Hydro One Inc. Annual Report on Form 40-F filed 2026-02-13 — SEC EDGAR, SEC filing, published 13 February 2026; retrieved 5 October 2026.
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