Hydro One Limited

Headquarters: Toronto, ON, Canada

Founded: Toronto, Ontario, Canada 1999

Employees: 6,260

CEO: Mr. Mark Poweska P.Eng.

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Market Cap

C$22.21 Billion

CAD as of July 1, 2023

US$16.77 Billion

history Market Cap History

Hydro One Limited market capitalization over time

Evolution of Hydro One Limited market cap in the past 5 years

Market capitalizations are calculated from the opening stock price at the beginning of each month.

history Market Cap History of Hydro One Limited

Detailed Description

Hydro One Limited, through its subsidiaries, operates as an electricity transmission and distribution company in Ontario. It operates through three segments: Transmission Business, Distribution Business, and Other. The company owns and operates approximately 30,000 circuit kilometers of high-voltage transmission lines and 125,000 circuit kilometers of primary low-voltage distribution network. It serves approximately 1.5 million residential, small business, commercial, and industrial customers. The company also provides telecommunications support services for its transmission and distribution businesses; and information and communications technology services and solutions. Hydro One Limited was incorporated in 2015 and is headquartered in Toronto, Canada.


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Product & Services

Transmission and Distribution

Key People

Mark Poweska CEO Tim Hodgson Chair of the Board


Revenue: CA$ 5.990 Billion (2017)

Net income: CA$ 682 Million (2017)

Total assets: CA$ 25.701 Billion (2017)

Total equity: CA$ 10.231 Billion (2017)



South Tower

8th Floor 483 Bay Street

Toronto, ON M5G 2P5


Phone: 416-345-5000