Market Cap

Hydro One Limited Market Capitalization:

C$29.48 Billion

CAD as of July 1, 2025

US$21.61 Billion

business Hydro One Limited Company Profile

Hydro One Limited Main Stock Listing

TSX: H

Market Capitalization History of Hydro One Limited

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

Top Competitors by Market Capitalization

Industry: Utilities—Regulated Electric
Company Market Cap (USD)
NextEra Energy $150.32 B
The Southern Company $100.28 B
Duke Energy Corporation $90.99 B
American Electric Power Company, Inc. $55.16 B
Xcel Energy Inc. $38.97 B
Sector: Utilities
Company Market Cap (USD)
NextEra Energy $150.32 B
Iberdrola, SA $120.04 B
China Yangtze Power Co. Ltd $103.31 B
The Southern Company $100.28 B
Enel SpA $98.84 B

Yearly evolution of Hydro One Limited market cap

Date Market Cap YoY Change
Jan. 1, 2025 C$27.21 B 14.89%
Jan. 1, 2024 C$23.69 B 8.42%
Jan. 1, 2023 C$21.85 B 11.83%
Jan. 1, 2022 C$19.54 B 10.83%
Jan. 1, 2021 C$17.63 B

Market capitalization is calculated from the opening stock price at the beginning of each year.

Hydro One Limited Categories

Canada languages Utilities languages Utilities—Regulated Electric
Canada Utilities Canada Utilities—Regulated Electric

Stocks & Indices

Hydro One Limited has the following listings and related stock indices.


Stock: TSX: H

Stock: FSX: 8H1

Stock: OTC: HRNNF

What is a company's market capitalization?

The market capitalization of a company, more simply referred to as "market cap", is the total market value of a publicly traded company's outstanding shares. It is often considered as a key indicator of what a company is worth.