Hydro One Second Quarter 2023 Results Release August 9, 2023 Before Markets Open

Investment Community Teleconference Set for August 9, 2023 at 8 a.m. ET

TORONTO, July 10, 2023 /PRNewswire/ - Hydro One Limited (TSX: H), the largest electric transmission and distribution utility in Ontario, plans to release its second quarter financial results the morning of August 9, 2023 before North American financial markets open. A summary of the results will be distributed by newswire and the complete MD&A and financial statements will be posted at www.hydroone.com/investors and www.sedar.com.

Hydro One's management will host a teleconference with the investment community at 8 a.m. ET that same morning to discuss the results and outlook. Those wishing to listen to the teleconference should access the live webcast on the Investor Relations Events and Presentations section of Hydro One's website at www.hydroone.com/investors. A rebroadcast of the teleconference will be available following the call at the same link.

Those members of the North American financial community wanting to ask questions during the call should go to this link (registration link), and you will be provided with personalized dial-in details. To avoid delays, we encourage participants to dial into the conference call fifteen minutes ahead of the scheduled start time. Other interested parties and media are welcome to participate on a listen-only basis.

Hydro One Limited, through its wholly-owned subsidiaries, is Ontario's largest electricity transmission and distribution provider with approximately 1.5 million valued customers, approximately $31.5 billion in assets as at December 31, 2022, and annual revenues in 2022 of approximately $7.8 billion.

Our team of approximately 9,300 skilled and dedicated employees proudly build and maintain a safe and reliable electricity system which is essential to supporting strong and successful communities. In 2022, Hydro One invested approximately $2.1 billion in its transmission and distribution networks, and supported the economy through buying approximately $1.9 billion of goods and services.

We are committed to the communities where we live and work through community investment, sustainability and diversity initiatives. We are designated as a Sustainable Electricity Leader™ by Electricity Canada.

Hydro One Limited's common shares are listed on the TSX and certain of Hydro One Inc.'s medium term notes are listed on the NYSE. Additional information can be accessed at www.hydroone.com, www.sedar.com or www.sec.gov.

For more information about everything Hydro One, please visit www.HydroOne.com where you can find additional information including links to securities filings, historical financial reports, and information about the Company's governance practices, corporate social responsibility, customer solutions, and further information about its business.

SOURCE Hydro One Limited