08 Oct 2021

“The Society of United Professionals is proud to work with employers to negotiate collective agreements that are fair to all,” said Scott Travers, President of the Society. “I am very pleased that our members voted in favour of this agreement.” About the Society of United Professionals: The Society of United Professionals was founded more than 70 years ago by engineers who wanted better working conditions. Today, the company represents 8,000 professionals across Ontario in the public, private and non-profit sectors. Members of the society include engineers, lawyers and supervisors among many other professions. Learn more about www.thesociety.ca and follow us on Facebook, Twitter and YouTube. The collective agreement between Hydro One Inc. and the company has approximately 1500 employees in critical engineering, oversight and management functions. “This agreement recognizes the significant contributions our employees make to providing exceptional customer service, reducing costs, improving the reliability of Ontario`s electricity system and increasing shareholder value,” said Paul Dobson, Executive Chairman of Hydro One. “Hydro One is committed to building relationships with union leaders and I want to thank our respective bargaining teams for the work and collaboration they have done over the past few months.” TORONTO, April 30, 2019 /PRNewswire/ — Hydro One Inc. and the Society of United Professionals (“the Company”) are pleased to announce that union members have voted in favour of a two-year collective agreement.

Forward-Looking Statements and Information This press release may contain “forward-looking information” within the meaning of applicable securities legislation. Words such as “expect,” “anticipate,” “intend,” “try,” “may,” “plan,” “become,” “may,” “believe,” “seek,” “appreciate,” and variations of such words and similar phrases are intended to identify such forward-looking information. These statements are not guarantees of future performance or actions and contain assumptions, risks and uncertainties that are difficult to predict. As a result, actual results and results may differ materially from what is expressed, implied or implied in such forward-looking information. some of the factors that could cause actual results to be materially impaired from those expressed, implied or anticipated in such forward-looking information, including some of the assumptions used in such statements, are presented by Hydro One to Canadian capital market authorities, available on SEDAR in www.sedar.com, discussion further. Hydro One does not intend and disc lays all obligation to update forward-looking information except as required by law. About Hydro One Inc.:Hydro One Inc. is a 100% subsidiary of Hydro One Limited, Ontario`s largest electricity transmission and distribution provider, with nearly 1.4 million estimated customers, approximately $25.7 billion in assets and annual revenue of nearly $6.2 billion in 2018. Our team of some 8,600 qualified and committed employees is proud to set up and maintain a safe and reliable electricity system, which is essential to support strong and prosperous communities. In 2018, Hydro One invested nearly $1.6 billion in its 30,000 kilometres of high-voltage circular transmission and 123,000 kilometres of primary distribution systems and injected approximately $1.3 billion into the economy by purchasing goods and services in Ontario. We are committed to the communities in which we live and work, through community investments, sustainability and diversity initiatives. We are one of six distribution companies in Canada that have received the Canadian Electricity Association`s Sustainable Electricity Corporation Award…