Hydro One - Crews restore power to more than 479,500 customers as restoration continues in communities across Ontario, more than 150,000 remain without power

TORONTO - Hydro One crews have restored power to more than 479,500 customers affected by destructive spring thunderstorms that caused widespread severe damage across Ontario's electricity system.

Damage includes more than 1,400 broken poles, 300 broken crossarms, nearly 200 damaged transformers, and countless downed trees and branches. In the Ottawa area, Hydro One crews are re-building four transmission towers that were toppled by the storm.

Hydro One crews along with approximately 500 employees from other utilities, including out-of-province and international partners, and contractors have mobilized in the hardest hit areas of central and eastern Ontario to assist with restoration efforts. Due to the severity of damage, restoration efforts are expected to continue for several days before power is restored to all customers.

'Our hearts remain with our customers who have been devastated by this storm. I've heard from crews on the ground that this is the most destructive storm in recent memory, and you have our commitment that we will not stop until every last customer is restored,' said Jason Fitzsimmons, Chief Customer Care and Corporate Affairs Officer, Hydro One. 'We thank you for your continued patience and support as our crews work alongside our utility partners and contractors, who have come from near and far to assist with restoration efforts.'

Customers can report their outage by texting 92887 (WATTS), online, through the company's outage map and app, or by calling 1-800-434-1235. An estimated time of restoration will be assigned to each outage as damage is assessed. Customers can view the current status of their outage here.

It is critical to stay at least 10 metres back from a fallen power line, even if it does not appear to be live. Report it to the police and call Hydro One at 1-800-434-1235 or report it online or through the company's free outage app.

Hydro One Limited (TSX: H)

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 $30.4 billion in assets as at December 31, 2021, and annual revenues in 2021 of approximately $7.2 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 2021, Hydro One invested approximately $2.1 billion in its transmission and distribution networks, and supported the economy through buying approximately $1.7 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 Company by the Canadian Electricity Association.

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.

Contact:

Tel: 416-345-6868