Customer Communications Centre:Billing and Service Inquiries (7:30 am - 8:00 pm EST, Monday to Friday)Fax Report a Power Outage, Fallen Tree Hazard or Emergency (24 Hours)Mailing Address
CustomerCommunications@HydroOne.com1-888-664-9376(905) 944-32511 (800) 434-1235Hydro One Networks Inc.P.O. Box 5700, Markham, Ontario L3R 1C8
Environment, Health and Safety:Toll-Free Electric and Magnetic Fields (EMF) Inquiries
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Regulatory: (for questions on applications filed by Hydro One Networks with the Ontario Energy Board)Fax
Transmission Corridor Property Maintenance:If you have a concern with conditions on Hydro One transmission corridors such as high grass or dumping, please call 1-888-664-9376. Hydro One does not own and is not responsible for maintaining all the property on these corridors. Before calling Hydro One, please contact your local municipality to confirm ownership. For the transmission corridor it maintains, Hydro One has a policy of cutting grass six times a year.
1-888-664-9376E-mail Us a Corridor Maintenance Request1-888-231-6657 (Hydro One Real Estate Services)
Corporate Security Services:If you have any information regarding people stealing electricity, please call our new toll-free number. The Hydro One Theft of Power Tips Line is not traceable back to the person who calls. Please e-mail us if you notice any other suspicious activity relating to Hydro One property.
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Corporate Switchboard:Toll-Free LineIn Toronto
Corporate Mailing Address:
483 Bay StreetNorth Tower, 15th Floor ReceptionToronto, Ontario M5G 2P5
Industrial Customers and LDCs:
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