Contact Us

Here are the ways you can connect with us:

Email addresses are monitored during regular business hours only, 8:30 a.m. to 4:30 p.m., Monday to Friday.


Downed electrical wires, children playing near power lines and other emergency situations,
call: 911 and Horizon Utilities 24-hour hotline

Hamilton: 905-522-6611
St. Catharines: 905-684-8111

Call before you dig, Ontario One Call's
24-hour hotline: 1-800-400-2255 or
visit their website.

Power outages:

Horizon Utilities 24-hour hotline
Hamilton: 905-522-6611
St. Catharines: 905-684-8111

Learn more about electrical safety.

Customer Service and general inquiries, including any questions on your account:

Phone: 905-522-9200
Fax: 905-522-6228

St. Catharines
Phone: 905-984-8961
Fax: 1-866-731-0451


Toll free: 1-866-458-1236

Email: Click here 

Moving? Click here

New construction and upgraded services:

Customer Connections

Phone: 905-317-4575
Fax: 905-522-8373

St. Catharines
Phone: 905-684-8111 x4825
Fax: 905-323-3461


Upgrading electrical services and service layouts:


Engineering Design:

Please contact Engineering Design for Subdivision Developments and large connections exceeding 5000 kW. Phone: 905-521-4907


Hamilton: 905-522-6611 ext 4739
St. Catharines: 905-684-8111 ext 4739


Learn more about conservation

Media inquiries:

John Friesen, Corporate Communications
Phone: 905-521-4908


​Investor Relations:

Phone: 905-521-4918



Streetlights out:

Hamilton: 905-546-2098
St. Catharines: 905-684-9764

Note: Streetlights are owned by the municipalities, not Horizon Utilities. For repair of streetlights, please call the numbers listed above. 

Graffiti removal:

Hamilton: 905-540-3220
St. Catharines: 905-323-3459


Purchase inquiries:

If you are interested in doing business with Horizon Utilities Corporation, please complete the Online Supplier Information Form: or email

Website issues:



55 John Street North
Hamilton, ON
L8R 3M8
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St. Catharines
340 Vansickle Road
St. Catharines, ON
L2R 6P7
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Our commitment to accessibility:

Hamilton: 905-522-9200
St. Catharines: 905-984-8961


Office hours:

Monday - Friday
(excluding statutory holidays)
8:30 a.m. to 4:30 p.m.

By mail:

P.O. Box 2249 Station LCD 1
Hamilton, ON
L8N 3E4