Agencies and Corporations
The Independent Electricity System Operator (IESO)
Manages the reliability of Ontario's power system and forecasts the demand and supply of electricity. The IESO also operates the wholesale electricity market, while ensuring fair competition through market surveillance.
IESO
Tel: 905-403-6900
Toll-Free: 1-888-448-7777
Fax: 905-403-6921
E-mail: helpcentre@IESO.ca
IESO Reception (Accounts Payable, Human Resources, etc.)
905-855-6100
IESO Media Line (for media inquiries)
416-506-2823
Mail:
Independent Electricity System Operator
Attention: (Subject Area)
Station A, Box 4474
Toronto, ON
M5W 4E5
Courier:
Independent Electricity System Operator
Attention: (Subject Area)
655 Bay Street, Suite 410
Toronto, ON
M5G 2K4
More contact information on the IESO website
The Ontario Energy Board (OEB)
An independent adjudicative tribunal responsible for regulating Ontario's natural gas and electricity sectors. Part of the OEB's mandate is to protect the interests of consumers with respect to prices and the reliability and quality of electricity service.
Ontario Energy Board
P.O. Box 2319
2300 Yonge Street
Toronto, Ontario, Canada
M4P 1E4
Main switchboard: 1-888-632-6273 (toll-free) or 416-481-1967
Business hours: Monday-Friday, 8:30 a.m. to 5:00 p.m.
Fax: 416-440-7656
More contact information on the OEB website
The Ontario Power Authority
Address as of October 31, 2005:
120 Adelaide Street West
Suite 1600
Toronto, ON
M5H 1T1
Main: 416-967-7474
Fax: 416-967-1947
Email: info@powerauthority.on.ca
www.powerauthority.on.ca
Hydro One
A provincially-owned company that operates the majority of Ontario's transmission lines, Hydro One also serves as an electricity local distribution company in some areas of the province.
Contact information on the Hydro One website
Ontario Power Generation (OPG)
A provincially-owned electricity generation company - its hydroelectric, nuclear and fossil fuel stations generate approximately 70% of Ontario's electricity.
Ontario Power Generation (corporate address)
700 University Avenue
Toronto, Ontario
Canada, M5G 1X6
Main Switchboard: (416) 592-2555
Toll Free: 1-877-592-2555
More contact information on the OPG website.
Page Last Updated: September 20, 2006
