A frequent intervenor is an intervenor that has participated in 3 or more proceedings in the preceding 12 months. Since 2014, the OEB has required frequent intervenors to file information to help both the OEB and other parties to assess the basis for the intervenor’s interest in a particular proceeding. This process enhances the transparency and credibility of the intervenor framework.
Effective April 1, 2023, the OEB has developed a Frequent Intervenor Form to standardize these filings and require the provision of new information. The Frequent Intervenor Form requires information on matters such as:
- their mandate and objectives;
- their membership and the constituency they represent;
- the types of programs or activities by which they carry out their mandate; and
- their governance structure and how the intervenor’s representatives will report to and receive instructions from the intervenor
For more information about the filing of Frequent Intervenor Forms, please refer to Rule 22 of the OEB’s Rules of Practice and Procedure.
2025 filings
- Association of Major Power Consumers in Ontario (May 12, 2025)
- Association of Power Producers of Ontario (January 28, 2025)
- Building Owners and Managers Association ("BOMA Toronto") (January 30, 2025)
- Canadian Manufacturers & Exporters (January 16, 2025)
- Coalition of Concerned Manufacturers and Businesses of Canada (January 10, 2025)
- Energy Probe (January 14, 2025)
- Federation of Rental-housing Providers of Ontario (January 3, 2025)
- Hydro One Networks Inc. (April 29, 2025)
- Industrial Gas Users Association (IGUA) (January 16, 2025)
- Ontario Greenhouse Vegetable Growers (January 13, 2025)
- Pollution Probe (March 21, 2025)
- The Corporation of the City of Kitchener - Kitchener Utilities (June 4, 2025)
2024 filings
- Canadian Manufacturers & Exporters (March 14, 2024)
- Coalition of Concerned Manufacturers and Businesses of Canada (March 21, 2024)
- Consumers Council of Canada (November 14, 2024)
- Energy Probe Research Foundation (March 21, 2024)
- Environmental Defence (November 13, 2024)
- Hydro One Networks Inc. (May 3, 2024)
- Independent Electricity System Operator (February 7, 2024)
- Independent Electricity System Operator (November 29, 2024)
- Industrial Gas Users Association (IGUA) (March 7, 2024)
- Minogi Corp. (December 11, 2024)
- Pollution Probe (May 14, 2024)
- School Energy Coalition (SEC) (November 14, 2024)
- The Corporation of the City of Kitchener (November 22, 2024)
- Three Fires Group Inc. (December 11, 2024)
- The Society of United Professionals (February 19, 2024)
- Vulnerable Energy Consumers Coalition (November 20, 2024)
2023 filings
- Association of Major Power Consumers in Ontario (April 13, 2023)
- Coalition of Concerned Manufacturers and Businesses of Canada (August 21, 2023)
- Consumers Council of Canada (September 5, 2023)
- Energy Probe Research Foundation (April 24, 2023)
- Environmental Defence (July 24, 2023)
- Green Energy Coalition (January 5, 2023)
- Hydro One Networks Inc. (May 4, 2023)
- Industrial Gas Users Association (July 4, 2023)
- Pollution Probe (April 17, 2023)
- Power Workers' Union (October 11, 2023)
- School Energy Coalition (May 25, 2023)
- Vulnerable Energy Consumers Coalition (April 4, 2023)
2022 filings
- Association of Major Power Consumers in Ontario (Feb 3, 2022)
- Consumers Council of Canada (Mar 25, 2022)
- Energy Probe Research Foundation (Jun 21, 2022)
- Federation of Rental-housing Providers of Ontario (Dec 1, 2022)
- Green Energy Coalition (Jan 4, 2022)
- London Property Management Association (Mar 14, 2022)
- Ontario Education Services Corporation (Jan 10, 2022)
- Pollution Probe (Oct 24, 2022)
2021 filings
- Energy Probe Research Foundation (Jun 1, 2021)
- Federation of Rental-housing Providers of Ontario (Dec 10, 2020)
- Green Energy Coalition (Feb 2, 2021)
- Pollution Probe (Sep 8, 2021)
- Vulnerable Energy Consumers Coalition (Aug 10, 2021)
2020 filings
- Association of Major Power Consumers in Ontario (Jun 26, 2020)
- Consumers Council of Canada (Mar 15, 2020)
- Energy Probe Research Foundation (Jun 1, 2020)
- Federation of Rental-housing Providers of Ontario (Dec 11, 2020)
- Green Energy Coalition (Jan 13, 2020)
- Pollution Probe (Sep 15, 2020)
2019 filings
- Federation of Rental-housing Providers of Ontario (Mar 11, 2019)
- Green Energy Coalition (Feb 7, 2019)
- Pollution Probe (Jul 16, 2019)
2018 filings
- Consumers Council of Canada (Dec 10, 2018)
- London Property Management Association (Jun 20, 2018)
2017 filings
- Consumers Council of Canada (Nov 18, 2017)
- Federation of Rental-housing Providers of Ontario (Dec 29, 2017)
- London Property Management Association (Jun 22, 2017)
- School Energy Coalition (Nov 6, 2017)
- Vulnerable Energy Consumers Coalition (Aug 11, 2017)
2016 filings
- Energy Probe Research Foundation (Jun 28, 2016)
- Federation of Rental-housing Providers of Ontario (Dec 15, 2016)
- Green Energy Coalition (Oct 7, 2016)
- London Property Management Association (Jun 10, 2016)
- Society of Energy Professionals (Jan 21, 2016)
- Vulnerable Energy Consumers Coalition (Aug 12, 2016)
2015 filings
- Consumers Council of Canada (Aug 18, 2015)
- Energy Probe Research Foundation (Jun 18, 2