On October 13, 2016, the OEB issued the Handbook for Utility Rate Applications to provide guidance to utilities and stakeholders on applications to the OEB for approval of rates. The Rate Handbook outlines the key principles and expectations the OEB will apply when reviewing rate applications under the OEB’s renewed regulatory framework, Report of the Board: A Renewed Regulatory Framework for Electricity (the RRFE Report). Three alternative rate-setting methods are available to electricity distributors: Price Cap Incentive Rate-setting (Price Cap IR); Custom Incentive Rate-setting (Custom IR); and Annual Incentive Rate-setting Index (Annual IR Index).
On December 9, 2024, the OEB issued a letter identifying a preliminary list of electricity distributors (the Rebasing List) that are scheduled to file a cost of service application in respect of their 2026 rates assuming they opt for the Price Cap IR method. This letter also sets out the deadlines by which notice must be given to the OEB in respect of various other matters relating to the setting of 2026 rates, and by which cost of service applications for 2026 rates are expected to be filed. The following table summarizes these deadlines.
| Action | OEB Deadline |
|---|---|
| Notification from any distributor on the 2026 Rebasing List that will be selecting either the Custom IR, or Annual IR Index method (therefore will not be filing a Price Cap IR rate application) for 2026 rates | January 24, 2025 |
| Notification from any distributor that is currently on Annual IR Index but that plans to file a cost of service rate application under the Price Cap IR method or a Custom IR application for 2026 rates | January 24, 2025 |
| Notification from any distributor that is not included on the 2026 Rebasing List but that plans to file a cost of service application for 2026 rates under the Price Cap IR method (early rebasing) | January 24, 2025 |
| Notification from any distributor on the 2026 Rebasing List that plans to submit a request to defer rebasing | January 24, 2025 |
| Notification from any distributor that plans to file a cost a service application for 2026 rates and that wishes to convert its rate year from May 1 to January 1 | January 24, 2025 |
| Deadline for cost of service applications for January 1, 2026 rates including those distributors that wish to convert from May 1 rates to January 1 rates | April 30, 2025 |
| Deadline for cost of service applications for May 1, 2026 rates and for Custom IR annual update applications | August 29, 2025 |
The following table identifies all 58 rate regulated electricity distributors in Ontario. The table contains links to select documents of a distributor’s rate application. These documents include:
- Key correspondence regarding the status of an application, including the choice of rate-setting method for 2026 rates. For applications to be decided under Delegated Authority, case management letters are used to communicate case steps and dates rather than a letter of direction and procedural order.
- The Notice of Application issued by the OEB and to be published by the distributor, if applicable. The purpose of the Notice is to inform affected ratepayers and other stakeholders of the application, its nature and the impact on affected customers.
- The Decision issued by the OEB when it has made determinations on the application and the subsequent Rate Order and Tariff of Rates and Charges that reflects the Decision.
APPLICATION DOCUMENTS
This table provides a list of select documents related to each application. To view all publicly available documents for the application, click the case number associated with that particular distributor.
DEFINITIONS:
Cost of Service: Distributors rebasing under the Price Cap Incentive Rate-setting method
Price Cap IR: Distributors not rebasing under the Price Cap Incentive Rate-setting method
Custom IR: Distributors filing under the Custom Incentive Rate-setting method
Annual IR: Distributors filing under the Annual Incentive Rate-setting Index method
Case Management Letter: Pursuant to powers granted in Section 6 of the Ontario Energy Board Act, 1998, an employee of the OEB (Delegated Authority) may make a decision on the application without holding a hearing. Certain mechanistic Price Cap IR and Annual IR applications are adjudicated by a Delegated Authority. For these applications, there are normally no formal hearings and thus, no publication requirements of a formal Notice of Application. The process and timelines associated with the assessment of the applications by OEB staff are communicated to distributors by way of Case Management letters.
NoA: Notice of Application
Click the column header to sort the table by Distributor, Process, Application Received or Updated on. Click the column again to switch between ascending/descending order. To filter results, start typing in the search field below. As you type the table will re-sort to only show rows that match what you type (e.g. typing 'Niagara' will show only the rows for Canadian Niagara Power Inc., Niagara Peninsula Energy Inc. and Niagara-on-the-Lake Hydro Inc.).
Distributor | Process | Letters | App. Received | NoA | Decision / Rate Order | Updated |
|---|---|---|---|---|---|---|
Alectra Utilities Corporation | Price Cap IR | 2025/08/14 | NoA | Decision and Rate Order (Dec 16-25) Final Rate Order (Dec 22-25) | 2025/12/23 | |
Algoma Power Inc. | Price Cap IR | 2025/08/14 | NoA | Decision and Rate Order (Dec 18-25) | 2025/12/19 | |
Atikokan Hydro Inc. | Price Cap IR | (Oct 23-25) | 2025/10/09 | (Mar 19-2026) | 2026/03/20 | |
| Attawapiskat Power Corporation | ||||||
Bluewater Power Distribution Corporation | Price Cap IR | (Nov 10-25) | 2025/10/27 | (Mar 19-2026) | 2026/03/20 | |
Burlington Hydro Inc. | Cost of Service | 2025/04/16 | NoA | (Dec 11-2025) | 2026/03/20 | |
Canadian Niagara Power Inc. | Price Cap IR | 2025/08/14 | NoA | Decision and Rate Order (Dec 18-25) Final Rate Order (Dec 22-25) | 2025/12/23 | |
Centre Wellington Hydro Ltd. | Price Cap IR | 2025/08/14 | NoA | Decision and Rate Order (Dec 19-25) | 2025/12/23 | |
Cooperative Hydro Embrun Inc. | Price Cap IR | OEB Case Management Letter (Aug 29-25) | 2025/08/15 | Decision and Rate Order (Dec 16-25) | 2025/12/23 | |
E.L.K. Energy Inc. | Price Cap IR | (Dec 12-25) | 2025/11/28 | (Mar 26-2026) | 2026/03/27 | |
Elexicon Energy Inc. | Price Cap IR | 2025/07/15 | NoA | (Jan 15-26) (Feb 5-26) | 2026/02/06 | |
Enova Power Corp. | Price Cap IR | 2025/08/14 | NoA | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Entegrus Powerlines Inc. | Cost of Service | 2025/08/28 | NoA | Decision and Rate Order (Mar 19-26) | 2026/03/20 | |
ENWIN Utilities Ltd. | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
EPCOR Electricity Distribution Ontario Inc. | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
ERTH Power Corporation | Price Cap IR | OEB Case Management Letter (Nov 13-25) | 2025/10/30 | (Mar 19-2026) | 2026/03/20 | |
Essex Powerlines Corporation | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Festival Hydro Inc. | Price Cap IR | 2025/08/14 | NoA | Decision and Rate Order (Dec 16-25) | 2025/12/19 | |
| Fort Albany Power Corporation | ||||||
Fort Frances Power Corporation | Annual IR | (Oct 23-25) | 2025/10/09 | (Mar 19-2026) | 2026/03/20 | |
GrandBridge Energy Inc. | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Greater Sudbury Hydro Inc. | Price Cap IR | (Oct 23-25) | 2025/10/09 | (Mar 19-2026) | 2026/03/20 | |
Grimsby Power Incorporated | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Halton Hills Hydro Inc. | Price Cap IR | Letter re: COS Deferral (Mar-04-25) (Nov 27-25) | 2025/11/13 | 2025/11/27 | ||
Hearst Power Distribution Co. Ltd. | Price Cap IR | Letter re: COS Deferral (May-23-25) OEB Response re: COS Deferral (Jun-18-25) | 2025/10/09 | NoA | (Mar 31-2026) | 2026/04/01 |
Hydro 2000 Inc. | Price Cap IR | OEB Case Management Letter (Nov 13-25) | 2025/10/30 | (Mar 19-2026) | 2026/03/20 | |
Hydro Hawkesbury Inc. | Price Cap IR | 2025/08/14 | NoA | (Mar 26-2026) | 2026/04/01 | |
Hydro One Networks Inc. | Custom IR Update | 2025/08/29 | NoA | Partial Decision and Rate Order (Dec 17-25) Decision and Rate Order (Dec 23-25) | 2025/12/29 | |
Hydro One Remote Communities Inc. | Price Cap IR | (Dec 4-25) | 2025/11/20 | (Mar 19-2026) | 2026/03/20 | |
Hydro Ottawa Limited | Custom IR Application | 2025/04/15 | NoA | 2025/08/25 | ||
Innpower Corporation | Price Cap IR | 2025/08/14 | NoA | Decision and Rate Order (Dec 19-25) | 2025/12/23 | |
| Kashechewan Power Corporation | ||||||
Kingston Hydro Corporation | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Lakefront Utilities Inc. | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Lakeland Power Distribution Ltd. | Price Cap IR | 2025/10/09 | NoA | Partial Decision and Rate Order (Mar 31-2026) | 2026/04/01 | |
London Hydro Inc. | Price Cap IR | (Dec 4-25) | 2025/11/20 | (Mar 19-2026) | 2026/03/20 | |
Milton Hydro Distribution Inc. | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Milton Hydro Distribution Inc. | Accounting Order | 2025/07/31 | NoA | Decision and Order (Dec 12-25) | 2026/02/04 | |
Newmarket – Tay Power Distribution Ltd. | Price Cap IR | 2025/08/20 | NoA | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Niagara Peninsula Energy Inc. | Price Cap IR | Letter re: COS Deferral (Jan-14-25) OEB response re: COS deferral (Jan 29-25) | 2025/08/08 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Niagara-on-the-Lake Hydro Inc. | Price Cap IR | 2025/08/14 | NoA | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
North Bay Hydro Distribution Limited | Price Cap IR | (Dec 4-25) | 2025/11/20 | 2025/12/05 | ||
Northern Ontario Wires Inc. | Price Cap IR | (Oct 23-25) | 2025/10/09 | (Mar 19-2026) | 2026/03/20 | |
Oakville Hydro Electricity Distribution Inc. | Annual IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Orangeville Hydro Limited | Price Cap IR | 2025/10/09 | NoA | (Mar 31-2026) | 2026/04/01 | |
Oshawa PUC Networks Inc. | Cost of Service | 2025/04/29 | NoA | 2025/05/20 | ||
Ottawa River Power Corporation | Price Cap IR | OEB Case Management Letter (Nov 10-25) | 2025/10/27 | (Mar 19-2026) | 2026/03/20 | |
PUC Distribution Inc. | Price Cap IR | OEB Case Management Letter (Nov 13-25) | 2025/10/30 | (Mar 19-2026) | 2026/03/20 | |
Renfrew Hydro Inc. | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 | |
Rideau St. Lawrence Distribution Inc. | Price Cap IR | OEB Case Management Letter (Nov 19-25) | 2025/11/05 | (Mar 26-2026) | 2026/03/27 | |
Sioux Lookout Hydro Inc. | Price Cap IR | Letter re: COS Deferral (Apr-29-25) OEB response re: COS deferral (May 27-25) OEB Case Management Letter (Nov 13-25) | 2025/10/30 | (Mar 19-2026) | 2026/03/20 | |
Synergy North Corporation | Price Cap IR | (Dec 4-25) | 2025/11/20 | (Mar 19-2026) | 2026/03/20 | |
Tillsonburg Hydro Inc. | Price Cap IR | (Dec 4-25) | 2025/11/20 | 2025/12/05 | ||
Toronto Hydro-Electric System Limited | Custom IR Update | (Aug 26-2025) | 2025/08/12 | (Dec 11-2025) | 2025/12/15 | |
Wasaga Distribution Inc. | Price Cap IR | OEB Case Management Letter (Nov 13-25) | 2025/10/30 | (Mar 19-2026) | 2026/03/20 | |
Welland Hydro Electric System Corp. | Price Cap IR | (Nov 25-25) | 2025/11/11 | (Mar 19-2026) | 2026/03/20 | |
Wellington North Power Inc. | Price Cap IR | Letter re: COS Deferral (Dec-18-24) OEB response re: COS deferral (Jan 29-25) | 2025/10/28 | (Mar 19-2026) | 2026/03/20 | |
Westario Power Inc. | Price Cap IR | OEB Case Management Letter (Aug 28-25) | 2025/08/14 | Decision and Rate Order (Dec 11-25) | 2025/12/12 |
ASSOCIATED DECISIONS
| Date | Issue/document |
|---|---|
| January 29, 2026 | The OEB has issued a Decision and Order in the matter of Renewable Generation Connection Rate Protection Compensation Amounts effective January 1, 2026. |
| December 11, 2025 | The OEB has issued a Decision and Order in the matter of regulatory charges effective January 1, 2026, for the Wholesale Market Services rate and the Rural or Remote Electricity Rate Protection charge. |
| June 19, 2025 | The OEB has issued its Decision and Order updating the retail service charges (EB-2025-0199) and its Decision and Order updating the distribution pole attachment charge (EB-2025-0200), effective January 1, 2026. |
| June 17, 2025 | The OEB has issued its Decision and Order in the matter of Distribution Rate Protection (DRP) effective July 1, 2025. |
UPDATES
| Date | Issue/document |
|---|---|
| November 27, 2025 | The OEB has issued a letter re: Review of Fixed Monthly Charge for microFIT Generator Service Classification. |
| October 31, 2025 | The OEB has issued a letter which sets out the Cost of Capital Parameter Updates for cost-based rates applications that have an effective date commencing in 2026. |
| June 20, 2025 | The OEB has issued the tranche assignments which outline the filing dates for 2026 Incentive Rate-setting Mechanism (IRM) applications. |
| June 19, 2025 | The OEB has posted an updated version of Chapter 3 of the Filing Requirements for 2026 Rate Applications. |
| June 11, 2025 | The OEB has issued a letter on the inflation factors to be used to set rates for certain electricity transmitters and electricity and natural gas distributors for 2026. |
| May 15, 2025 | The OEB has posted the slide deck used for the Cost of Service Orientation for 2026 and 2027 Filers. |
| March 31, 2025 | The Ontario Energy Board (OEB) has released updated guidelines and a revised Retail Transmission Service Rates (RTSR) model for 2026 Rate Applications. These guidelines introduce a new RTSR rate specifically for electric vehicle (EV) charging stations, as part of the Electric Vehicle Integration Initiative. Additionally, the guidelines encourage utilities to review and, if necessary, update the cost allocation basis for their RTSR rates. Over the past year, the OEB conducted a review of the current RTSR model to assess the need for a comprehensive revision. The review, along with stakeholder feedback, concluded that while changes to the model and structure of RTSR rates are not required at this time, updates to the allocation of wholesale transmission costs to distribution customer classes could be beneficial. Although these updates are not mandatory, utilities are encouraged to implement them. |
| February 5, 2025 | The OEB has posted updated versions of various models to be used for 2026 Rate Applications. Queries regarding the models should be sent to ratemodels@oeb.ca. Cost of Service Models:
Applicable to both Cost of Service and Incentive Rate-setting Mechanism (IRM):
Incentive Rate-setting Mechanism (IRM) Models:
|
| December 9, 2024 | The OEB has posted updated Filing Requirements for 2026 Rate Applications. |
| December 9, 2024 | The OEB has issued a letter that sets out a preliminary schedule of cost of service filers for the 2026 to 2029 rate years and establishes important filing and notification deadlines. |