Accounting Procedures for Electricity

The Handbook provides guidance to electricity distribution utilities on accounting procedures and requirements as well as setting out a uniform accounting system.

Accounting Procedures
Last revised
January 1, 2012

Related documents

Accounting Procedures Handbook

The Accounting Procedures Handbook, including Chapter II, the Uniform System of Accounts, was approved by the Board on November 10, 1999.

The OEB has posted a separate document that contains a list of generic accounts that have been opened since the last update of the APH. This document will be updated at regulator intervals upon the establishment of new accounts or changes to existing accounts.

NOTE: Adoption of International Financial Reporting Standards (IFRS) January 1, 2012 (with comparitive figures for 2010) raises certain regulatory accounting issuesThese are discussed here.

Documents Related to the COVID-19 Emergency

Letters on the Accounting Procedures Handbook

Accounting Procedures Handbook - Guidance

From time to time the OEB issues accounting guidance that addresses various matters associated with the APH. To date, this guidance has been labeled as Frequently Asked Questions. As of March 2015, this guidance has been renamed as simply “Guidance” as it may contain clarifications of accounting matters that may arise from other sources other than frequently asked questions.

Other Accounting Guidance related Letters

Date Issue/document
Jul 20-18

The OEB has issued a letter to advise electricity distributors that the OEB is undertaking an initiative to standardize the accounting processes used by distributors relating to RPP wholesale settlements and accounting procedures (including the treatment of unbilled revenue) to improve the accuracy of accounts 1588 - RSVA Power and 1589 - Global Adjustment (the commodity pass-through variance accounts).

Jun 29-17

The OEB has issued a letter containing guidance to licensed distributors, unit sub-meter providers, retailers and other interested parties on the implementation of the Fair Hydro Act, 2017.

Feb 9-17

The OEB has issued a letter providing direction to licensees regarding implementation issues related to the Ontario Rebate for Electricity Consumers Act (2016).


IFRS Related Consultation and Guidance

Note: view the  IFRS consultation webpage for more information.



Apr 30-12

The OEB issued a letter providing guidance for all electricity utilities regarding the impact of the decision by the Canadian Accounting Standards Board (the “AcSB”) to defer the mandatory changeover to International Financial Reporting Standards (“IFRS”) to January 1, 2013.

Jun 13-11

The OEB issued an Addendum to Report of the Board: Implementing International Financial Reporting Standards in an Incentive Rate Mechanism Environment. The Addendum sets out regulatory policy for the transition to IFRS for utility rates rebased using a cost of service methodology and subsequently set using an incentive rate-setting mechanism.

Mar 31-11

The OEB posted a staff Discussion Paper on the Transition to IFRS – Implementation in an IRM Environment.

Mar 15-11

The OEB issued a letter further amending Section 9.1.2 of its Report on Transition to IFRS (originally issued Jul-28-09) to advise electricity distributors regarding the use of IFRS in filing cost of service applications for rates for 2012.

Nov 8-10

The OEB issued an amendment to its Report on Transition to IFRS (originally issued Jul 28-09) to reflect the Canadian Accounting Standards Board pronouncement allowing the option to delay transition to IFRS to January 1, 2012.

Jul 8-10

The Board has issued a depreciation study prepared by Kinectrics Inc. to assist electricity distributors in Ontario in their transition to International Financial Reporting Standards.

Apr 30-10

The OEB issued the draft report of Kinectrics Inc., Asset Amortization Study for the Ontario Energy Board, in relation to electricity distributors for comment to assist Kinectrics Inc. in finalizing their report.

Feb 24-10

The OEB issued a letter clarifying “Accounting for Overhead Costs Associated with Capital Work” to assist utilities with their transition to IFRS.

Jul 28-09

The OEB issued its report on Transition to International Financial Reporting Standards (IFRS) in recognition of the fact that Canadian Generally Accepted Accounting Principles will transition to IFRS applicable to most utilities regulated by the Board effective January 1, 2011

Accounting Procedures Handbook - frequently asked questions

Accounting guidelines