By: Nigel Bankes
Decisions Commented on: Ontario Energy Board, “Decision and Order, EB-2022-0200, Enbridge Gas Inc, Application for 2024 Rates – Phase 1”, December 21, 2023 [Enbridge Decision]; British Columbia Utilities Commission, “FortisBC Energy Inc. Application for Certificate of Public Convenience and Necessity for the Okanagan Capacity Upgrade Project”, Decision and Order G-361-23, December 22, 2023 [Fortis Decision].
PDF Version: Utility Law Meets Net Zero
Utility connections for gas, electricity, and water tend to be long-lived, capital-intensive projects that typically depreciate over the expected life of the asset. At the same time, depreciation rates should also reflect the risk that an asset may be abandoned or cease to be “used and useful” before the end of its physical life. To give an easy (non-climate) example, suppose that a mine seeks an electrical utility connection. The dedicated distribution line that the mine requires might be expected to have a useful life of 40 years, but the mine itself only has proven reserves for a twenty-year life. If the local utility provides service, it will seek approval to depreciate that line over a maximum of a 20-year period. If it were to use a 40-year period and the mine shut down as expected when the ore body was exhausted after 20 years, the utility would have a stranded asset; that is to say it would have an asset that had lost its utility before the end of its physical life and for which the utility could not obtain a return of the undepreciated cost of the asset (50%).