Strengthening Cyber Security in Ontario’s Electricity Sector
August 27, 2025 The OEB has issued version 3.0 of the Ontario Cyber Security Standard, effective September 22, 2025. This updated Standard introduces new requirements for licensed electricity distributors and transmitters (collectively referred to as utilities) to report cyber security incidents to the Independent Electricity System Operator (IESO) and to the OEB. This step is a key…


