IESO Annual Cold Weather Preparedness Survey for Generators and Transmitters
October 5, 2026
In preparation for the upcoming winter season, the IESO will be conducting its annual Cold Weather Preparedness Survey in coordination with generation and transmission facilities. Severe cold weather conditions can present operational challenges that may affect the IESO’s ability to maintain reliable system operations. The data collected through this survey will inform planning efforts to ensure the continued reliability of grid operations throughout the winter period. A survey link will be distributed via email to the relevant market participants.
The IESO will be sending an email invitation to complete the survey and is requesting owners and/or operators of generation and transmission facilities for their responses by October 30. More information on the IESO’s Winterization Guidelines for generation and transmission facilities can be found in the IESO Winterization Guidelines Document.