https://iesoqa-public.sharepoint.com/Pages/News/Day_1-34_Advisory_Notices_Summary.aspx IESO Day 1-34 System Advisory Messages Sun, 12 Jul 2026 00:00 EST http://www.ieso.ca/SiteAssets/ieso-logo.gif http://www.ieso.ca en-us Copyright 2016 http://www.ieso.ca/sector-participants/rss-feeds/day-1-to-34-advisory-notices-summary/advisory-notice?cid=B8DAF6E5-C2B6-434F-BD53-C90FE57CD1D8&rid=11146364 Voltage Reduction Test Scheduled Thu, 09 Jul 2026 12:06 EST 11146364 256836 1 Voltage Reduction Test Scheduled The IESO will be performing a 3% and 5% voltage reduction test on Tuesday 2025/07/23 Thu, 23 Jul 2026 09:00 EST Thu, 23 Jul 2026 14:00 EST Thu, 09 Jul 2026 12:06 EST Thu, 09 Jul 2026 12:06 EST Alert http://www.ieso.ca/sector-participants/rss-feeds/day-1-to-34-advisory-notices-summary/advisory-notice?cid=B8DAF6E5-C2B6-434F-BD53-C90FE57CD1D8&rid=11158452 Advanced Notice of Conservative Operations Fri, 10 Jul 2026 08:34 EST 11158452 256856 1 Advanced Notice of Conservative Operations Advanced Notice of Conservative Operations for forecasted extreme temperatures and adverse conditions. The IESO will take actions as required to maintain reliability, such as committing additional generation, rejecting or revoking planned outages, or other actions appropriate for the circumstance. Tue, 14 Jul 2026 08:00 EST Tue, 14 Jul 2026 22:00 EST Fri, 10 Jul 2026 08:34 EST Fri, 10 Jul 2026 08:34 EST Action