A belated and back-dated article, dated for 19th February 2026, which was when the AEMO declared a ‘Scheduling Error’ – Incident #74 with respect to 16th October 2025 as follows:
1) Incident description =
‘From 1230 to 1625 hrs on 16/10/2025, AEMOs Variable Renewable Energy Forecasting System (VREFS) used to forecast Unconstrained Intermittent Generation Forecasts (UIGF) incorrectly produced a 0 MW forecast for 8 wind farms. 3 (COLWF01, GULLRWF2, and STWF1) of these wind farms were using self-forecasts and therefore were not impacted. The remaining 5 (BANGOWF1, BANGOWF2, BODWF1, CROOKWF2, CRURWF1) wind farms were dispatched at 0 MW for intervals between between 1230 and 1510 before the error was progressively rectified, resulting in no scheduling errors in dispatch from 1625 hrs.’
2) Incident Category =
‘SCADA/IT’
3) Incident Duration =
From: 16/10/2025 12:30
To: 16/10/2025 16:25
Duration = 3.92 hours
4) Incident Rectification =
‘AEMO identified the VREFS issue and applied a permanent fix.’
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