In the draft 2026 ISP, the AEMO materially increased wind capacity factor assumptions for several renewable energy zones. In this article, we compare those assumptions against actual capacity and availability factors for wind units across the NEM in 2025.
Dan adds to our ongoing case study into the events of Monday 26th May 2025, by mapping the dispatch error across all semi-scheduled units for the 16:15 dispatch interval that afternoon.
Finding another use for the relatively recent addition of the ELAV data set for Semi-Scheduled units, we follow on from a RenewEconomy article (in Nov 2024) to trend the availability of the Murra Warra 1 Wind Farm.
On Sunday 1st Sept 2024, aggregate curtailment of Solar Resource from (Semi-Scheduled) Large Solar across the NEM reached 79.2% ... in this follow-on article we explore the question 'WHICH Solar Farms were curtailed ... and WHY?'
In Part 2 of this Case Study, we look at those 15 x Semi-Scheduled units highlighted with large deviations (mostly under-performance) at 17:05 on 27th October 2022 in order to understand more.
Guest author, Ben Willacy, takes a first look at the Generator Statistical Digest 2019 and highlights a few initial observations relating to the performance of wind, solar and storage in this energy transition.