A bout of severe weather for many parts of south-eastern Australia brought challenging weather conditions which appear to have impacted variable renewable energy forecasts for the NEM. The case study delves into forecast differences on the 7th, 8th and 9th of September 2023.
The very fast FCAS markets started on 9 October 2023 and now a Basslink outage presents a confusing situation for required and enabled levels.
The requirement for the very fast raise contingency service is set to increase to 100 MW. We review availability and bids to consider the impact.
A year ago we reviewed the market outcomes of wholesale demand response (WDR) in the NEM. It’s been 2 years now, providing a new milestone from which to review participation and impact. Can we say yet, whether the mechanism is a square peg in a round hole?
The results of the recent MTPASA (Medium-Term Projected Assessment of System Adequacy), published on 17 October 2023, led a declaration of low reserve conditions in Market Notice 110284.
The new 1-second FCAS markets have been operational since the 9th October. We take a look to find out how it has fared.
Very Fast FCAS, because it operates at a faster timescale, can arrest the rise or fall in frequency more rapidly than the current fast service and therefore provides an avenue to mitigate the costs of needing to procure increasing levels of the existing fast service. The markets (raise and lower) are going live on 9 October 2023.
Spot price volatility was experienced in Queensland and New South Wales on 4th September 2023.
A week’s worth of data provides indications of how semi-scheduled generators are using bid MaxAvail to manage dispatch availability.
It is indispensable to understand how the semi-scheduled unit availability gets produced to optimally manage the critical inputs and comprehend dispatch outcomes. This article explains the key inputs and processes, focusing on the dispatch timeframe.
The change to use MaxAvail from the energy bid, for semi-scheduled units, was implemented on 7 August 2023.
Don’t forget about FCAS when the energy market starts to steal the spotlight.
Light winds and a constrained interconnector contributed to elevated prices on 1 August 2023.
AEMO is re-enabling the ‘MaxAvail’ figure in bids for Semi-Scheduled units. It will act as a limit on capacity available, feeding into the NEMDE dispatch process for the unit. We look at how Semi-Scheduled plant have currently been treating MaxAvail in the bid and share some insights.
A quick note to show the last dispatch interval of output from Lidell Unit 4, with the two remaining units slated to follow suit in the coming days.
We delve deeper into dispatch availability self-forecasts and the assessment process to further enhance our understanding of this important aspect, testing sensitivity to gate closure times and requirements on minimum intervals.
Estimated RERT costs published, pushing past the market price cap for dispatched volumes.
The forecast for Friday (3 February 2023) evening’s demand was that a new all-time maximum would occur and a lack of reserve was expected. To maintain the grid in a reliable operating state AEMO signaled to the market that the…
A successful return to service for the Waddamana to Palmerston 220 kV lines following damage sustained during landslides on 14 October 2022.
In this article we explore the impacts on wind power generation as the storms passed through, in the leadup to the transmission line trip at 16:39 (NEM time, reflected in the market by the 16:45 interval) on 12 November 2022.