Semi-Scheduled Bid MaxAvail – Initial Results
A week’s worth of data provides indications of how semi-scheduled generators are using bid MaxAvail to manage dispatch availability.
Articles by Linton Corbet
Linton is a Senior Software Engineer and Market Analyst, who joined Global-Roam in August 2020.
Before joining the company, Linton worked at the Australian Energy Market Operator (AEMO) for seven years, including four years as an analyst within their demand forecasting team. Before entering the energy sector, he worked as an air quality scientist in the Czech Republic.
What inputs and processes determine a semi-scheduled unit’s 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.
Implemented: Enablement of bid energy MaxAvail for semi-scheduled generators
The change to use MaxAvail from the energy bid, for semi-scheduled units, was implemented on 7 August 2023.
Looking back at FCAS on 1 August 2023
Don’t forget about FCAS when the energy market starts to steal the spotlight.
Price volatility in SA on August 1, 2023
Light winds and a constrained interconnector contributed to elevated prices on 1 August 2023.
An imminent improvement to the bidding and dispatch process for Semi-Scheduled units
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.
Liddell’s unit 4 closes
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.
Delving deeper into dispatch availability self-forecasting performance
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.
RERT cost estimates released for 3 February 2023
Estimated RERT costs published, pushing past the market price cap for dispatched volumes.
Demand shortfall dodges need for large demand side contributions, QLD, 3 Feburary 2023
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…
Palmerston to Waddamana lines returned to service on December 2, 2022
A successful return to service for the Waddamana to Palmerston 220 kV lines following damage sustained during landslides on 14 October 2022.
Exploring aspects of Wind Farm performance in South Australia on Saturday 12th November – through the storm and into the islanding
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.
Wholesale Demand Response in the NEM – One year on by the numbers
Casting a look over wholesale demand response in the NEM, one year on, how has participation grown and the capability been used?
Diverse generator responses to illusive FCAS prices on Wednesday 10th August 2022
The market volatility on Wednesday 10th August 2022 turned out to be illusive. We review unit output by fuel type to study how different generator groups responded on the day (in aggregate) finding increases, decreases and patterns in between.
Rooftop PV output during QLD’s heatwave week 2022 – Part B
In this article we look more closely at 1st and 2nd February 2022 – and particularly at where and when the changes in rooftop PV occurred, narrowing our assessment to south-east Queensland regions. It follows on from Part A which inspected how Queensland rooftop PV output varied at the state level.
Southeast Queensland flooding, 2022 – electricity demand observations
Widespread and heavy rainfall occurred across southeast Queensland during the week ending Sunday 27th February, 2022. The deluge produced some of the highest rainfall totals on record and extensive flooding. Did electricity demand drop in association with network outages?
Rooftop PV output during QLD’s heatwave week – Part A – Regional overview
This article – Part A of a 2 part series – reviews how rooftop PV output varied and considers its influence on Queensland demand on the 1st and 2nd of February, 2022.
Demand response dispatched on January 31 2022 in Victoria
Recent WDR activity on January 31 took advantage of the spicy Victorian wholesale energy prices that eventuated in the late afternoon and early evening under unusual circumstances.
Is the predictability of day-ahead demand improving?
Day-ahead demand forecasts will be integral to any future ‘Ahead Market’. We take a look at the current state and accuracy trend of demand forecasts made 24 hours ahead as part of the broader piece of work to feed into GenInsights21.
Potential Tripwire #3 When is a load not a load?
A feature of the upcoming EMMS technical specification that distinguishes demand response units from scheduled loads could impact some users of NEM data, if left unmanaged.