AEMO releases its 2020 Electricity Statement of Opportunities (ESOO)
This morning (Thursday 27th August 2020) we saw the AEMO release the 2020 edition of the Electricity Statement of Opportunities.
Case Study of 5 Events (between 11:00 to 15:00) on Wednesday 7th November 2018 … where aggregate Raw Off-Target was above 300MW for Semi-Scheduled units
This 15th Case Study is longer than the earlier 14 as it deals with 4 discrete instances of extreme level of collective under-performance, and 1 instance of over-performance, all within a 4-hour timeframe on the same day. A day which appears to have had widespread weather activity affecting the output of BOTH Wind and Solar across 3 Regions. A challenging day!
Some late winter mainland volatility – Monday evening, 24th August 2020
Some SMS alerts notified me of some volatile dispatch intervals this evening in mainland regions. So I took a quick look…
Solar eats a large hole in QLD daytime Scheduled Demand … lowest level in 16 years on Sunday 23rd August!
Tis the season for records, it seems, with Queensland seeing a very low level of Scheduled Demand during the day today – Sunday 23rd August 2020.
Friday 21st August 2020 sees a new record set for peak and average production across Wind Farms across the NEM
Yesterday (on Fri 21st Aug 2020) we saw a new record set for BOTH daily peak instantaneous output across all wind farms in the NEM, and also daily average output across all wind farms in the NEM.
Case Study of 03:45 on Monday 15th October 2018 (aggregate Raw Off-Target +308MW for Semi-Scheduled units)
This is the 13th Case Study in this series (looking at each of 98 extreme incidents). We’re looking at an event on 15th October 2018 that seems to heavily feature high-wind cut-out as the primary driver for collective wind farm under-performance.
Quantifying pandemic effects on power demand in Australia’s National Electricity Market
Guest author, Mark Todoroff, examines operational demand figures for each region to quantify the impact of COVID-19 on the NEM.
Case Study of 16:05 on Wednesday 19th December 2018 (aggregate Raw Off-Target +309MW for Semi-Scheduled units)
This is the 13th Case Study in this series (looking at each of 98 extreme incidents). Note I have skipped 2 events earlier in 2018 and will come back to publish case studies of them – this one covers the last event in 2018.
Case Study of 16:05 on Friday 28th September 2018 (aggregate Raw Off-Target–333MW for Semi-Scheduled units)
This is the 12th Case Study in this series (looking at each of 98 extreme incidents). This one is simpler than the 11th Case Study!
What effect has Stage 4 Lockdown in Victoria had on electricity consumption in the NEM?
In this 5th article in a series, we look at the impact on electricity consumption of Stage 4 Lockdown associated ‘State of Disaster’ in Victoria
Analysis of my home battery + solar system’s first year performance
Guest author, Andrew Wilson, reviews the performance of his home solar + battery system at the one year mark after installation.
Case Study of 02:35 on Saturday 15th September 2018 (aggregate Raw Off-Target +355MW for Semi-Scheduled units)
This is the 11th Case Study in a series (looking at extreme outcomes of Aggregate Raw Off-Target for Semi-Sched units). We’ve rolled into 2018, now and (coincidence?) this one is much more complex than the first 10 from the earlier years …
Case Study of 22:40 on Monday 18th December 2017 (aggregate Raw Off-Target -310MW for Semi-Scheduled units)
This is the 10th Case Study in a series working through 98 discrete dispatch intervals of extreme Aggregate Raw Off-Target for Semi-Scheduled events. This Case Study looks at only 1 of 5 occasions of extreme collective OVER-performance.
Solar production suffers significantly (NEM-wide) today with widespread cloud and rain event
Some quick notes today, to document high-level data (to be explored later) relating to some significantly depressed solar harvest data today due to the widespread cloud/wind event.
Case Study of 19:25 on Thursday 5th October 2017 (aggregate Raw Off-Target +305MW for Semi-Scheduled units)
This 9th case study in this series advances us into October 2017, where we see another example of an extreme outcome for collective under-performance. Most notably this happens across 5 Wind Farms (with one unit completely tripping).
Case Study of 16:20 on 28th September 2016 (aggregate Raw Off-Target +894MW for Semi-Scheduled units)
This 8th case study in this series presents tabular results for all Semi-Scheduled DUIDs which were operational at the time of the SA System Black event.
Case Study of 13:10 on Thursday 23rd June 2016 (aggregate Raw Off-Target +320MW for Semi-Scheduled units)
This 7th case study in a series takes a look at 1 of 3 dispatch intervals during 2016 that saw extreme under-performance (in aggregate) across all Semi-Scheduled plant.
Case Study of 04:30 on Thursday 8th January 2015 (aggregate Raw Off-Target -314MW for Semi-Scheduled units)
This 6th case study in a series takes a look at only 1 of 5 Dispatch Intervals featuring over-performance in a total of 98 that saw extreme Aggregate Raw Off-Target performance across all Semi-Scheduled plant (rare over-performance and more common under-performance).
Case Study of 16:35 on Wednesday 15th October 2014 (aggregate Raw Off-Target +443MW for Semi-Scheduled units)
For the 5th Case Study in this series (looking at individual outcomes of extremes in aggregate Raw Off-Target performance across all Semi-Scheduled plant) we look at an even rarer time when the aggregate discrepancy was above 400MW. This time collective under-performance.
5-minute settlement – Why it makes such a difference to utility scale storage in Australia’s National Electricity Market
Guest author, Warwick Forster, examines the delayed but impending move to 5-minute settlement for the NEM and the potential effects on utility scale storage.