Murraylink back in service, from Friday 19th April 2024
Murraylink had been offline on an outage, but returned to service on Friday 19th April 2024
Read MoreSeasonal Record of Events in the Market
Collections of events that we see happening in the NEM, categorised in terms of the seasons in which they occur.
NEM-wide wind generation above 6,000MW for the first time in ~3 weeks
A short article capturing how NEM-wide wind production rose above 6,000MW briefly in the morning of Tue 23rd April 2024 … first time since the afternoon of Tue 2nd April 2024.
Generation gone with the wind
Ashleigh Madden of WeatherZone reports that a cold front has marched across southern Australia, breaking the week-long wind lull.
Summer reflections
Guest author, Carl Daley from EnergyByte, provides this summary of summer 2024 – covering price volatility, consolidation of the twin peaks dynamic, and BESS performance.
NEM-wide wind lull stretches extends to a full week (Tue 16th April 2024), and has another week to go!
A quick look at a period of low wind harvest across the NEM in April 2024 that’s already stretched ~7 days and looks like it might have more days to come …
Tasmania’s grid frequency on Friday 12 April 2024
Three data points points help to highlight the change in grid frequency in Tasmania on 12 April 2024.
Low wind production on Monday morning 15th April 2024
A short article to record low wind, particularly in SA and VIC on Monday morning 15th April 2024 – hence elevated prices.
Trip of 550MW of industrial load in Tasmania on Friday 12th April 2024
A belated article recording how (on Friday 12th April at 10:48) the Sheffield – Farrell No.2 220 kV line tripped during restoration due to fault on the line, disconnecting ~550MW of major industrial load in Tasmania.
Network outage (currently underway) on Murraylink DC interconnector
Whilst thinking about interconnectors, there’s an outage currently underway on Murraylink.
Fast frequency recovery, on Wednesday 3rd April 2024
Fourth article on Wed 3rd April 2024, pertaining to the earlier coincident trip of ER01 and ER02 units at Eraring Power Station.
AEMO Market Notice 115944 about trip of ER01 and ER02
AEMO Market Notice 115944 notifies that the coincident trip of ER01 and ER02 was at 13:22 NEM time on Wednesday 3rd April 2024.
Replaying four dispatch intervals on Wed 3rd April 2024 with the ER01 and ER02 trip (Part 2)
In this second short article for the day, we Time-Travel ez2view back to 4 x Dispatch Intervals surrounding the coincident trip of ER01 and ER02 at Eraring Power Station.
Simultaneous trip of ER01 and ER02 drops mainland frequency in the NEM
A first article noting simultaneous trip of Eraring units 1 and 2 on Wednesday afternoon 3rd April 2024.
Recapping aggregate solar yield in Queensland’s ‘wet week’ prior to Easter 2024
A quick look back at the period before easter 2024, which was forecast to be a wet week in QLD … looking particularly at solar yield.
Case Study of inertia supplied by source in the NSW grid on Tuesday 14th November 2023
With GenInsights Quarterly Update for 2023 Q4 completed, and some time till the end of 2024 Q1, we’ve looked back at Tuesday 14th November 2023 (when AEMO had concerns about low System Strength in NSW) and looked at the level of inertia actually seen in the grid. A useful Case Study to say ‘what would have happened without Eraring?’
Weatherzone forecasts possibility of Wind Farm (high wind speed) Cut Outs
A Weatherzone forecast of potential high wind-speed cut-outs at some Wind Farms in the coming days will be of interest to some WattClarity readers.
Missing megawatts and phantom generation
Seven days ago, AEMO notified the market of a Scheduling Error from 24th Jan 2024 to 7th March 2024. A client asked us what it meant – so guest author Allan O’Neil has helped to explore and explain.
The earlier fire at Torrens Island switchyard (Mon 25th March 2024)
Yesterday we wrote briefly about ‘Electrical fire in switchyard at Torrens Island Power station’ following a tip on 7News. In that news update, 7News mentioned that there was an earlier fire at the switchyard on Monday 25th March 2024. With…
The fire at Torrens Island switchyard (Wed 27th March 2024) curtailed the Torrens Battery
With ‘next day public’ bid data, we see the impact the switchyard fire had on Torrens Island BESS on Wed 27th March 2024.
Electrical fire in switchyard at Torrens Island Power station
A quick article following a 7News Adelaide report of an electrical fire at Torrens Island power station.