Basslink gets final revenue determination for operation as a regulated service
The AER has determined the revenue that Basslink can recover for the Basslink transmission cable for the 2026-30 period, operating as a regulated service.
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.
New FCAS resources dominate enabled levels in 2025
We find the trend for increasing enablement of the 'new' resources has only continued, that the new FCAS resources are the dominant providers of all FCAS services nowadays.
Vales Point impact on frequency appears well mitigated on 2nd February 2026
"And what happened to system frequency?" Our initial inspection indicates there was a very minor impact.
Vales Point units trip on Monday 2nd February 2026
On Tuesday 2nd February we observed the trip of both Vales Point units. Ez2view supports understanding of the event and return to service.
Helpful and unhelpful MW deviations on 15th January 2025
Top 10 units with deviations in support of, and in opposition to, the frequency need around the trip of Callide C units 3 and 4.
Charting the 4-second data following trip of Callide C3 and C4
The trip coincided with the drop in frequency, which happened at the start of the dispatch interval.
Actual lack of reserve level 2 on Friday 19th December 2025 in NSW
The minimum reserve available is projected to be 664 MW between 16:00 and 17:00.
Voluntary Scheduled Resources Guidelines published today, Thursday 27th Nov 2025
Guidelines have been developed to assist VSR Providers understand and assess the requirements for participation in central dispatch.
A look at mainland grid frequency yesterday, November 26th, 2025
A quick look at the data from our frequency logger yesterday, showing the changes in frequency during the period of market volatility.
Daytime price volatility in NSW on November 26th, 2025
A quick snapshot of regional prices, where the spot price in NSW hit the MPC at 11:00am NEM time.
Aldoga Solar Farm on Sunday 12th October 2025 – Part 2
In this article we inspect power deviations from dispatched units that would have contributed to the frequency rise, and the deviations that would have contributed to the correction.
System frequency during simultaneous trips at YWPS3 and YWPS4 on Thursday 16th October 2025
System frequency remained within the NOFB, appears well managed given the supply loss approached 600 MW.
Scarce use of aggregate dispatch conformance to-date
No Mixed aggregate dispatch groups have been registered.
Trended physical/technical availability of Semi-Scheduled units – aggregated
A zoomed-out view of six metrics supports understanding of physical/technical semi-scheduled generator availability.
Daily NOFB exceedances since 2021
We count the number of days each month when there was at least one 4-second measurement outside the NOFB.
Instances of system frequency outside the normal operating band
How common is it that mainland frequency deviates outside the NOFB (normal operating frequency band)?
Tasmanian demand drop on 16 August 2025 – part 2
We follow on from A 292MW drop in "Market Demand" in Tasmania, on Saturday 16th August 2025 enlisting this "Part 2" to understand the sequence of events using 4-second data.
Frequency change with Yallourn unit 2 trip
We assess whether the trip at Yallourn 2 on 26 August 2025 was large enough to drive a frequency disturbance.
Unit deviations from target on Tuesday 19th August 2025
It appears it was unit availability used to set the target for dispatch that went awry, rather than unit output.
High level view of some contributing factors to 19 August frequency spike
Among other aspects, a large dip in solar UIGF aligns with the frequency deviation observed on 19th August 2025.