Allan O'Neil unpacks a proposal under consideration by the AEMC to apply “runway” cost allocation to contingency FCAS, explaining how this could materially change who pays for frequency security in the NEM.
A quick record of some volatility today in Regulation (and Contingency) FCAS prices in Tasmania on Wednesday 5th November 2025.
A brief article to note the continued impact of the Tailem Bend to Tungkillo line outage on FCAS prices.
A short post to note some price volatility for the 'Lower 1 Sec' contingency FCAS commodity in SA today, with prices flickering between the FCAS price floor and the market price cap.
Paul Moore of Viotas look at recent supply-demand dynamics within the contingency FCAS markets and whether demand response can play a role.
Another short article with this trend from the ez2view ‘Trends Editor’ to summarise the overall trend of (monthly average) prices in the 8 x Contingency FCAS markets focused on the NSW region.
Using the latest GSD – GSD2024 – we take the opportunity to reflect on FCAS enablement and how enabled levels are changing between technology types.
Friday 31st January 2025 (appeared to) experienced a very large drop in demand in NSW in a single dispatch interval - but we're now suspecting some form of data/operational glitch. However we wonder, if...
A 2024 review of the trend in the very fast FCAS services captures enablements, availabilities and costs.
A quick snapshot of some volatility in Contingency Raise FCAS Prices in QLD spanning Wednesday 9th October 2024, Thursday 10th October 2024, Friday 11th October 2024.
A quick article recording the drop of NEM Mainland Frequency below the lower bound of the NOFB on Tuesday morning 12th November 2024.
Alex Leemon of Gridcog delivered this presentation about Big Battery Revenues in the NEM at All-Energy in Melbourne last week.
Following a presentation with the CEC, Linton shared some insights into FCAS Regulation costs for wind and solar units over last calendar year.
The release of GSD2023 supports a deep dive into its 10-year FCAS history section. We inspect three units of differing technology and make use of the data extract to uncover trends in participation.
Six observations from a chart summarising how capacity, availability and volumes enabled have changed over the early phase of the very fast FCAs markets, since commencement on October 9, 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.
An article in the Australian this morning alerted me to yesterday's Federal Court ruling against AGL Energy for not supplying contingency FCAS services (from Bayswater and Loy Yang A) when enabled by NEMDE. Here's...
The new 1-second FCAS markets have been operational since the 9th October. We take a look to find out how it has fared.
Because we’ll be referring back to it in future, we’ve lifted out Figure 8 from the MASS version 8 (p36/39) and included it here in this belated (and back-dated) article