CSIRO releases the 2024-25 GenCost Final Report on Tuesday 29th July 2025
The CSIRO published the final version of their 2024/25 GenCost report yesterday.
All Posts
Lower 1-second FCAS volatility continues in SA
A brief article to note the continued impact of the Tailem Bend to Tungkillo line outage on FCAS prices.
NEM-wide wind generation exceeds 10GW for the first time, on Friday evening 25th July 2025
A belated post to note a new all-time record for wind production was broken on Friday evening.
Basslink flows shift since end of agreement on 30th June 2025
An agreement restraining how Basslink is bid into the energy market has ended, resulting in changes in bidding and energy flows.
Four questions we’re pondering ahead of the 2025 Clean Energy Summit in Sydney next week
A primer ahead of the CEC’s Clean Energy Summit in Sydney next week, highlighting just a few of the many questions on our minds.
Volatility within the contingency FCAS market in SA today, Thursday 24th July 2025
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.
Frequency Performance Payments 44 days in
An initial review of payment and cost outcomes of the first 44 days of financial operation of the FPP arrangements.
Suspect SCADA drove data discrepancy on 9th December 2024
The incident description in the scheduling error declaration provides us with a glimpse into the underlying cause.
A quick view into constraints on the Heywood interconnector, on Tuesday 22nd July 2025
A quick view of our congestion map where constraints on the Heywood interconnector may elevate risk of high energy and FCAS prices this week.
Final incident report on the power system incident of 13th February 2024 released
In July 2025 AEMO released the final report into the review of the major power system event of 13 February 2024.
Guest Authored Posts
The increasingly stochastic and volatile NEM
Oliver Nunn from Endgame Economics argues that we must begin to think about the distribution of prices in the NEM as a function of weather.
Not all renewable projects are created equal: Why approval times vary dramatically across Australia
Alice Matthews examines how approval times for renewables vary widely by state and technology — with NSW wind projects facing the longest delays.
Detailed Analysis
GSD 2023 Uncovers Features in FCAS Enablement and Bidding
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.
Putting Monday’s record-breaking demand in QLD into context (22nd Jan 2024)
Still trying to make sense of what did and didn't happen in QLD last night, Dan Lee provides some context to how yesterday's record-breaking demand compares to similar historical events.
The early wind farms reaching 20 years: how are they performing?
With Challicum Hills Wind Farm recently celebrating its 20th anniversary, Dan Lee takes a look into the long-term trend of technical and commercial performance of the oldest wind farms in the NEM.
Dan Lee’s reflections about ‘the year that was in 2023’ via the WattClarity insight service
Yesterday (Thu 22nd Dec 2023), Dan Lee posted a summary of WattClarity service through 2023 on our company website. Today I'm sharing that with WattClarity readers here.
Case Study (Part 2) of Low % VRE NEM-wide on 3rd and 4th July 2023
The second part of an ongoing case study examining two successive days of low VRE generation in early July 2023. This part examines IRPM, earlier forecasts of available generation and maps the availability by...
Case Study (part 1) of low % VRE NEM-wide on 3rd and 4th July 2023
A brief article as a first Case Study looking at Mon 3rd and Tue 4th July 2023, in conjunction with the compilation of GenInsights Quarterly Updates for 2023 Q3.
Demand Response as Market Participant: Square Peg in Round Hole?
A year ago we reviewed the market outcomes of wholesale demand response (WDR) in the NEM. It’s been 2 years now, providing a new milestone from which to review participation and impact. Can we...
Long or short on storage? A look into price signals for duration
Dan Lee looks into utility-scale storage in Queensland - including the need for megawatt-hours, the state of the build-out, and the current market price signal for duration.