Large instantaneous jump in ‘Market Demand’ in NSW on Tuesday afternoon 18th February 2025
A relatively large jump in 'Market Demand' in the NSW region from 16:05 to 16:10 on Tuesday 18th February 2025 caught our attention.
All Posts
A look at curtailment through the GSD2024
After reviewing the latest version of our Generator Statistical Digest (GSD), David Leitch shares his top insights about VRE curtailment across the NEM in 2024.
Reviewing LGC creation at Codrington Wind Farm over ~24 years
With the news that Codrington Wind Farm (one of the first in the NEM) is to be closed, we take a quick look at 24 years of history.
Curtailment of Large Solar reaches ~72% (NEM-wide) on Sunday 16th February 2025
Given the situation that unfolded on Sunday 16th February 2025, we take a look at curtailment of Large Solar production (not quite a record).
Indicators of solar farm performance with GSD2024
Seeking indications of possible performance at solar sites announced in the CIS tender of 2024, we inspect statistics of nearby solar farms using the GSD2024.
New lowest-ever* point for NSW ‘Market Demand’ on Sunday 16th Feb 2025 was lower than AEMO’s earlier forecasts
Second article pertaining to the remarkably low level of 'Market Demand' in NSW on Sunday 16th February 2025.
‘Lowest ever*’ point for ‘Market Demand’ in NSW crashes lower, on Sunday 16th February 2025
The bottom has dropped out of the 'record minimum demand' point for NSW on Sunday 16th February 2025.
NEM Mainland Frequency wandering (somewhat more than ‘normal’) on Thursday afternoon 13th February 2025
A quick note with snapshot taken at ~15:11 on Thursday 13th February 2025 looking back at the past 6 hours of NEM Mainland Frequency.
An initial walk through contributions in South Australia on Wednesday 12th February 2025 (i.e. Part 1)
If I had time, we'd explore three separate questions we have about what happened in South Australia on Wednesday 12th February 2025. In this article we take a first pass at one of those...
Spare capacity in South Australia drops below 100MW on Wednesday evening 12th February 2025
A follow-on article focused on the 19:00 dispatch interval on Wednesday 12th February 2025 in South Australia (a very tight period for supply-demand balance).
Guest Authored Posts
Do we have enough gas to wait until nuclear comes along?
Tristan Edis of Green Energy Markets discusses the practicalities of the gap that must be filled by the gas sector under the nuclear power timeline proposed by the Federal Opposition.
The challenge of imperfect foresight: Storage operation in a highly renewable NEM
Josh Boegheim from Powerlink discusses the limitations of perfect foresight assumptions for system planning—and shares results from a recent study that simulated energy storage dispatch using deterministic and stochastic forecasting approaches.
Detailed Analysis
Using the GSD2020 to explore operating patterns across generation types
With the release of the Generator Statistical Digest 2020, Marcelle Gannon takes a look at how it can be useful for identifying and exploring different patterns of generation.
AEMO releases ‘Quarterly Energy Dynamics’ for Q4 2020
Quite a synergistic coincidence today that, at the same time as we are finalizing the release of the GSD2020, we see the AEMO publishes its Quarterly Energy Dynamics for Q4 2020.
Increasing the transparency and correctness of intermittent generation availability information to AEMO
Following up to AEMO's recent Intermittent Generator forum, Marcelle looks at the challenges for wind and solar farms in providing consistently good plant availability information to AEMO and the value of transparency of this...
PPAs aren’t as easy as they used to be!
This is the fourth of a short series of video snippets extracted from the 17th September 2020 presentation by Marcelle Gannon and Jonathon Dyson for the Clean Energy Council entitled ‘Maximising Profitability in the...
How does a wind or solar farm make money?
This is the third of a short series of video snippets extracted from the 17th September 2020 presentation by Marcelle Gannon and Jonathon Dyson for the Clean Energy Council entitled ‘Maximising Profitability in the...
Conformance and compliance–what’s the difference?
This is the second of a short series of video snippets extracted from the 17th September 2020 presentation by Marcelle Gannon and Jonathon Dyson for the Clean Energy Council entitled ‘Maximising Profitability in the...
Do you know your obligations as a Semi-Scheduled Generator?
This is the first of a short series of video snippets extracted from the 17th September 2020 presentation by Marcelle Gannon and Jonathon Dyson for the Clean Energy Council entitled 'Maximising Profitability in the...
Case Study – How to interpret a new NEM constraint and guess what it might do
Given the great interest in the new 'X5 constraint', guest author, Allan O'Neil, has invested some time to pick the new constraint equation to understand (and then explain) what it is, how likely it...