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.
Read MoreVRE (Variable Renewable Energy)
A collation of articles pertaining to VRE … which we refer to in the GRC2018 and GenInsights21 as ‘Anytime/Anywhere Energy’.
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).
Keeping up with the curtailment 2024: A little? too much? or much ado about nothing?
Drawing from our freshly released GSD2024, Dan provides some deeper insights into curtailment in the NEM, beyond the headline totals that were a topic of much online discussion earlier this week.
Berrybank 1 and Berrybank 2 Wind Farms offline since Tuesday morning 4th February following wind turbine collapse
Prompted by a reader (and an ABC article) we take a look at Berrybank 1 & 2 Wind Farm following the turbine tower collapse on Tuesday 4th February 2025.
A couple of wind turbines returned to service at Murra Warra 1 Wind Farm in Victoria
Finding another use for the relatively recent addition of the ELAV data set for Semi-Scheduled units, we follow on from a RenewEconomy article (in Nov 2024) to trend the availability of the Murra Warra 1 Wind Farm.
AEMO publishes ‘Statement of Need’ for MSL Transitional Services
AEMO has, on Monday 23rd December 2024 published this Statement of Need for MSL Transitional Services.
Locations of last week’s CIS winners vs known areas of congestion
After a suggestion from a reader, Dan plots the locations of the 19 winning CIS projects announced last week against economic and network curtailment data.
AEMO’s 2024 Intermittent Generator Forum provides renewed awareness for wind and solar generators
Information spanned a wide range of topics related to intermittent generator forecasting, and included a guest presentation by the AER.
AER sends clear message on self-forecasting behaviours
Semi-scheduled generators shouldn’t treat self-forecasts as commercial parameters. The regulator holds significant concerns with the biasing of self-forecasts for commercial benefit.
AEMO publishes an overview of their ‘Minimum System Load procedure’ for Victoria
The AEMO’s publication today (Fri 1st Nov 2024) of their ‘Victorian Minimum System Load Procedure Overview’ 3-page PDF document will be well received.
A clarification, about those instances of (potential or actual) disconnection of distributed/rooftop PV
On Thursday 10th October 2024, we published ‘What happened with System Load in VIC on Friday 27th and Saturday 28th September 2024?’ and, in doing so, listed some times when rooftop PV was disconnected (or consideration was given to the same). In this article (following some detail from a reader) we classify these events in three categories.
(Up to) 75% of Large Solar capability curtailed across the NEM, on Sunday 22nd September 2024
With new ‘lowest’ points for demand in NSW reached over the weekend, today we take a quick look back at curtailment across Large Solar Farms right across the NEM.
Curtailment (spillage) of Large Solar reaches 2/3 of total resource, on Saturday 24th August 2024
A short record of some large curtailment of Large Solar resource on Saturday 24th August 2024.
AEMO commences publishing actual intermittent generators (SCADA) availability data to the EMMS Data Model
The AEMO began publishing actual intermittent generators (SCADA) availability data:
(a) to the EMMS Data Model in the Production environment from August 13th 2024 and
(b) to NEMWeb from August 14th 2024.
Trended NEM-wide % VRE over 12 days in June 2024
A short article in conjunction with GenInsights Quarterly Updates for 2024 Q2, trending NEM-wide % VRE over 12 days in June 2024.
Final figures for wind production through 2024 Q2
We’ve ticked over the end of 2024 Q2, so here’s a short note to recap the long-range wind production statistics.
Where’s the wind gone, through 2024 Q2? … with June perhaps even worse than April or May!
Extending the ‘worm line’ cumulative trend of wind production through 2024 Q2 (to 22nd June) and comparing to 2023, 2022, 2021 and 2020 reveals a picture that is, at the same time, both frightening … but also completely expected (at least for some).
Correlation between low wind Capacity Factor and low IRPM (NEM-wide) in recent evenings + Thursday evening looks likely to be low, as well.
Given what’s happened for Monday, Tuesday and Wednesday evening this week (and even tighter supply-demand balance forecast for Thursday evening) we take a look at the correlation between low IRPM and low Capacity Factor across all Wind Farms.
How predictable is the wind (a short Case Study of Thursday evening 30th May 2024)?
An (initial and) short review of the solid block of high aggregate wind yield over the ~3 day date range (late Tuesday 28th May 2024 to late Friday 31st May 2024) … and how much this was expected in advance.