Seasonal Solar Shapes
A one-on-one conversation today, and a bit of curiosity, drove me to trend NEM-wide Solar yield, capacity factor, and curtailment.
curtailment
A collation of articles tagged with ‘curtailment’
… but you might also want to look specifically at articles categorised under ‘Curtailment of VRE’.
Keeping up with the curtailment 2025: Beneath the headline numbers
This latest instalment of our annual review into solar and wind farm curtailment across the NEM, looks at outcomes in 2025 and highlights increasingly divergent results by region and by asset as network constraints, pricing dynamics and seasonal weather conditions interact.
Unpacking some of the drivers of volatility in NSW today, on Wednesday 26th Nov 2025
Today in NSW we saw large price spreads, material network curtailment, wild swings in demand, and several other factors unfold. This article summarises some of the high-level drivers of today's events.
Opaque Congestion and Hidden Curtailment … such as on Tue 24th June 2024 with the ‘N-DPWG_63_X5’ constraint set invoked
It was now just over 5 years ago when Marcelle wrote ‘Not as simple as it appears – estimating curtailment of renewable generation’. This week's invocation of the 'N-DPWG_63_X5' constraint set provides a great case study to illustrate some of the complexities!
My unofficial report on an unofficial ‘Energy Week’ in Melbourne 5th to 9th May 2025
From Monday 5th May to Friday 9th May 2025 was like an unofficial Energy Week in Melbourne for me, out-and-about at a few events. Here's my record of some of what happened...
Aligning business cases with the current, and future, reality
Following his presentation at the CEC's Wind Industry Forum, Jonathon Dyson shares lessons learned from helping developers and operators of wind projects in solidifying their business case.
Four days in the NEM in four minutes
Dan shares a short time-lapse video which demonstrates four days worth of activity in the NEM, highlighting the impact of network congestion in QLD and NSW.
Curtailment at New England Solar Farm – Sat 22nd and Sun 23rd February 2025
A question from a client led me to take a (very quick) look at curtailment over the recent weekend (Saturday 22nd and Sunday 23rd February 2025) at New England Solar Farm 2 ... with this article a prompt for something deeper that will follow later...
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.
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.
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.
Curtailment concerns provide a view of the future
Reserve levels and curtailment estimates of November 27 indicate looming transmission challenges for the future.
Availability utilisation on 27 November 2024 in NSW
Separating curtailment from being priced out, we uncover features of unit utilisation by fuel type on the 27th November 2024.
Four NEM-related themes from COP29
After returning from COP29 in Baku, Dan shares his thoughts about energy transition challenges in international electricity markets, and how they intersect with what we're seeing in the NEM.
(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.
Which Solar Farm DUIDs were curtailed at 12:35 on Sunday 1st September 2024?
On Sunday 1st Sept 2024, aggregate curtailment of Solar Resource from (Semi-Scheduled) Large Solar across the NEM reached 79.2% ... in this follow-on article we explore the question 'WHICH Solar Farms were curtailed ... and WHY?'
Curtailment of Wind Resource (i.e. Semi-Scheduled) across the NEM reaches 53.6% on Sunday 1st September 2024
Whilst not reaching the heights of curtailment of Semi-Scheduled Large Solar, on Sunday 1st September 2024 curtailment of Wind yield across the NEM reached as high as 54%.
Curtailment of Solar Resource from (Semi-Scheduled) Large Solar across the NEM reaches 79.2% on Sunday 1st September 2024
On Sunday 1st September 2024 curtailment of Large Solar yield across the NEM reached as high as 79.2%.
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.
Low wind harvest in South Australia
Also on social media was a comment by Jess Hunt about low wind conditions in South Australia currently ... which has prompted these thoughts.