A collation of articles tagged with ‘curtailment’
… but you might also want to look specifically at articles categorised under ‘Curtailment of VRE’.
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.
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?’
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%.
On Sunday 1st September 2024 curtailment of Large Solar yield across the NEM reached as high as 79.2%.
A short record of some large curtailment of Large Solar resource on Saturday 24th August 2024.
Also on social media was a comment by Jess Hunt about low wind conditions in South Australia currently … which has prompted these thoughts.
Dan Lee takes a deeper dive into network and economic curtailment, and shares some charts and data maps that demonstrate seasonal effects, and the geographic spread of units affected.
A chart of the the month-by-month semi-scheduled economic and network curtailment totals, along with the top 3 worst hit units over 2023.
A quick look back at Thu 29th Feb 2024 – a day where afternoon (congestion-based) curtailment of Large Solar in NSW exacerbated the tight supply-demand balance and spot price volatility.
Guest author, Allan O’Neil, takes us several steps further in understanding the events in Victoria on Tuesday 13th February 2024 – especially with respect to VRE (wind and solar) production.
In our third guest authored post this week, Blake Ashton from SA Power Networks talks about the SA islanding event that occurred just over twelve months ago – how SAPN managed solar curtailment, and how their new ‘flexible exports’ option can address future challenges.
Following the low levels of demand over the weekend (Sat 16th and Sun 17th Sept 2023) here’s a few quick notes.
With Q2 drawing to a close, we’re gearing up to produce GenInsights Quarterly Update for this quarter. Timely to look back at Q1 at what was reported about curtailment of wind and solar in that earlier Quarterly Update.
Inspired by the recent article by Tristan Edis (who referenced the GSD2022 in analysis of curtailment of some wind and solar farms), Allan O’Neil follows on with more analysis of the two main types of curtailment. Allan differentiates these as ‘forced curtailment’ and ‘economic offloading’
A short note at a ‘new normal’ condition that we can expect to see increasingly in NEM regions (including QLD) as rooftop PV continues to grow in scale.
Just last Friday the AEMO notified stakeholders more broadly about their new Market Notice Framework about ‘Minimum System Load’ and/or ‘Distributed Photovoltaics (DPV) Contingency’ … prior to Sunday’s new lowest point for minimum demand in South Australia!
Guest author Allan O’Neil puts together an in-depth explainer about system strength and looks at the current approach to system strength management in South Australia, its impacts and the imminent installation of synchronous condensers on the SA grid.
Out of curiosity, and driven by questions received from several people, I’ve invested a bit of time today to delve further into the record low level of Scheduled Demand seen in the Victorian region (and perhaps also across the whole of the NEM) on Saturday 29th August 2020.
A preliminary look at a number of events that happened today, leading to prices spiking to the Market Price Cap in a number of regions, Demand Side Response being very active, and trading desks being very busy.
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On the 4th of February at around 11am energy users in NSW appear to have curtailed their load in response to high prices, resulting in a significant drop in demand. Simultaneously, network conditions and generator rebidding caused the NSW pool price to jump back and forth between extreme prices close to VOLL ($10,000/MWh) and the Market Floor Price (-$1,000/MWh).