A collation of articles pertaining to VRE … which we refer to in the GRC2018 and GenInsights21 as ‘Anytime/Anywhere Energy’.
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.
Read MoreWith 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.
A short record of some large curtailment of Large Solar resource on Saturday 24th August 2024.
A short article in conjunction with GenInsights Quarterly Updates for 2024 Q2, trending NEM-wide % VRE over 12 days in June 2024.
We’ve ticked over the end of 2024 Q2, so here’s a short note to recap the long-range wind production statistics.
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).
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.
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.
Coincidentally today, David Osmond has posted about ‘another challenging week’ for VRE NEM-wide (a week beginning Wed 8th May 2024 – the day NSW hit the Cumulative Price Threshold).
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.
Almost 2.5 years since we released GenInsights21, today we’re publishing this article that contains a precis of the analysis included as Appendix 27 under the title ‘Exploring Wind Diversity’.
Taking a quick look at the dispatch interval through this period of low aggregate wind harvest that also saw lowest aggregate VRE (Wind + Large Solar).
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.
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.
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 site location.
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’
Tristan Edis from Green Energy Markets takes a deep dive into generator performance across the NEM. He provides his take on which wind and solar farms have outperformed and underperformed, through the recent renewable investment boom.
Curtailment seems like a simple concept, until you look closely at the details. In this article, Marcelle looks at how to estimate curtailment at wind and solar farms and explores some of the traps.
In terms of diversity of intermittent supplies, we need to understand that we’re not just comparing data series on a scale that runs from “highly correlated” to “random”…