Over a period spanning Saturday 20th June to Wednesday 23rd June 2026 the NEM-wide wind yield was relatively low.
In South Australia several factors combined, to produce elevated prices over a number of days. These other factors included:
(a) Particularly low wind yield;
(b) Batteries running dry; and
(c) Constrained imports from VIC (and even counter-priced flows).
A number of articles were written to explore various aspects – with some of those collated here.
On slide from the Endgame seminar today in Brisbane focused on the recent 4-day wind lull in South Australia. Many points resonated, but I want to flag just two ...
As the next step in exploring details of what happened in South Australia on Sunday 21st and Monday 22nd June 2026, we take a closer look at battery operations.
Guest author, Allan O'Neil, goes into some detail of exploring the various factors contributing to the price volatility in South Australia that bookended the night of Sunday 21th June into Monday 22nd June 2026.
Yesterday, I’d asked ‘How bad is the current Wind Lull in South Australia, compared to history?’ … today, I have the answer.
With the wind having awoken in South Australia (late Wednesday 24th June 2026), we ask how long it was asleep for.
A short note on Thursday morning 25th June 2026 to note that the wind has resurfaced from its very late autumn (actually winter) hibernation in South Australia.
I wonder ... if the current 4-day 'Wind Lull' in South Australia is worse than any 4-day stint in South Australia during that infamous NEM-wide wind lull in 2024 Q2?
To follow on from this morning’s article, we see the re-emergence (into Wednesday afternoon 24th June 2026) of prices above $500/MWh in South Australia.
I assume a number of different stakeholders* are conducting their own retrospectives of large-scale** battery operations in South Australia over the recent windless (and quite volatile) days. Here's some questions.
It’s Wednesday morning 24th June 2026 and my pre-configured alerts delivered to ez2view Mobile have been busy – with the arrival of morning prices in South Australia above $500/MWh.
Whilst SA spot prices have been elevated over the past 24 hours (and indeed for days longer), in the past 24 hours the highest point was $845/MWh at the 18:55 dispatch interval (NEM time) on Tuesday evening 23rd June 2026.
Following up on the elevated prices in South Australia, here's a summary of bidding across four days - Friday 19th June 2026 to Monday 22nd June 2026
On Saturday 20th June 2026, aggregate wind yield fell in South Australia ... and has remained low since that time (into Tuesday 23rd June 2026)
A useful comparison, 24 hours apart… 19:35 on Sunday 21st June and Monday 22nd June 2026.
A quick look at flow (and limits) over the VIC-to-SA interconnector on Saturday 20th, Sunday 21st and Monday 22nd June 2026.
At 08:46 (NEM time) on Monday 22nd June 2026 AEMO has published this follow-on MN 144315 noting 'AEMO is not declaring that an LOR3 forecast condition exists for this period'
Also worth noting that the past ~24 hours (Sunday 21st June 2026 into Monday 22nd June 2026) has seen low wind yield across the NEM
Breaking a prolonged period of price stability, we saw prices spike in TAS on Sunday evening 21st June 2026, and then a prolonged period of price action begin for SA through the night and into Monday 22nd June 2026.