Four answers we received during the 2025 Clean Energy Summit in Sydney this week
Dan provides his review for ACES 2025, and tries to answer some of the questions we were pondering going into the conference.
system strength
Transgrid’s Project Assessment Conclusions Report for System Strength released on Monday 14th July 2025
Transgrid's Project Assessment Conclusions Report for System Strength assessed more than 100 individual solutions aimed at helping to meet its system strength obligations under the National Electricity Rules.
AEMO notes ‘Update to system strength requirements in North Queensland’ to cater for 0 x Gladstone units online
With all 6 x Gladstone units expected to be offline by the end of the day due to Industrial Action, very timely that AEMO MN124047 notifies the market that 'The system normal equations have...
With YWPS1 and LYA2 back online, Victorian directions for System Strength cancelled
On Friday morning 15th November 2024 we see the return to service of both YWPS1 and LYA2 - coincident with the cancellation of Victorian directions for System Strength.
Why the directions (to 4 units) with 6 coal-fired units still online in Victoria?
We (and others) wondered, why the direction (especially for 4 units) to replace the System Strength from the ‘missing’ coal units?
AEMO directs 4 units on in Victoria, to cover System Strength shortfall
On Thursday morning 14th November 2024, the AEMO has directed 4 different units to operate, to cover a potential system strength shortfall in the Victorian region.
AEMO directions for System Strength in Victoria, on Thursday morning 24th October 2024
It's not (yet?) a frequent occurrence, so worth noting that AEMO has directed 2 units at Murray to synchronise and operate as a synchronous condenser from 08:00 (NEM time) on Thursday 24th October 2024...
Eraring Power Station closure delayed by 2 years (or maybe 4?)
Thursday morning 23rd May 2024 saw a media News Conference and announcement that Eraring closure will be delayed until August 2027 ... or possibly as far out as August 2029.
System Strength considerations for NSW via Market Notices … a low point reached in 2023 Q4
AEMO points to the TransGrid document from Wed 14th Feb 2024 'NSW Synchronous Generation - interim advice for System Normal requirement'.
Forecast low System Strength of concern in NSW for Tuesday 14th November 2023 … first time ever?
A quick note about a forecast by AEMO of shortfall in system strength in NSW region for Tuesday 14th November 2023.
System Strength constraints strike again in northern QLD – this time on Wednesday 6th September 2023 (Part 1 of Case Study?)
On Wednesday 6th September many Semi-Scheduled (wind and solar) units in northern QLD were 'constrained down' for System Strength reasons. We take a first look as part 1 of a Case Study (more parts...
Engineering the transition and control of electricity
Kate Summers gave the keynote address for the "System and market design for a high renewables future" session at the CEC's Clean Energy Summit earlier this week. This article contains the full text of...
AEMO reports on (and webinar about) System Strength, Inertia and NSCAS
Three other reports released by AEMO on 1st December 2022 will also make for interesting reading.
Who gets to run when everyone bids the same? A crash course in disorderly bidding and tie-breaking
Marcelle explores the little-understood concept in NEM dispatch of the tie-break principle, using the new 'Constraint Dashboard' widget in ez2view.
Interim boost to wind and solar in South Australia from ElectraNet’s new Synchronous Condensers
From 10:00 today (Friday 10th September 2021), ElectraNet’s new synchronous condensers (which have been under testing) will be deliver a boost to Semi-Scheduled units in South Australia.
New all-time record for NEM-wide wind production on Saturday 24th July 2021 (above 6,000MW for the first time)
Saturday evening 25th July 2021 saw the instantaneous production from wind farms across the NEM surge past 6,000MW for the first time and set a new 'all-time' record that's substantially higher than the previous...
New record for NEM-wide wind production on Tuesday 20th July 2021
A look this morning at the new record (set yesterday - Tuesday 20th July) for NEM-wide wind production.
Initial look at System Strength constraints (curtailing north QLD Solar and Wind) in Event 3 on Tuesday 25th May 2021
We've started exploring the constraint data from the QLD region for back on Tuesday 25th May 2021 (with the Callide C4 catastrophe) and here's some initial information.
Three Events Yesterday – with Mainland Frequency as low as 48.555Hz
Part 5 in an expanding series, looking at what happened in QLD on Tuesday 25th May 2021 - this one looking at system frequency.
Cyclone in Western Australia douses solar production in South Australia on Tue 13th April 2021
Looking back at Tuesday 13th April 2021 - a day in which the ex-tropical cyclone Seroja in Western Australia caused some wobbles in rooftop solar PV output in South Australia.