The ‘Gas Market Review Report’ released on 22nd December 2025
It’s Monday 22nd December 2025 and the Federal Government has released it’s much-awaited Gas Market Review report.
Eventful Days
A +460MW jump in NSW demand to 13:10 on Saturday 20th December 2025
It seemed that it might be worth documenting a +460MW jump in ‘Market Demand’ in NSW on Saturday afternoon to 13:10 (NEM time) on 20th December 2025.
Frequency wandering south, on Sunday afternoon 21st December 2025
Another short article about (what looks to be) another period of VRE-induced frequency weakness, this one on Sunday afternoon 21st December 2025.
Actual lack of reserve level 2 on Friday 19th December 2025 in NSW
The minimum reserve available is projected to be 664 MW between 16:00 and 17:00.
… but then the cooler change arrived in NSW, on Friday afternoon 19th December 2025
At 14:55 we note the temperature’s dropped markedly in and around Sydney, and the demand growth has abated as well…
NSW ‘Market Demand’ past 12,000MW … how high will it go (on Friday 19th December 2025)?
At 13:45 (NEM time) on Friday 19th December 2025 we see the NSW demand climbing higher and more quickly than forecasts ... how high will it go?
Was cloud cover the driver of the steep increase in ‘Market Demand’ at lunchtime in NSW on Friday 19th December 2025?
Wondering if unforeseen cloud cover might have been a trigger for the steep rise in 'Market Demand' at lunchtime Friday 19th December 2025.
Lunchtime volatility in NSW on Friday 19th December 2025
A quick snapshot from NEMwatch at 12:30 (NEM time) on Friday 19th December 2025, to mark an earlier-than-forecast arrival of prices above $1,000/MWh.
Spot price elevated already Friday morning 19th December 2025 in a very hot NSW
A quick note with a snapshot from NEMwatch at 10:55 (NEM time) on Friday 19th December 2025 to record some elevated prices that we’ve seen already this morning.
Violation of the ‘N>MPWW_94T_71’ constraint equation, on Friday 19th December 2025
A short note to highlight the ‘N>MPWW_94T_71’ constraint equation, which is violating in the 09:55 dispatch interval (NEM time) on Friday 19th December 2025.
Bayswater unit 2 returning to service, albeit later than expected, on Friday 19th December 2025
Bayswater unit 2 is in the process of returning to service on Friday morning 19th December 2025.
Looking ahead to Friday afternoon/evening 19th December 2025 in NSW
At 07:55 NEM time on Friday 19th December 2025 we take a look towards this afternoon/evening.
That’s a wrap, on Thursday evening 18th December 2025
Wrapping up a series of articles on Thursday 18th December 2025 with this NEMwatch snapshot at 19:35 (NEM time).
The violation of the ‘N>NIL_998_18’ constraint equation
Documenting the violation of the ‘N>NIL_998_18’ constraint equation on Thursday 18th December 2025.
About the delay in expected return to service of Vales Point 5
This morning we noted the delay in return to service for Vales Point unit 5 - here, we take a look.
Evening volatility underway in NSW on Thursday 18th December 2025
Thursday evening 18th December 2025 is upon us now, and the volatility in NSW has commenced – as we see in this NEMwatch snapshot at 18:20 (NEM time).
AEMO signals intention to negotiate RERT contracts as evening supply–demand tightens in NSW on Thursday 18th December 2025
In the last few minutes the AEMO have issued a market notice signalling its intention to commence RERT negotiations for the NSW region during this evening’s predicted period of supply-demand tightness.
‘Actual LOR1’ in NSW from 15:43 on Thursday 18th December 2025
At 15:43 (NEM time) on Thursday 18th December 2025, the AEMO issued MN131786 noting 'Actual LOR1' in NSW.
Forecast violation for 3 x System Normal constraint equations on Thursday evening 18th December 2025
Another short note as Thursday afternoon 18th December 2025 advances, to flag the forecast violation of 3 different constraint equations in NSW this evening.
The ‘#NSW1_E_20251218’ constraint equation, on Thursday 18th December 2025
A quick note, about the ‘#NSW1_E_20251218’ constraint equation (which is invoked in the ‘#NSW1_E_20251218’ constraint set) – at the 13:00 dispatch interval (NEM time) early Thursday afternoon 18th December 2025.