A quick note for Monday afternoon 9th December 2024 to provide a record of two sequential alerts triggered by ez2view ‘Notifications’ widget in two sequential dispatch intervals (i.e. 14:20 and 14:25 NEM time) afternoon:
Readers should understand that:
1) This pre-configured alert watches for changes in ‘Market Demand’:
(a) in this case in the Victorian region;
(b) with the alert triggering if the change in a 5 minute period is more than 400MW (up or down).
2) The level of the threshold has been set such that it very rarely triggers;
3) So the fact that it has triggered in two sequential dispatch intervals is very remarkable!
4) A ramp of 903MW in 10 minutes … or roughly twice the size of the Alcoa Portland Aluminium Smelter.
We see the significance in this snapshot from NEMwatch at the 14:25 dispatch interval:
In total, we see that the ‘Market Demand’: ramp has been even greater than that level, over a slightly longer period:
1) That’s 2,679MW at 14:00 to 4,481MW at 14:25
2) Or 1,802MW ramp up in 25 minutes (a 67% increase from what it was at 14:00).
Did some massive cloud bank suddenly swamp rooftop PV in Melbourne?!
check out the NSW demand against the VIC demand, might be an error