Spot price volatility in South Australia on Thursday (morning) 17th October 2024
The spot price has been bouncing around in South Australia this morning (Thu 17th Oct). Here’s a short record.
Articles by Paul McArdle
One of three founders of Global-Roam back in 2000, Paul has been CEO of the company since that time.
As an author on WattClarity, Paul's focus has been to help make the electricity market more understandable.
Small drop in NEM Mainland Frequency with Stanwell Unit 3 offline
A quick look at a small drop in frequency seen on Wednesday 16th October 2024.
A clarification, about those instances of (potential or actual) disconnection of distributed/rooftop PV
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.
AEMO cancels MSL1 warning for Victoria on Saturday 12th October 2024
At 12:53 on Saturday 12th Oct 2024 AEMO published MN118817 cancelling the MSL1 warning for Victoria.
Forecast ‘Minimum System Load’ (at MSL1 level) back again, for Saturday 12th October 2024
At 06:19 this morning (Saturday 12th October 2024) the AEMO published Market Notice 118803 re-instating the warning for forecast Minimum System Load (at MSL1) in Victoria.
Testing the Heywood interconnector on Friday 11th October 2024, as part of PEC Stage 1
A short note, recording MN118771 about testing for PEC stage 1.
Minor drop in NEM Mainland System Frequency on Friday 11th Oct 2024, most likely related to trip of LYA1
A quick record of the trip of Loy Yang A1 unit just prior to 08:40 (NEM time) this morning … Friday 11th October 2024:
What happened with System Load in VIC on Friday 27th and Saturday 28th September 2024?
With AEMO forecasting possible ‘Minimum System Load’ in Victoria for the coming weekend, we take a look back at (our understanding of) some of what happened on Saturday 27th Sept and Sunday 28th Sept 2024, when similar conditions were forecast.
AEMO reinstates warning about ‘Minimum System Load’ in VIC for Sunday 13th October 2024
A short article referencing MN118749, which was published at 15:05 on Thursday 10th October 2024.
AEMO cancels warnings about ‘Minimum System Load’ in VIC for Sunday 13th October 2024
At 14:58 today (Wednesday 9th October 2024) the AEMO issued Market Notice 118721 cancelling the MSL1 warning for Sunday 13th October 2024.
AEMO to change Constraint Equations used during outages that create a credible risk of SA islanding
A short note about Market Notice 118672, as that will be of interest to many of our readers.
Delta Electricity submits ‘relatively urgent’ Rule Change Proposal for December 2024 credit support deadline
A short note today (thanks to a tip by Thomas MacDonald) about a ‘relatively urgent’ rule change request by Delta Electricity that might help Vales Point operate into 2025.
AEMO forecasts ‘Minimum System Load’ (at MSL1 level) for VIC on Saturday 12th and Sunday 13th October 2024
On Monday afternoon 7th October 2024, the AEMO has issued Market Notices declaring risk of ‘Minimum System Load’ in the Victorian region for the upcoming weekend.
Mainland frequency trends lower for a few minutes on late Sunday afternoon 6th October 2024.
A short article looking at system frequency late afternoon Sunday 6th October 2024.
Drop in System Frequency (approx 15:45 NEM time) on Saturday 5th October 2024
Looking back at system frequency, we see a noticeable drop in system frequency around ~15:45 (NEM time) on Saturday 5th October 2024.
(a) There’s no large trip of a coal unit that coincides
(b) But it *might be* the result of a large collective under-performance (relative to Target) across the Semi-Scheduled fleet NEM-wide ?
Lowest point for ‘Market Demand’ in NSW drops lower, on Sunday 6th October 2024
A short article capturing a new lowest point for ‘Market Demand’ in NSW on Sunday 8th October 2024.
Forecast LOR2 for the QLD region on Tuesday 8th October 2024
Prompted by AEMO MN118628 here’s a forward looking view of forecast tight supply-demand balance for QLD on Tuesday evening 8th October 2024.
Small frequency dip with Bayswater unit 3 tripping offline on Wednesday 2nd October 2024
A short article looking at a small drop in system frequency on Wednesday 2nd October 2024, perhaps related to Bayswater unit 3 tripping offline.
AGL’s successful completion of the first two-shifting trial for Bayswater unit 4 (on 7th September 2024)
An update on LinkedIn from Len McLachlan from AGL Energy about a recent trial of two-shifting at Bayswater unit 4 prompts a quick look.
On Friday 27th September 2024, VIC ‘Market Demand’ dropped as low as 1,878MW
Recapping what the lowest point was, for ‘Market Demand, in Victoria on Friday 27th September 2024.