System frequency drop with trip at Loy Yang A4 on Wednesday 14th August 2024
A short record of a coal unit trip around the time of a system frequency drop. on Wednesday 14th August 2024.
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.
GenInsights Quarterly Updates for 2024 Q1 belatedly released, on Mon 12th August 2024
A belated article about the belated release (on Monday 12th August 2024) of GenInsights Quarterly Updates for 2024 Q1.
Spot price volatility (in SA only?) on Tuesday evening 6th August 2024
A quick article about evening volatility (in South Australia only?) on Tuesday 6th August 2024
Evening burst of volatility across the NEM on Monday 5th August 2024
A slightly longer summary (compared to this morning’s) of some evening volatility (across the NEM) on Monday evening 5th August 2024.
Morning burst of volatility across the NEM on Monday 5th August 2024
A quick summary of some morning volatility (particularly SA, VIC and SA) on Monday morning 5th August 2024.
A (very!) quick look at bidding behaviour (NEM-wide) over recent days
Curiosity drove us to take this initial (and very quick) look at bidding behaviour, NEM-wide, across the past 14 days in relation to recent NEM-wide price volatility.
Callide C3 offline until expected return to service on Monday 26th August 2024
A short initial article, 5 days after Callide C3 came offline again for another forced outage … during a period that’s seen multi-region spot price volatility.
Volatile prices, across all 5 regions, for the 3rd evening in a row
A quick snapshot of evening volatility across the NEM on Wednesday 31st July 2024.
Keep an eye on the Cumulative Price … especially in South Australia
Following recent market volatility, here’s a quick look at the current trend of Cumulative Price for each region.
Quarterly Reviews (for 2024 Q2) from AEMO and AER released same day … on Wednesday 24th July 2024.
On Wednesday 24th July 2024, the AEMO and AER *both* published their quarterly reviews of 2024 Q2 … here are some quick notes for future reference.
Trended NEM-wide % VRE over 12 days in June 2024
A short article in conjunction with GenInsights Quarterly Updates for 2024 Q2, trending NEM-wide % VRE over 12 days in June 2024.
Trended NEM-wide IRPM over 9 days in June 2024
A short article in conjunction with GenInsights Quarterly Updates for 2024 Q2, trending NEM-wide IRPM over 9 days in June 2024.
Will Tasmania see a new all-time maximum demand early next week?
Looking forwards to some tight supply-demand balance (and potentially record-breaking demand) for mornings early next week in Tasmania.
Has the past 7 days seen more Wind Farm output than ever before?
We’ve clocked over into Friday 26th July 2024 – here’s a quick record of how wind yield from Wind Farms across the NEM has been on a sustained high the past week.
Changed (lower) output profile for Kogan Creek from early July 2024
A question from a WattClarity reader prompts this quick article about reduced output at Kogan Creek, and some questions about why.
Tamar Valley CCGT switches off on Tue 23rd July (after running for almost 7 weeks straight)
A quick record of Tamar Valley CCGT coming offline yesterday (Tue 23rd July 2024) after 40 days of solid operations through a low-rain and low-wind winter in Tasmania.
Has the ‘wind drought’ that plagued 2024 Q2 ended?
A quick look (on Sunday 17th July 2024) at recent NEM-wide wind production patterns into 2024 Q3.
Two news updates from CS Energy on Wed 17th July 2024 … the (final) Brady Report (about Callide C4), and the Hartz EPM Report (on the Cooling Towers)
On Wednesday 17th July 2024, CS Energy released the Brady-Heywood report (about Callide C4 failure on 25th May 2021) and the HartzEPM Report (about CallideC3 failure on 31st Oct 2022) … and an Action Plan in response to both.
First operations of any BDU (Wandoan BESS) on Tuesday 16th July 2024
It’s day 1 of the CEC’s Clean Energy Summit … perhaps a fitting day to see first operations of a (single unit) bi-directional unit?!
One more delay to Return-to-Service for Callide C4 … another 40 days added to the outage
In the last MT PASA DUID Availability data update for Friday 12th July 2024 the return to service expectation for the repaired Callide C4 unit has been delayed again another 40 days … now 50 days out, till Saturday 31st August 2024.