AEMO identifies Power System Oscillations in ‘Polygon of Pain’ (Briefing Session – Wednesday 25th August)
A short note from AEMO's weekly newsletter - about power system oscillations in west Murray region (VIC/NSW)
Articles by Paul McArdle
Paul was one of the founders of Global-Roam in February 2000. He is currently the CEO of the company and the principal author of WattClarity. Writing for WattClarity has become a natural extension of his work in understanding the electricity market, enabling him to lead the team in developing better software for clients.
Before co-founding the company, Paul worked as a Mechanical Engineer for the Queensland Electricity Commission in the early 1990s. He also gained international experience in Japan, the United States, Canada, the UK, and Argentina as part of his ES Cornwall Memorial Scholarship.
NEM-wide minimum demand (in winter) drops lower on Sunday 15th August 2021 … and Renewables Share in VIC higher
Sunday 15th August saw lowest level of Operational Demand in the NEM for a winter period, NEM-wide. This also led to a number of other outcomes (including higher renewable penetration, negative prices, ... and...
A list of (some of) the factors contributing to the volatile price outcomes seen in Q2 2021 – particularly QLD and NSW
Prompted by last Friday's publication of the AER's 'Wholesale Markets Quarterly' for Q2 2021, here's a tabulated summary of some of the contributing factors of spot price volatility (and hence high average prices) for...
Do you know what’s causing some increased latency on P5MIN data files on MarketNet in recent weeks (Potential Tripwire #4)?
Re-posted with update: In recent weeks we have noticed a trend towards increased latency in the creation of the ‘PUBLIC_P5MIN_*.csv’ files published by AEMO on MarketNet, and we wonder if you can help us...
Explosion at Eskom’s Medupi Unit 4 in South Africa at 22:50 on Sunday 8th August 2021
Hydrogen explosion in South Africa (at Eskom's Medupi unit) will inevitably draw comparisons to the explosion at Callide C4 on 25th May 2021. Use caution in following those links!
Power system stress – with record demand and insufficient supply in New Zealand on Monday 9th August 2021
Following a tight supply-demand balance in New Zealand on a winter Monday evening 9th August 2021, leading to unserved energy, here's a quick review of what information I could find.
Fire at ‘Victoria Big Battery’ as food for thought in relation to battery chemistry
Some quick thoughts, spurred by Simon Hackett's comment in relation to the fire at the Victorian Big Battery
Fire at Victoria Big Battery under control – Monday 2nd August 19:21
One Monday evening article noting reports that the fire at Victoria Big Battery is under control.
Fire continues at Victoria Big Battery into Monday morning (10:42am)
Monday's update on the fire at the new 'Victoria Big Battery' - which seems to have mostly come under control by the afternoon.
Victoria Big Battery still burning on Sunday morning 1st August 2021
A short update on Sunday 1st August 2021, about the continuing fire at the Victoria Big Battery.
$1.5b write-down in value of assets at Origin Energy
On Thursday 30th July 2021 Origin Energy announced a large impairment on several different types of assets - its own generation portfolio, renewable PPAs, and gas purchase contracts. However the focus in the media...
Three additional pieces of data, with respect to the (fire-affected) ‘Victorian Big Battery’
It's Saturday evening, and here's a look at what additional data I can see, in relation to the fire (and any after-effects) with the Victorian Big Battery.
Not a great start to operations at Victoria’s new ‘Big Battery’! (part 2)
Following the (very brief) initial article early this afternoon, here's some more of what we have been able to determine about today's fire at the new Victoria Big Battery facility near Geelong VIC.
Victoria’s new ‘Big Battery’ on fire (part 1)!
Here's first data about Victoria's Big Battery ... which is on fire on Friday afternoon 30th July 2021 (literally!).
ESB provides ‘finalised’ Energy Market Redesign advice to the Energy National Cabinet Reform Committee.
Some brief notes following the ESB's Media Release about its 'finalised' market redesign advice today.
Peak instantaneous wind generation record continues to tumble – higher still on Sunday evening 25th July 2021
The all-time record for 'peak wind' continues to climb, with a Sunday evening contribution pushing it higher again.
Callide C3 back online on Monday morning, 26th July 2021
A short article marking return to service for the Callide C3 unit, which has been offline since 25th May 2021.
Callide C3 within 8 hours of return to service early Sunday morning 25th July 2021 … but rebid and pushed back further!
Another quick look at the latest date that is visible for Callide C3, and when it's expected to Return To Service.
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...
No sign (yet?) of Callide C3 returning to service
With the prior expectation being we'd see Callide C3 return today (Friday 23rd July), we can't see any output at this point.