Questions about electricity bills with closure of Liddell looming
Around eight days till the scheduled closure of Liddell's next-to-close unit (and prompted by an article in the AFR), we take a quick look at how they've been bidding.
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.
Some analysis of electricity usage (and solar production) at home
The long weekend provided an opportunity to review 10 years of electricity bills at home to look at net usage patterns and net solar injections from our home rooftop solar system. What have we...
New low-point for demand in NSW on Easter Sunday, 9th April 2023
It's Easter Sunday (9th April 2023) and it looks like NSW minimum demand has fallen further from the prior record set 6 months ago.
AEMO published Preliminary Report into NSW brief market suspension on 17th March 2023
On 6th April 2023 the AEMO published this preliminary report into the brief market suspension that occurred in NSW on 17th March 2023.
AFR reports Callide C co-owner (with CS Energy) goes into voluntary administration
AFR and the Australian (and elsewhere?) there are reports of the co-owner of Callide C (with CS Energy) being placed in voluntary administration.
Reviewing what happened in NSW and QLD on Thursday 16th March 2023 (with Actual LOR2, Volatility and Reserve Trader almost triggered, etc) … part 1
Given the significance of the event (Reserve Trader almost triggered on Thursday 16th March - 34 days till the closure of Liddell Unit 4) we're investing some time in exploring more detail of the...
Spot price volatility in QLD and NSW on Sunday 19th March 2023
A quick record of the start of volatility on Sunday evening 19th March 2023.
New all-time record for Operational Demand in QLD on Friday 17th March 2023 … but not for Market Demand
Looks like a new all-time record for Operational Demand in the QLD region early this evening, Friday 17th March 2023.
Actual LOR2, and a run of volatility in NSW and QLD … only 34 days till the closure of Liddell unit 4
Looks like we've (sort of) dodged the Reserve Trader bullet on Thursday evening 16th March 2023 ... but still poses plenty of questions.
AEMO commences RERT negotiations in NSW on Thursday 16th March 2023
Second post for this afternoon/evening following AEMO announcement to commence RERT Negotiations for this evening in NSW.
Late ‘summer’ hot blast drives demand higher in NSW and QLD
Some late hot weather (in Autumn 2023) is providing for some activity in the market
Splitting the ‘X5 constraint’ into two … double trouble?
From 08:00 (NEM time) this morning, the old 'X5 constraint' (i.e. formerly formally known as 'N^^N_NIL_3') has been split into two (i.e. addressing separately risk of tripping of either/both Bendigo to Kerang 220kV line...
Case Study of 17:05 on 27th October 2022 … part 3 … (+861MW AggROT – source of AvailGen)
In Part 3 of this Case Study, we look at the source of the Dispatch Interval Availability forecasts for these units at 17:05 on 27th October 2022 (i.e. Self-Forecast or something else, incl AWEFS/ASEFS).
Case Study of 17:05 on 27th October 2022 … part 2 … (+861MW AggROT – individual units)
In Part 2 of this Case Study, we look at those 15 x Semi-Scheduled units highlighted with large deviations (mostly under-performance) at 17:05 on 27th October 2022 in order to understand more.
Case Study of 17:05 on 27th October 2022 (+861MW AggROT for Semi-Scheduled units) … Part 1 of (an uncertain number)
In Part 1 of this Case Study, we start to look at the large collective under-performance across all Semi-Scheduled units (i.e. Wind and Large Solar) at 17:05 on 27th October 2022. More to come...
AER notice … ‘Market notice from the WEMDRA – Referral to dispute resolution panel’ … about scheduling error on 10th August 2022
A short note following on from the Scheduling Error experienced by AEMO on 10th August 2022.
Some revelations in GenInsights Q4 2022 about Aggregate Raw Off-Target for Semi-Scheduled units
In today's article (a third snippet from GenInsights Quarterly Update for Q4 2022) we take a look at levels of large 'Aggregate Raw Off-Target' (i.e. large collective deviations away from Target), which continue to...
Observation 13/22 from GenInsights21 – is the Semi-Scheduled category sustainable or scalable?
Here on this site, and also in real discussions in the offline world, we have been pondering this question for a number of years. For instance, it was pondered in Theme 13 (‘What’s the...
Coal generation gets a run in the UK to ensure supply meets demand
Another quick article today - this to record the rare use of coal in the UK on a cold evening with insufficient other supply.
The never-ending story? More delays in return-to-service at both Callide C3 and C4
A short article today noting the additional delays in return-to-service expectations for both Callide C3 and C4.