What’s happened to those Semi-Scheduled units registered to provide FCAS?
Following a question from a client today, we take a quick look at (some of) what the GSD2024 reveals of FCAS market participation of Semi-Scheduled units.
All Posts
Hot chips, algorithms and electricity markets
Declan Kelly thinks through and discusses competition issues that could arise from the increasing proliferation of auto-bidding software by big batteries in the NEM - and suggests some...
Curtailment at New England Solar Farm – Sat 22nd and Sun 23rd February 2025
A question from a client led me to take a (very quick) look at curtailment over the recent weekend (Saturday 22nd and Sunday 23rd February 2025) at New...
Pronounced ramp in ‘Market Demand’, then subsidence, in South Australia on Saturday 22nd February 2025
Recording a ~500MW ramp and subsidence in ‘Market Demand’ in South Australia on Saturday 22nd February 2025 (including a drop of 229MW in 5 minutes).
A closer look at NEM Mainland Frequency (at 100ms cadence) on Thursday afternoon 13th February 2025 (i.e. Part 2)
Some recent questions prompted this more granular look at NEM Mainland Frequency on Thursday afternoon 13th February 2025
A curious case of UIGF for Hamilton Solar Farm on Wednesday 12th February 2025 (Part1)
Here's a first look at (generating lots of questions about) Hamilton Solar Farm, and particularly the Availability forecast, back on Wednesday 12th February 2025.
Large (+405MW) jump in ‘Market Demand’ in NSW on Thursday 20th February 2025
A second article for Thursday 20th February 2025 looking at a noticeable jump in 'Market Demand' in NSW
A curious case of some ‘rogue’ sky-high P5 price forecasts for NSW on Thursday 20th February 2025
A short (and perhaps cryptic, or perhaps useful) initial look at some (what might appear to some) 'rogue' price forecasts in P5 predispatch for the NSW region on...
AER published ‘Semi-Scheduled Generator Compliance Bulletin’ on Tuesday 4th February 2025
Two weeks after the AER published its updated Compliance Bulletin (and Compliance Checklist) for Semi-Scheduled units, we've finally found time to note about it.
NEMDE nightmares – parallel pathways and clashing constraints
Prompted by a question by a client in a training session for a new ez2view user, guest author Allan O'Neil has written 2,940 words to explain the price...
Guest Authored Posts
An initial look at Winners and Losers from Frequency Performance Payments (FPP)
In his first guest authored article on WattClarity, Jack Fox reports some initial observations from a review of the Non Financial Obligation (NFO) data that's been published since
Hot chips, algorithms and electricity markets
Declan Kelly thinks through and discusses competition issues that could arise from the increasing proliferation of auto-bidding software by big batteries in the NEM - and suggests some...
Detailed Analysis
Need for speed: How long has each battery project in the NEM taken to deliver?
Elon Musk's '100 days or it's free' offer was made almost exactly 7 years ago - how much longer or shorter have battery development delivery times changed since...
State-of-charge: a peek into the economics and performances within the NEM’s battery fleet
A review of battery storage market performance in the NEM throughout 2023, a year in which where we saw the battery fleet double in size.
A quick first pass through ENERGY bids (for Victorian units) on Tuesday 13th Feb 2024
Five days after Tuesday 13th February 2024 we have a bit of time to take this initial (top-down) look at bidding for ENERGY in the Victorian region on...
The Generator Statistical Digest 2023 (GSD2023) is released
It's Thursday 15th February 2024 and (in amongst the detailed analysis relating to Tue 13th Feb 2024 in Victoria) we're releasing the GSD2023 ... the Generator Statistical Digest...
Some *initial* headline questions following the transmission damage, unit trips & loss of load, initiated on Tuesday 13th February 2024
What happened yesterday (Tue 13th Feb 2024) in Victoria was a significant event in the history of the NEM - and the flow on effects will be felt...
GSD 2023 Uncovers Features in FCAS Enablement and Bidding
The release of GSD2023 supports a deep dive into its 10-year FCAS history section. We inspect three units of differing technology and make use of the data extract...
Putting Monday’s record-breaking demand in QLD into context (22nd Jan 2024)
Still trying to make sense of what did and didn't happen in QLD last night, Dan Lee provides some context to how yesterday's record-breaking demand compares to similar...
The early wind farms reaching 20 years: how are they performing?
With Challicum Hills Wind Farm recently celebrating its 20th anniversary, Dan Lee takes a look into the long-term trend of technical and commercial performance of the oldest wind...