All Posts

IRPM drops below 15% on Tuesday 23rd May 2023

Tue 23^rd May 2023 6:46 PM | Paul McArdle

A short article this evening noting IRPM has dropped below 15% on a NEM-wide basis (a tight supply-demand balance).

AEMO’s MMS 5.2, ez2view v9.7, Semi-Scheduled MaxAvail in the Bid, and a self-forecasting example

Tue 23^rd May 2023 1:01 PM | Paul McArdle

Today (Tue 23rd May) is the go-live date for AEMO's EMMS v5.2 - which will contain new data for some market enhancements. Here's a quick look at where...

Evening volatility in QLD and NSW on Saturday 20th May 2023

Sat 20^th May 2023 5:35 PM | Paul McArdle

A short article to mark an evening burst of volatility in QLD and NSW, with VIC1-NSW1 again constrained.

Brief burst of volatility in QLD and NSW on Wednesday 17th May 2023

Wed 17^th May 2023 6:25 PM | Paul McArdle

A short article to record evening price volatility in NSW and QLD on Wednesday 17th May 2023

Too Early to Say?

Mon 15^th May 2023 4:17 PM | Allan O'Neil

Guest author, Allan O'Neil, publishes some analysis for WattClarity on price and generation mix changes apparent in the NEM coincident with (but not wholly caused by) the closure...

We’re not building enough replacement dispatchable capacity

Sun 14^th May 2023 5:45 PM | Paul McArdle

With completion of GenInsights Quarterly Update for Q1 2023 approaching, and following some conversations recently (and probably this week at EUAA Conference) here are two charts looking backwards...

How dispatch works … it’s much more than just a bid stack

Thu 11^th May 2023 2:35 PM | Ryan Esplin

New guest author, Ryan Esplin progressively builds a more precise model of the NEMDE dispatch process to illustrate why the stylised 'Merit Order' bid stack model is increasingly...

NEMwide IRPM drops below 15% (at 17:55) on Wednesday 10th May 2023

Wed 10^th May 2023 6:20 PM | Paul McArdle

The IRPM has dropped below 15% across the NEM on Wednesday 10th May 2023 ... first time this has happened since the stressful winter 2022.

Renewable curtailment – forced and not quite so forced

Tue 9^th May 2023 2:20 PM | Allan O'Neil

Inspired by the recent article by Tristan Edis (who referenced the GSD2022 in analysis of curtailment of some wind and solar farms), Allan O'Neil follows on with more...

Currently forecast LOR2 for South Australia for Wednesday 10th May 2023

Mon 8^th May 2023 1:58 PM | Paul McArdle

A first look at a forecast for tight supply-demand conditions for South Australia on Wednesday 10th May 2023.

Liddell’s ghost stalks the market

Fri 5^th May 2023 9:38 AM | Allan O'Neil

During early morning Monday 1st May prices spiked in the NSW quite unexpectedly. Guest author Allan O'Neil takes us into the complexities of the EMMS and NEMDE to...

AEMC publishes Rule Determination for amending the (earlier published) IESS Rule

Thu 4^th May 2023 6:00 PM | Paul McArdle

A short, belated (and back-dated) article about the change to the original IESS Rule.

A spike at 16:15 hints at volatility to resume in SA with the sun setting, on Thursday 4th May 2023

Thu 4^th May 2023 4:55 PM | Paul McArdle

A second article today about volatility in South Australia

AEMO preliminary report on VIC region suspension (loss of SCADA) on 22nd April

Thu 4^th May 2023 2:54 PM | Paul McArdle

Here's where to find AEMO's preliminary report on the loss of SCADA on 22nd April 2023 in Victoria that led to that region being suspended for more than...

Morning volatility in South Australia on Thursday 4th May 2023

Thu 4^th May 2023 7:38 AM | Paul McArdle

The South Australian price has been bouncing up above $10,000/MWh on Thursday 4th May 2023

A second (still rushed) look at volatility in NSW very early on Monday 1st May 2023 … a possible snag with Liddell retirement from market data systems?

Tue 2^nd May 2023 7:22 PM | Paul McArdle

Taking a second look at the very early morning volatility in the NSW region on Monday 1st May 2023, we've used the 'Constraint Dashboard' widget in ez2view to...