Apologies to readers here for what might seen a short (perhaps cryptic and unsatisfying) article that’s intended to augment the discussion in the deeper review of 2024 Q2.
Here’s a trend of calculated NEM-wide IRPM over a 9-day period in June 2024 …
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.
A short note to help readers see what units are currently running on a hot & humid Friday afternoon 19th Jan 2024 in QLD (and to highlight some up-coming changes to ez2view).
The second part of an ongoing case study examining two successive days of low VRE generation in early July 2023. This part examines IRPM, earlier forecasts of available generation and maps the availability by site location.
Some quick reflections on a day that saw spot prices in QLD down below $0/MWh for most of the period seeing strong daylight hours, hence strong injections from rooftop PV systems.
1 Commenton "Trended NEM-wide IRPM over 9 days in June 2024"
Can someone outline how semi-sched and batteries are treated in this calculation please? For very little variation in Market Demand, the IRPM seems to be almost precisely out of phase with maximum generation. Not unsurprising, but if this IRPM is calculated assuming charged batteries and predicted wind then once you get down around 10% you really are only a hiccup away from a problem – particularly in a region unable to be supported via a transmission constrained market. Gets even more precarious if some of your assumed generation is coal that has been decommitted for a few days and is now cold.
Can someone outline how semi-sched and batteries are treated in this calculation please? For very little variation in Market Demand, the IRPM seems to be almost precisely out of phase with maximum generation. Not unsurprising, but if this IRPM is calculated assuming charged batteries and predicted wind then once you get down around 10% you really are only a hiccup away from a problem – particularly in a region unable to be supported via a transmission constrained market. Gets even more precarious if some of your assumed generation is coal that has been decommitted for a few days and is now cold.