Inertia is an important concept to understand as the technology mix in the NEM evolves during the energy transition. In this article, Jonathon Dyson talks about the importance of inertia and highlights an example of a specific incident where we observed relatively low levels of inertia in the NEM.Read More
Summer 2022-23 in the NEM
A collection of articles discussing events that occur (or are forecast to occur) through summer 2022-23 in the NEM
Another short article today (also from GenInsights Quarterly Update for Q1 2023) presenting an overview of Aggregate Raw Off-Target (AggROT) for Semi-Scheduled units on Friday 20th January 2023.
Following recent online discussions, Bruce Miller has produced this in-depth analysis of frequency behavior in th NEM.
On Thursday 23rd February, hot weather in SA drove ‘Market Demand’ to its highest level in just over 9 years, and delivered a bit of spot price volatility. We investigate….
A quick post about some evening volatility in VIC and SA
A quick look at how Market Demand peaked on a hot Sunday afternoon/evening in QLD.
Estimated RERT costs published, pushing past the market price cap for dispatched volumes.
Prices have subsided somewhat at the time of publication, but here’s a record of some volatility earlier this evening in South Australia.
Dan Lee tracks the demand forecasts against the actual outcome in QLD last Friday afternoon. The final result was as much as ∼1,000MW lower than the maximum forecast of demand published by the AEMO, which alludes to the inherent difficulty of electricity market forecasting.
The forecast for Friday (3 February 2023) evening’s demand was that a new all-time maximum would occur and a lack of reserve was expected. To maintain the grid in a reliable operating state AEMO signaled to the market that the…
(Not even) close … but no cigar. Actual level of Market Demand in QLD for 17:30 is about 10% below what the most extreme forecast thought it might be.
Today (Fri 3rd February 2023) is an illustration of the inherent difficulties in ‘successfully’ forecasting electricity demand!
Second price spike in QLD today above $1,000/MWh … with more to continue?
With demand beginning to rise sharply output at Queensland’s four wind farms has been muted so far this afternoon.
The rain and cloud cover is delivering (amongst other things) a faster-than-expected drop in aggregate solar production in QLD.
The RERT has been dispatched for 5:30PM this afternoon in Queensland
QLD may be down 200MW of available generation with record demand currently being forecast for late this afternoon.
Another article today presenting 12 hours of history of System Frequency (to ~14:00 on Friday 3rd February 2023) with a few questions added. Comments welcome!
An AEMO market notice from yesterday afternoon declares that an extra 50MW has been made available on the QNI interconnector.
AEMO starts the Reserve Trader process for the QLD region this evening (Fri 3rd Feb 2023).