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Market analysis of 21 September 2024

Regional demand in New South Wales peaked at 8,058.68 MW at 18:40 on 21 September 2024. The day’s lowest observation was 3,307.13 MW at 12:30, so demand moved by 4,751.55 MW from trough to peak.

At the demand peak the wholesale price was AUD 112.10/MWh. The day’s highest price, AUD 130.00/MWh, came at 18:25, and the daily price average was AUD 31.86/MWh.

The Demand Profile Through The Day

The first chart traces five-minute demand and dispatchable generation in New South Wales, in fixed UTC+10. The gap between the two lines reflects the region’s net interchange with its neighbours across the day.

New South Wales Demand And Generation — 21 September 2024; 2024-09-21 | Five-Minute Observations | UTC+10
Regional demand and dispatchable generation in New South Wales on 2024-09-21. Source: Network Map; MW, fixed UTC+10.

How The Five Regions Compared

The second chart compares each region’s peak demand for 21 September 2024. New South Wales’s peak of 8,059 MW compares with Queensland 7,164 MW, Victoria 5,748 MW, South Australia 1,825 MW, Tasmania 1,331 MW.

Peak Demand By Region On 21 September — 21 September 2024; 2024-09-21 | Highest Five-Minute Demand | MW
Peak regional demand by region on 2024-09-21. Source: Network Map; MW.

What The Day Means For Operations

For a battery operator, the question is where charging and discharging belonged within this curve. For a generator or retailer, the same timestamps show which intervals carried the most value or cost. Reviewing the day interval by interval keeps these signals visible where a daily average would hide them.

This analysis uses Network Map’s regional observations dated 21 September 2024. Prices are in Australian dollars per megawatt-hour, times use fixed UTC+10, and daily averages give equal weight to each five-minute observation.

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