Market analysis of 18 May 2025
Queensland recorded a wholesale electricity price high of AUD 1,000.00/MWh at 17:10 on 18 May 2025 and a low of −AUD 18.25/MWh at 10:20. The arithmetic average across its 288 five-minute observations was AUD 81.17/MWh.
Across the day, 37 observations were below zero, a total of 3.1 hours and 10 observations were at or above AUD 300/MWh, a total of 0.8 hours. The spread between the highest and lowest prices was AUD 1,018.25/MWh.
The Five-Minute Price Curve
The first chart shows each five-minute price for Queensland through the day, with times in fixed UTC+10. Timing matters for any operator: a battery or flexible load gains from the gap between the cheapest and dearest intervals, while a generator’s result depends on when its energy was delivered.
How The Five Regions Compared
Daily average prices in the other regions were: New South Wales AUD 152.45/MWh, Tasmania AUD 87.69/MWh, South Australia AUD 55.66/MWh, Victoria AUD 42.25/MWh. The second chart compares the five regional averages for 18 May 2025.
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 18 May 2025. Prices are in Australian dollars per megawatt-hour, times use fixed UTC+10, and daily averages give equal weight to each five-minute observation.
Explore The Data
Markets, Revenue Reconciliation, Battery Revenue Benchmarks.
