SWIS set a new minimum-demand record

Operational demand fell to 649 MW, below the previous low of 692 MW in this record.

Market

SWIS

Observed

15 September 2024

Triggered value

649 MW

Severity

notable

Executive read

What changed

Measurement. Minimum operational demand reached 649 MW against a 692 MW reference.

Decision implication. Lower registered demand increases the need to manage system strength, essential generation and the midday-to-evening transition on an isolated grid.

Evidence boundary. The event is a deterministic threshold or record comparison. It identifies a measurement that warrants investigation; it does not assign causality or quantify commercial exposure.

Operating context

Prior-window average

1,300 MW

Event observation

649 MW

Post-event average

948 MW

Event-day energy mix

Wind39.4% · 15,506 MWh

Gas29.1% · 11,474 MWh

Coal27.0% · 10,633 MWh

Other scheduled generation3.5% · 1,378 MWh

Utility solar1.0% · 406 MWh

Questions for the decision

What operating or market conditions coincided with this observation?
Was the value repeated, reversed or exceeded in the following days?
Which flexible resources, constraints or settlement exposures matter for the decision at hand?

Source trail

The measurement and context series are retained from the named primary operator or source release. Calculated shares and comparisons preserve the source boundary stated in the underlying Solar Analytica record.

https://data.wa.aemo.com.au/public/market-data/wemde/operationalDemandWithdrawal/dailyFiles/OperationalDemandAndWithdrawal_2024-09-15.json

Related precedents

2024-11-10SWIS set a new minimum-demand record504 MW

2024-11-03SWIS set a new minimum-demand record604 MW