Rooftop PV reached a new SWIS share high

Estimated rooftop PV reached 75.8% of the underlying-demand proxy at its daily peak, above the previous 74.3% high.

Market

SWIS

Observed

15 September 2024

Triggered value

75.8 %

Severity

extreme

Executive read

What changed

Measurement. Rooftop PV share at peak reached 75.8 % against a 74.3 % reference.

Decision implication. A rising behind-the-meter share shifts the operational minimum away from the underlying load and sharpens the need for flexible demand, storage and fast evening response.

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

53.4 %

Event observation

75.8 %

Post-event average

67.5 %

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/datafiles/estimated-dpv-csv/distributed-pv-new-2024.csv

Related precedents

2024-11-10Rooftop PV reached a new SWIS share high80.8 %

2024-11-03Rooftop PV reached a new SWIS share high76.7 %

2024-10-26Rooftop PV reached a new SWIS share high75.9 %

2024-09-14Rooftop PV reached a new SWIS share high74.3 %