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2.1 average negative-price hours per day and a 0.7x evening-ramp ratio create the operational signal; the Australian national transition and pipeline supply the deployment context.
This is a relative evidence screen, not a forecast, valuation or investment recommendation. Scores identify questions worth deeper local diligence.
Score construction
Negative-price duration
AEMO NEMWeb
Average daily five-minute intervals below zero in the retained operating window. Source
Evening ramp / minimum demand
AEMO NEMWeb
Average evening ramp divided by the daily minimum demand. Source
Intraday price spread
AEMO NEMWeb
Average daily maximum minus minimum five-minute regional price. Source
| Measure | Value | Window | Source |
|---|---|---|---|
| Negative pricing | 2.1 h/day | 120 operating days | AEMO NEMWeb |
| Evening ramp ratio | 0.7x | 120 operating days | AEMO NEMWeb |
| Average price spread | 135 AUD/MWh | 120 operating days | AEMO NEMWeb |
| Solar generation share | 19.7% | 2025 | Ember Electricity Data |
| Variable renewable share | 33.4% | 2025 | Ember Electricity Data |
| Solar-share change | 1.9 pp/year |
Detected grid events
Solar Analytica event ledger
Recent deterministic price and operating events for this region. Source
Australian solar momentum
Ember and Global Energy Monitor
National deployment context inherited by the NEM region. Source
Negative-price duration
AEMO NEMWeb
Average daily five-minute intervals below zero in the retained operating window. Source
Evening ramp / minimum demand
AEMO NEMWeb
Average evening ramp divided by the daily minimum demand. Source
Negative-price duration
AEMO NEMWeb
Average daily five-minute intervals below zero in the retained operating window. Source
Evening ramp / minimum demand
AEMO NEMWeb
Average evening ramp divided by the daily minimum demand. Source
Intraday price spread
AEMO NEMWeb
Average daily maximum minus minimum five-minute regional price. Source
| 2016-2025 |
| Ember Electricity Data |