New South Wales: Negative-price interval share
referenceA prior comparable value is not available.
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NEM and SWIS operating conditions in one fixed release, with every metric kept on its native market, unit and measurement basis.
Edition read
53 publishable metric rows across 2 Australian grid systems, with measurement bases retained for every value.
Reading boundary
The NEM chart uses five-minute regional price spreads. SWIS is excluded because this edition does not yet carry a directly comparable WEM price series.
| Market | Metric | Edition value | Change | Evidence | Vintage |
|---|---|---|---|---|---|
| New South WalesNSW1 | Annual production carbon intensity National annual production-based electricity carbon intensity, 2025 | 525 gCO2/kWh | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| New South WalesNSW1 | Annual renewable share National annual electricity generation share, 2025 | 38.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| New South WalesNSW1 | Annual solar share National annual electricity generation share, 2025 | 19.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| New South WalesNSW1 | Annual variable renewable share National annual electricity generation share, 2025 | 33.3 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| New South WalesNSW1 | Average demand AEMO regional daily mean operational demand | 8,621 MW | Not available | observedHigh | AEMO-NEM-2026-07-31 |
| New South WalesNSW1 | Evening ramp Midday minimum to evening maximum demand | 3,918 MW | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| New South WalesNSW1 | Negative-price interval share Share of NEM five-minute regional price intervals below zero | 8.33 % | Not available | derivedMedium | AEMO-NEM-2026-05-31 |
| New South WalesNSW1 | Average spot price NEM five-minute regional reference price, daily mean | 83.2 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| New South WalesNSW1 | Daily price spread NEM five-minute regional daily maximum less minimum | 154 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| QueenslandQLD1 | Annual production carbon intensity National annual production-based electricity carbon intensity, 2025 | 525 gCO2/kWh | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| QueenslandQLD1 | Annual renewable share National annual electricity generation share, 2025 | 38.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| QueenslandQLD1 | Annual solar share National annual electricity generation share, 2025 | 19.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| QueenslandQLD1 | Annual variable renewable share National annual electricity generation share, 2025 | 33.3 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| QueenslandQLD1 | Average demand AEMO regional daily mean operational demand | 6,048 MW | Not available | observedHigh | AEMO-NEM-2026-07-31 |
| QueenslandQLD1 | Evening ramp Midday minimum to evening maximum demand | 3,343 MW | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| QueenslandQLD1 | Negative-price interval share Share of NEM five-minute regional price intervals below zero | 8.33 % | -57.1% / prior observation | derivedMedium | AEMO-NEM-2026-05-31 |
| QueenslandQLD1 | Average spot price NEM five-minute regional reference price, daily mean | 66 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| QueenslandQLD1 | Daily price spread NEM five-minute regional daily maximum less minimum | 134 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| South AustraliaSA1 | Annual production carbon intensity National annual production-based electricity carbon intensity, 2025 | 525 gCO2/kWh | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| South AustraliaSA1 | Annual renewable share National annual electricity generation share, 2025 | 38.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| South AustraliaSA1 | Annual solar share National annual electricity generation share, 2025 | 19.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| South AustraliaSA1 | Annual variable renewable share National annual electricity generation share, 2025 | 33.3 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| South AustraliaSA1 | Average demand AEMO regional daily mean operational demand | 1,554 MW | Not available | observedHigh | AEMO-NEM-2026-07-31 |
| South AustraliaSA1 | Evening ramp Midday minimum to evening maximum demand | 1,120 MW | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| South AustraliaSA1 | Negative-price interval share Share of NEM five-minute regional price intervals below zero | 23.3 % | 378.6% / prior observation | derivedMedium | AEMO-NEM-2026-05-31 |
| South AustraliaSA1 | Average spot price NEM five-minute regional reference price, daily mean | 103 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| South AustraliaSA1 | Daily price spread NEM five-minute regional daily maximum less minimum | 1,046 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| TasmaniaTAS1 | Annual production carbon intensity National annual production-based electricity carbon intensity, 2025 | 525 gCO2/kWh | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| TasmaniaTAS1 | Annual renewable share National annual electricity generation share, 2025 | 38.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| TasmaniaTAS1 | Annual solar share National annual electricity generation share, 2025 | 19.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| TasmaniaTAS1 | Annual variable renewable share National annual electricity generation share, 2025 | 33.3 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| TasmaniaTAS1 | Average demand AEMO regional daily mean operational demand | 1,187 MW | Not available | observedHigh | AEMO-NEM-2026-07-31 |
| TasmaniaTAS1 | Evening ramp Midday minimum to evening maximum demand | 310 MW | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| TasmaniaTAS1 | Negative-price interval share Share of NEM five-minute regional price intervals below zero | 0 % | Not available | derivedMedium | AEMO-NEM-2026-05-31 |
| TasmaniaTAS1 | Average spot price NEM five-minute regional reference price, daily mean | 76 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| TasmaniaTAS1 | Daily price spread NEM five-minute regional daily maximum less minimum | 1,703 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| VictoriaVIC1 | Annual production carbon intensity National annual production-based electricity carbon intensity, 2025 | 525 gCO2/kWh | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| VictoriaVIC1 | Annual renewable share National annual electricity generation share, 2025 | 38.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| VictoriaVIC1 | Annual solar share National annual electricity generation share, 2025 | 19.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| VictoriaVIC1 | Annual variable renewable share National annual electricity generation share, 2025 | 33.3 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| VictoriaVIC1 | Average demand AEMO regional daily mean operational demand | 6,440 MW | Not available | observedHigh | AEMO-NEM-2026-07-31 |
| VictoriaVIC1 | Evening ramp Midday minimum to evening maximum demand | 2,608 MW | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| VictoriaVIC1 | Negative-price interval share Share of NEM five-minute regional price intervals below zero | 26.4 % | 660.0% / prior observation | derivedMedium | AEMO-NEM-2026-05-31 |
| VictoriaVIC1 | Average spot price NEM five-minute regional reference price, daily mean | 77.4 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| VictoriaVIC1 | Daily price spread NEM five-minute regional daily maximum less minimum | 963 AUD/MWh | Not available | derivedMedium | AEMO-NEM-2026-07-31 |
| Market | Metric | Edition value | Change | Evidence | Vintage |
|---|---|---|---|---|---|
| South West Interconnected SystemSWIS | Annual production carbon intensity National annual production-based electricity carbon intensity, 2025 | 525 gCO2/kWh | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| South West Interconnected SystemSWIS | Annual renewable share National annual electricity generation share, 2025 | 38.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| South West Interconnected SystemSWIS | Annual solar share National annual electricity generation share, 2025 | 19.6 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| South West Interconnected SystemSWIS | Annual variable renewable share National annual electricity generation share, 2025 | 33.3 % | Not available | contextHigh | OWID Energy Dataset 2025 annual series |
| South West Interconnected SystemSWIS | Minimum operational demand AEMO SWIS daily minimum operational demand | 1,803 MW | -6.3% / prior 30 days | observedHigh | AEMO-WEM-2026-07-30 |
| South West Interconnected SystemSWIS | Evening ramp Daily minimum to evening operational-demand maximum | 1,309 MW | 0.8% / prior 30 days | derivedMedium | AEMO-WEM-2026-07-30 |
| South West Interconnected SystemSWIS | Estimated rooftop solar peak AEMO estimated distributed PV daily maximum | 1,447 MW | 11.6% / prior 30 days | observedHigh | AEMO-WEM-2026-07-30 |
| South West Interconnected SystemSWIS | Rooftop solar share at peak Estimated DPV divided by underlying-demand proxy at DPV peak | 41.6 % | 14.6% / prior 30 days | derivedMedium | AEMO-WEM-2026-07-30 |
Change ledger
A prior comparable value is not available.
57.1% lower on the retained basis.
378.6% higher on the retained basis.
A prior comparable value is not available.
660.1% higher on the retained basis.
6.3% lower on the retained basis.
0.8% higher on the retained basis.
11.6% higher on the retained basis.
14.6% higher on the retained basis.
Machine-readable edition
Metric key, unit and comparison basis must all match. National annual context remains labelled as context and is not relabelled as regional real-time data. A missing value remains null and is never converted to zero.