Event Database

Market Event History

Searchable database of Australian energy market events: price spikes, negative pricing, record renewable generation and major grid constraints. Each event is enriched with AI-generated causal analysis.

●This week's events

Total Events

569

This Month

141

Most Active Region

TAS

high_renewableTASminor21 July 2026, 06:25 am

High renewable penetration in TAS1: 88.6%

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Price SpikeWAmajor21 July 2026, 04:10 am

WEM price spike in WA: $309/MWh across 1 trading interval

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Price SpikeWAmoderate20 July 2026, 07:30 pm

WEM price spike in WA: $257/MWh across 1 trading interval

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high_renewableTASminor20 July 2026, 06:30 am

High renewable penetration in TAS1: 91.6%

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Negative PriceQLDminor19 July 2026, 10:40 am

Sustained negative pricing in QLD1: $-3/MWh for 2 intervals

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high_renewableTASminor19 July 2026, 06:30 am

High renewable penetration in TAS1: 90.4%

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high_renewableSAminor19 July 2026, 05:00 am

High renewable penetration in SA1: 85.0%

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Constraint EventNSWmajor18 July 2026, 06:40 pm

High-value binding constraint in NSW1: N_QPSFB_L_9INV ($812000 shadow price)

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Constraint EventTASmajor18 July 2026, 02:05 pm

High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price)

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Negative PriceQLDminor18 July 2026, 10:15 am

Sustained negative pricing in QLD1: $-3/MWh for 2 intervals

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high_renewableTASminor18 July 2026, 06:30 am

High renewable penetration in TAS1: 85.6%

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Price SpikeWAmoderate17 July 2026, 02:10 pm

WEM price spike in WA: $253/MWh across 1 trading interval

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high_renewableTASminor17 July 2026, 06:30 am

High renewable penetration in TAS1: 87.2%

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Negative PriceQLDminor16 July 2026, 03:10 pm

Sustained negative pricing in QLD1: $-2/MWh for 2 intervals

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Negative PriceQLDminor16 July 2026, 09:20 am

Sustained negative pricing in QLD1: $-4/MWh for 2 intervals

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high_renewableTASminor16 July 2026, 06:30 am

High renewable penetration in TAS1: 87.2%

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high_renewableTASminor15 July 2026, 06:30 am

High renewable penetration in TAS1: 91.8%

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Negative PriceVICminor14 July 2026, 03:00 pm

Sustained negative pricing in VIC1: $-13/MWh for 2 intervals

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Negative PriceTASminor14 July 2026, 01:15 pm

Sustained negative pricing in TAS1: $-1/MWh for 2 intervals

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Negative PriceNSWminor14 July 2026, 01:15 pm

Sustained negative pricing in NSW1: $-1/MWh for 2 intervals

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Negative PriceQLDminor14 July 2026, 01:15 pm

Sustained negative pricing in QLD1: $-1/MWh for 2 intervals

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Constraint EventTASmajor14 July 2026, 11:55 am

High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price)

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Negative PriceSAminor14 July 2026, 11:50 am

Sustained negative pricing in SA1: $-1/MWh for 2 intervals

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Negative PriceVICminor14 July 2026, 09:10 am

Sustained negative pricing in VIC1: $-1/MWh for 2 intervals

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high_renewableTASminor14 July 2026, 06:30 am

High renewable penetration in TAS1: 91.7%

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Negative PriceSAminor14 July 2026, 04:45 am

Sustained negative pricing in SA1: $-5/MWh for 2 intervals

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Negative PriceTASminor14 July 2026, 04:45 am

Sustained negative pricing in TAS1: $-4/MWh for 2 intervals

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Negative PriceVICminor14 July 2026, 01:40 am

Sustained negative pricing in VIC1: $-1/MWh for 2 intervals

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high_renewableSAminor14 July 2026, 12:30 am

High renewable penetration in SA1: 97.1%

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Negative PriceTASminor13 July 2026, 10:55 pm

Sustained negative pricing in TAS1: $-0/MWh for 2 intervals

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Showing 30 of 569

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Recent Market Events

High renewable penetration in TAS1: 88.6%, TAS1, high_renewable, minor
Tasmania experienced high renewable penetration of 88.6% on 20 July 2026 at 20:00–20:30 UTC, with hydroelectric generation dominating at approximately 1,200–1,250 MW and supplementary wind output. Regional spot prices ranged between AUD 91–99.64/MWh across the five-minute settlement intervals, showing modest volatility in an otherwise stable evening period.
WEM price spike in WA: $309/MWh across 1 trading interval, WA1, price_spike, major
WA1 experienced a major price spike to $308.95/MWh during the 18:10 interval on 20 July 2026, representing a 30% increase from the previous interval. Prices had been escalating across the preceding five intervals, rising from $171.45/MWh at 17:45, indicating progressively tightening market conditions.
WEM price spike in WA: $257/MWh across 1 trading interval, WA1, price_spike, moderate
The WEM experienced a moderate price spike in WA1, reaching $257.34/MWh at 09:30 on 20 July 2026, representing a $7.74/MWh increase from the previous interval. Prices had been escalating over the preceding 25 minutes, rising from $166.67/MWh to near $250/MWh before the spike.
High renewable penetration in TAS1: 91.6%, TAS1, high_renewable, minor
Tasmania experienced high renewable penetration of 91.6% on 19 July 2026 during the evening peak, driven primarily by combined hydro generation of approximately 3,317 MW alongside wind contribution of 642 MW. Regional electricity prices rose steadily over the five-minute interval from $55.55/MWh to $69.48/MWh despite the high renewable output.
Sustained negative pricing in QLD1: $-3/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing reaching −$2.50/MWh across 2 intervals during the early morning of 19 July 2026. The region generated over 5,200 MW from solar and wind sources concurrent with 3,200 MW of black coal generation, creating oversupply conditions during low-demand periods.
High renewable penetration in TAS1: 90.4%, TAS1, high_renewable, minor
Tasmania (TAS1) experienced high renewable penetration of 90.4% during the evening period of 18 July 2026, with hydroelectric generation dominating the mix at approximately 1,063 MW average and wind contributing around 99 MW. Regional reference prices remained relatively stable in the AUD $48–55/MWh range across the seven five-minute intervals, with a minor spike to $54.58/MWh at 20:15 UTC.
High renewable penetration in SA1: 85.0%, SA1, high_renewable, minor
South Australia (SA1) experienced high renewable penetration of 85.0% during the evening of 18 July 2026, driven predominantly by wind generation of 1,083 MW. Regional reference prices remained moderate, ranging from $54.02–$60.45/MWh across the six consecutive five-minute settlement periods.
High-value binding constraint in NSW1: N_QPSFB_L_9INV ($812000 shadow price), NSW1, constraint_event, major
A major binding constraint (N_QPSFB_L_9INV) with an exceptionally high shadow price of $812,000/MWh was active in NSW1 on 18 July 2026 during the 08:15–08:40 settlement period, whilst the regional reference price remained stable around $90.49/MWh. The constraint significantly exceeded the marginal value of other active constraints by several orders of magnitude, indicating severe congestion or operational limitation in the constrained element.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
A severe binding constraint (T_BLINK_TV_NGZ) in Tasmania during the early morning of 18 July 2026 produced an exceptionally high shadow price of $8.35 million, indicating significant transmission or operational limitation preventing further dispatch. The constraint binding occurred during a period of moderate demand with hydroelectric generation contributing approximately 990 MW and prices fluctuating between $30–$58/MWh across the affected settlement periods.
Sustained negative pricing in QLD1: $-3/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing with a minimum of -$2.5/MWh occurring across 2 intervals on 18 July 2026 around 00:15–00:20. The event occurred during a period of high solar and wind generation (approximately 5,906 MW combined) coupled with substantial coal-fired output (3,268 MW), creating an oversupply condition in the region.
High renewable penetration in TAS1: 85.6%, TAS1, high_renewable, minor
Tasmania achieved high renewable penetration of 85.6% during the evening settlement period of 17 July 2026, with hydro and wind generation totalling approximately 1,235–1,514 MW across the recorded intervals. Prices rose steadily from $90.96/MWh to $99.73/MWh during this period, reflecting tightening supply conditions despite the high renewable output.
WEM price spike in WA: $253/MWh across 1 trading interval, WA1, price_spike, moderate
The WEM in WA1 experienced a moderate price spike to $252.50/MWh during the 04:10 trading interval on 17 July 2026, representing a sharp 10% increase from the previous interval. Prices had been climbing steadily from $161.75/MWh at 03:45, with the most dramatic jump occurring between 03:55 and 04:00 when prices rose to $229.29/MWh, where they remained elevated for the remainder of the observed period.
High renewable penetration in TAS1: 87.2%, TAS1, high_renewable, minor
TAS1 experienced high renewable penetration of 87.2% during the 20:05–20:30 period on 16 July 2026, with hydro and wind generation totalling approximately 1,600–1,800 MW across six dispatch intervals. Regional reference price (RRP) increased steadily from $88.22/MWh to $105.33/MWh over the same period, suggesting tightening market conditions despite abundant renewable supply.
Sustained negative pricing in QLD1: $-2/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing across two intervals on 16 July 2026, with the minimum price reaching −$1.92/MWh at 05:10. The event occurred during the early morning period with high solar generation (3,491.6 MW combined) and substantial coal-fired output (4,719.74 MW), creating structural oversupply conditions.
Sustained negative pricing in QLD1: $-4/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing with a minimum of -$3.5/MWh across 2 intervals during the evening of 15 July 2026. Prices declined from $6.81/MWh to -$3.5/MWh over a seven-interval period, indicating a shift towards oversupply conditions.
High renewable penetration in TAS1: 87.2%, TAS1, high_renewable, minor
Tasmania (TAS1) experienced high renewable penetration of 87.2% during the evening of 15 July 2026, driven by substantial hydro generation (1,185–1,262 MW) and wind output (149–158 MW) alongside gas OCGT capacity. Regional spot prices rose sharply from $21.16/MWh to $107.78/MWh over the 35-minute observation window, despite the high renewable contribution.
High renewable penetration in TAS1: 91.8%, TAS1, high_renewable, minor
Tasmania experienced high renewable penetration at 91.8% during the evening of 14 July 2026, with hydro and wind generation combining to supply approximately 4,031 MW across six settlement periods. Regional reference prices (RRP) ranged from $67.52 to $78.25/MWh during this period, with modest volatility despite the elevated renewable contribution.
Sustained negative pricing in VIC1: $-13/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing during early morning hours on 14 July 2026, with the region reaching −$12.75/MWh across two intervals. The negative pricing persisted across a six-interval window from 04:35 to 05:05, indicating a period of structural oversupply in the Victorian market.
Sustained negative pricing in TAS1: $-1/MWh for 2 intervals, TAS1, negative_price, minor
TAS1 experienced sustained negative pricing with two intervals settling at approximately -$0.79/MWh and -$0.47/MWh during the early morning period of 14 July 2026. This followed a sharp price spike to $87.24/MWh in the preceding interval, creating volatile pricing conditions.
Sustained negative pricing in NSW1: $-1/MWh for 2 intervals, NSW1, negative_price, minor
NSW1 experienced sustained negative pricing over two consecutive intervals (03:15 and 03:20 on 14 July 2026), with prices reaching −$1.26/MWh. The negative prices followed a sharp price decline from $10.94/MWh to $0.01/MWh across four intervals, suggesting a rapid shift in supply–demand balance during early morning hours.
Sustained negative pricing in QLD1: $-1/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing at $-1.18/MWh during two consecutive intervals (03:15–03:20 on 14 July 2026), following a sharp price decline from $10.08/MWh earlier in the period. The region's generation mix was dominated by solar (approximately 2,443 MW) and black coal (3,271 MW), with minimal demand flexibility from flexible generation sources.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
Tasmania experienced a major constraint binding event with marginal value of $8.352 million on constraint T_BLINK_TV_NGZ during the early morning period of 14 July 2026. Regional energy prices escalated from $0.16/MWh to a peak of $3.97/MWh across the five-minute settlement intervals, indicating significant scarcity pricing driven by the binding constraint.
Sustained negative pricing in SA1: $-1/MWh for 2 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing at −$1/MWh for one interval (01:50) with an adjacent interval at −$0.02/MWh, representing minor but notable price suppression. The region's generation mix was dominated by renewable output, particularly wind generation at 784 MW and solar at 208 MW, with minimal gas-fired generation.
Sustained negative pricing in VIC1: $-1/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing at −$1.10/MWh for two consecutive 5-minute intervals (23:10–23:15 on 13 July 2026), representing a minor severity event. Prices had declined sharply from $22.67/MWh earlier in the evening, settling into negative territory during the late evening period.
High renewable penetration in TAS1: 91.7%, TAS1, high_renewable, minor
Tasmania experienced high renewable penetration of 91.7% during the evening period of 13 July 2026, driven by combined hydro and wind generation totalling approximately 1,376–1,846 MW. Regional reference prices remained at or near the market floor of $0.09/MWh for four consecutive intervals before rising marginally to $0.12/MWh, reflecting abundant renewable supply.
Sustained negative pricing in SA1: $-5/MWh for 2 intervals, SA1, negative_price, minor
South Australia (SA1) experienced sustained negative pricing reaching -$4.78/MWh across 2 intervals during the 18:40–18:45 settlement period on 13 July 2026. Prices had been slightly negative in the preceding intervals (-$1.07 to -$1.10/MWh) before deepening sharply. The generation mix was dominated by wind output at 1,490.75 MW with minimal demand absorption from batteries, contributing to surplus supply conditions.
Sustained negative pricing in TAS1: $-4/MWh for 2 intervals, TAS1, negative_price, minor
TAS1 experienced sustained negative pricing at $-4.06/MWh across two consecutive intervals (18:40 and 18:45) on 13 July 2026, representing a minor severity event. Prices recovered slightly to $-4.04/MWh in the following interval before the negative pricing episode concluded.
Sustained negative pricing in VIC1: $-1/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing at −$1.10/MWh across two consecutive intervals (15:15 and 15:20 on 13 July 2026), with prices remaining negative or near-zero throughout the broader period. The negative pricing occurred during a period of high wind generation (approximately 6,356 MW combined) and brown coal output (3,313 MW), indicating structural oversupply in the region.
High renewable penetration in SA1: 97.1%, SA1, high_renewable, minor
South Australia (SA1) experienced high renewable penetration of 97.1% during the 14:05–14:30 period on 13 July 2026, driven predominantly by wind generation of 1,437.57 MW. Negative spot prices of approximately −$1.11/MWh were recorded across multiple settlement periods, indicating oversupply conditions typical of high renewable generation intervals.
Sustained negative pricing in TAS1: $-0/MWh for 2 intervals, TAS1, negative_price, minor
TAS1 experienced brief negative pricing for 2 consecutive intervals (12:55–13:00 on 13 July 2026), with prices reaching −$0.25/MWh. The event occurred during a period of high renewable generation (hydro and wind combined exceeded 2,000 MW) with minimal conventional capacity online.