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

319

This Month

109

Most Active Region

TAS

Price SpikeWAmajor15 June 2026, 06:25 pm

WEM price spike in WA: $364/MWh across 1 trading interval

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Price SpikeWAmajor15 June 2026, 11:20 am

WEM price spike in WA: $372/MWh across 5 trading intervals

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Constraint EventTASmajor15 June 2026, 07:35 am

High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price)

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high_renewableTASminor15 June 2026, 06:20 am

High renewable penetration in TAS1: 99.3%

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Price SpikeWAmoderate15 June 2026, 05:50 am

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

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Price SpikeWAmajor14 June 2026, 10:10 pm

WEM price spike in WA: $386/MWh across 5 trading intervals

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Price SpikeWAmajor14 June 2026, 04:40 pm

WEM price spike in WA: $362/MWh across 1 trading interval

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Negative PriceSAminor14 June 2026, 03:05 pm

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

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high_renewableSAminor14 June 2026, 09:30 am

High renewable penetration in SA1: 85.5%

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Negative PriceSAminor14 June 2026, 09:15 am

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

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high_renewableTASminor14 June 2026, 06:30 am

High renewable penetration in TAS1: 100.0%

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Constraint EventNEMmajor14 June 2026, 06:05 am

High-value binding constraint in NEM: F_T+NIL_MG_RECL_R6 ($162400 shadow price)

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Constraint EventTASmajor13 June 2026, 11:50 pm

High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price)

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Price SpikeWAmajor13 June 2026, 10:10 pm

WEM price spike in WA: $355/MWh across 1 trading interval

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Negative PriceSAminor13 June 2026, 10:20 am

Sustained negative pricing in SA1: $-0/MWh for 2 intervals

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Negative PriceQLDminor13 June 2026, 09:20 am

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

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Negative PriceVICminor13 June 2026, 07:50 am

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

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high_renewableTASminor13 June 2026, 06:30 am

High renewable penetration in TAS1: 100.0%

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Constraint EventNEMmoderate13 June 2026, 06:15 am

High-value binding constraint in NEM: F_T+NIL_MG_RECL_R6 ($3908 shadow price)

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Negative PriceSAminor13 June 2026, 04:30 am

Sustained negative pricing in SA1: $-3/MWh for 2 intervals

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Negative PriceVICminor13 June 2026, 02:00 am

Sustained negative pricing in VIC1: $-6/MWh for 2 intervals

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Negative PriceTASminor12 June 2026, 11:20 pm

Sustained negative pricing in TAS1: $-15/MWh for 2 intervals

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high_renewableSAminor12 June 2026, 11:00 pm

High renewable penetration in SA1: 96.6%

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Negative PriceSAminor12 June 2026, 10:40 pm

Sustained negative pricing in SA1: $-15/MWh for 2 intervals

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Price SpikeWAmoderate12 June 2026, 08:20 pm

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

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Negative PriceVICminor12 June 2026, 08:10 pm

Sustained negative pricing in VIC1: $-0/MWh for 2 intervals

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Constraint EventNEMmoderate12 June 2026, 06:20 pm

High-value binding constraint in NEM: F_T+NIL_MG_RECL_R6 ($303 shadow price)

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Constraint EventVICmoderate12 June 2026, 05:40 pm

High-value binding constraint in VIC1: V_T_NIL_BL1 ($279 shadow price)

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Negative PriceSAminor12 June 2026, 04:50 pm

Sustained negative pricing in SA1: $-7/MWh for 3 intervals

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Negative PriceVICminor12 June 2026, 02:20 pm

Sustained negative pricing in VIC1: $-7/MWh for 2 intervals

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Showing 30 of 319

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Recent Market Events

WEM price spike in WA: $364/MWh across 1 trading interval, WA1, price_spike, major
The WEM WA1 region experienced a major price spike to $364.36/MWh during the 08:25 trading interval on 15 June 2026, with prices remaining elevated above $372/MWh in the following two intervals. This represented a sharp 107% increase from the previous interval's $175.46/MWh, following a steady price escalation across the prior 25 minutes.
WEM price spike in WA: $372/MWh across 5 trading intervals, WA1, price_spike, major
WEM prices in WA1 spiked sharply to an average of approximately $372/MWh across five consecutive 5-minute trading intervals from 01:10 to 01:40 on 15 June 2026, representing a sustained elevation of roughly 50% above preceding price levels around $241/MWh. The spike occurred during overnight trading hours with a diverse generation mix comprising coal, gas (OCGT and CCGT), wind, battery storage and solar.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price), TAS1, constraint_event, major
A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high marginal value of $7,308,000/MWh occurred in TAS1 on 14 June 2026 around 21:30, causing regional prices to spike to $85.22/MWh. The constraint became active during an evening period when Tasmania's generation mix was dominated by approximately 3,730 MW of hydro capacity alongside modest wind and gas-fired generation.
High renewable penetration in TAS1: 99.3%, TAS1, high_renewable, minor
Tasmania achieved exceptional renewable penetration of 99.3% during the evening settlement period of 14 June 2026, with hydroelectric generation dominating at approximately 1,078–1,156 MW and wind contributing 73–96 MW. Regional reference prices remained stable in the AUD 70–71/MWh range throughout the period, indicating orderly market conditions despite the high renewable share.
WEM price spike in WA: $253/MWh across 1 trading interval, WA1, price_spike, moderate
The WEM experienced a moderate price spike in WA1 region, with the RRP reaching $253.22/MWh during the 19:50 trading interval on 14 June 2026. Prices escalated sharply over the preceding 25 minutes, rising from $185.28/MWh to the spike peak, representing a 36% increase in this single trading interval.
WEM price spike in WA: $386/MWh across 5 trading intervals, WA1, price_spike, major
The WEM experienced a sharp price spike in WA1 on 14 June 2026, with prices surging from $196/MWh to a peak of $386.38/MWh across five consecutive trading intervals between 12:10 and 12:30. Prices nearly doubled within a single interval and remained elevated above $360/MWh for four intervals before moderating.
WEM price spike in WA: $362/MWh across 1 trading interval, WA1, price_spike, major
The WEM in Western Australia experienced a sharp price spike to $362.20/MWh during the 06:40 interval on 14 June 2026, more than double the preceding interval's price of $177.47/MWh. This single-interval event occurred during the early morning period with mixed fuel sourcing across coal, gas, wind, and battery generation.
Sustained negative pricing in SA1: $-2/MWh for 2 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing at –$2/MWh for two intervals (04:40 and 05:10 on 14 June 2026), with prices remaining negative or near-zero across an eight-interval window. The region had high renewable generation (900.62 MW from wind and solar combined) during overnight/early morning hours when demand was low, creating excess supply conditions.
High renewable penetration in SA1: 85.5%, SA1, high_renewable, minor
South Australia (SA1) experienced high renewable penetration of 85.5%, driven primarily by substantial wind generation (1,177.58 MW) combined with solar output (265.97 MW combined) and gas generation. The period saw significant price volatility, with several negative pricing events and rapid swings between negative and positive values, reflecting the challenges of managing high renewable supply levels.
Sustained negative pricing in SA1: $-2/MWh for 2 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing of −$2/MWh across two consecutive intervals (23:15–23:20 on 13 June 2026), following a sharp price spike to $46.92 in the preceding interval. The negative pricing occurred within a generation environment dominated by wind (1,198.68 MW) and gas generation, alongside moderate solar and battery contributions.
High renewable penetration in TAS1: 100.0%, TAS1, high_renewable, minor
Tasmania achieved 100% renewable generation on 13 June 2026 between 20:05 and 20:35 UTC, with hydro and wind together supplying approximately 1,000 MW. Regional reference prices remained stable in the $66–73/MWh range during this period, indicating orderly market conditions despite the high renewable penetration.
High-value binding constraint in NEM: F_T+NIL_MG_RECL_R6 ($162400 shadow price), NEM, constraint_event, major
A binding constraint F_T+NIL_MG_RECL_R6 reached an exceptional marginal value of $162,400/MWh in the NEM, indicating severe scarcity in a specific part of the network. This constraint appeared multiple times across sequential intervals with substantially declining shadow prices, suggesting the binding condition eased progressively but remained active.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price), TAS1, constraint_event, major
A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $7,308,000/MWh was active in Tasmania on 13 June 2026 during the early afternoon period. Regional prices remained elevated and volatile, ranging from $46.81 to $67.62/MWh across the 40-minute window, whilst generation was dominated by hydro (629–674 MW) and wind (493–502 MW) with no gas-fired generation.
WEM price spike in WA: $355/MWh across 1 trading interval, WA1, price_spike, major
The WEM in WA1 experienced a sharp price spike to $354.66/MWh during the 12:10 UTC interval on 13 June 2026, representing a doubling of prices within five minutes from the $171.97/MWh level observed at 12:05 UTC. The spike was isolated to a single trading interval before prices stabilised.
Sustained negative pricing in SA1: $-0/MWh for 2 intervals, SA1, negative_price, minor
South Australia (SA1) experienced sustained negative pricing at -$0.1/MWh across 8 consecutive intervals from 23:55 on 12 June 2026 through 00:30 on 13 June 2026. The pricing floor reflects oversupply conditions driven primarily by high wind generation (1417.34 MW) coinciding with overnight low demand.
Sustained negative pricing in QLD1: $-2/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing of approximately –$1.73/MWh across two consecutive intervals (23:25–23:30 on 12 June 2026), representing a minor but notable event. The region was operating with high solar and wind generation (approximately 6,198 MW combined) alongside substantial black coal output (3,380 MW), creating a supply-demand imbalance during late evening demand trough.
Sustained negative pricing in VIC1: $-2/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing at approximately −$2.50/MWh across eight consecutive intervals during the evening of 12 June 2026, with the minimum price reaching −$2.67/MWh. The negative pricing persisted despite a substantial generation portfolio comprising over 6,300 MW of wind capacity and 3,120 MW of brown coal generation.
High renewable penetration in TAS1: 100.0%, TAS1, high_renewable, minor
Tasmania experienced 100% renewable energy penetration during the evening of 12 June 2026, with hydro and wind generation totalling approximately 1,898 MW across the region. Regional reference prices ranged from $66.51 to $74.96/MWh during this period, reflecting moderate wholesale electricity costs despite the high renewable contribution.
High-value binding constraint in NEM: F_T+NIL_MG_RECL_R6 ($3908 shadow price), NEM, constraint_event, moderate
A high-value binding constraint F_T+NIL_MG_RECL_R6 with a marginal value of $3908/MWh became active in the NEM, significantly elevating dispatch costs. This constraint was the dominant cost driver in the dispatch period, with the next-highest binding constraint valued at only $6.79/MWh, indicating a severe and isolated transmission or operational limitation.
Sustained negative pricing in SA1: $-3/MWh for 2 intervals, SA1, negative_price, minor
South Australia experienced sustained negative pricing in SA1 during the 18:05–18:40 settlement period on 12 June 2026, with prices reaching a minimum of −$12.83/MWh before recovering to around −$3/MWh. The episode reflected a period of excess generation relative to demand, with wind generation contributing over 1,000 MW to the region's supply.
Sustained negative pricing in VIC1: $-6/MWh for 2 intervals, VIC1, negative_price, minor
Victoria experienced sustained negative pricing with rates falling to −$12.73/MWh during the 15:40–15:50 interval window on 12 June 2026. The event occurred across 2 intervals during a period of high wind generation (approximately 6,034 MW combined) and elevated brown coal output (3,068 MW), creating excess supply relative to demand.
Sustained negative pricing in TAS1: $-15/MWh for 2 intervals, TAS1, negative_price, minor
TAS1 experienced sustained negative pricing at −$15/MWh across two consecutive intervals (13:20–13:25) on 12 June 2026, representing a minor severity event. Prices had been declining from around $70/MWh in the preceding hour before reaching the negative floor, suggesting a supply–demand imbalance favouring generation.
High renewable penetration in SA1: 96.6%, SA1, high_renewable, minor
South Australia (SA1) experienced high renewable penetration of 96.6% on 12 June 2026 around midday, driven primarily by substantial wind generation of 1,197.51 MW with minimal thermal contribution. This extreme renewable dominance resulted in negative spot prices ranging from −$2.83 to −$15.28/MWh across the settlement intervals, indicating oversupply conditions.
Sustained negative pricing in SA1: $-15/MWh for 2 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing at −$15.28/MWh in a single interval (12:40) on 12 June 2026, with broader negative pricing across the settlement period ranging from −$3 to −$15/MWh over two intervals. The region was generating substantial wind output (1313.55 MW) alongside battery discharge (152.30 MW combined) against minimal gas generation, creating a structural oversupply condition during the midday valley.
WEM price spike in WA: $253/MWh across 1 trading interval, WA1, price_spike, moderate
The WEM WA1 region experienced a moderate price spike to $253.22/MWh during the 10:20 trading interval on 12 June 2026, representing a sharp 43% increase from the previous interval. The spike was short-lived, with prices rising further to $355.77/MWh in the following interval before stabilising.
Sustained negative pricing in VIC1: $-0/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing over a 25-minute period (09:45–10:15) on 12 June 2026, with prices reaching a floor of −$0.10/MWh and dipping to −$4.68/MWh in the interval ending 09:55. The region maintained high renewable generation, particularly from wind sources (combined ~7,400 MW), alongside significant brown coal output (~4,033 MW).
High-value binding constraint in NEM: F_T+NIL_MG_RECL_R6 ($303 shadow price), NEM, constraint_event, moderate
A high-value binding constraint (F_T+NIL_MG_RECL_R6) with a marginal value of $303.21/MWh emerged in the NEM, indicating significant locational scarcity. This constraint was the dominant driver of pricing pressure, with multiple binding constraints simultaneously active across the market.
High-value binding constraint in VIC1: V_T_NIL_BL1 ($279 shadow price), VIC1, constraint_event, moderate
A binding constraint (V_T_NIL_BL1) with a marginal value of $278.70/MWh affected VIC1 pricing on 12 June 2026, causing significant price volatility with spot prices ranging from -$614.77 to $88.35/MWh over a 25-minute period. The constraint dominated the dispatch outcome, creating a substantial gap between the constraint's shadow price and the regional reference price.
Sustained negative pricing in SA1: $-7/MWh for 3 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing on 12 June 2026 during the early morning period (06:25–07:00), with three intervals reaching approximately −7/MWh and peak negative prices exceeding −15/MWh. The generation mix was dominated by wind (1,335.72 MW) and solar (48.35 MW combined), with minimal conventional generation and battery output.
Sustained negative pricing in VIC1: $-7/MWh for 2 intervals, VIC1, negative_price, minor
Victoria (VIC1) experienced sustained negative pricing over a 2-interval period on 12 June 2026 around 04:00 AEST, with the Regional Reference Price (RRP) falling to approximately -$7.55/MWh. The region had substantial renewable generation (2,531 MW wind and 514 MW solar) combined with significant brown coal output (3,073 MW), creating oversupply conditions during the early morning minimum demand period.