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

904

This Month

Most Active Region

TAS

Price SpikeWAmajor1 Sept 2026, 07:35 pm

WEM price spike in WA: $303/MWh across 1 trading interval

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Constraint EventTASmajor1 Sept 2026, 06:25 pm

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

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high_renewableTASminor1 Sept 2026, 05:00 pm

High renewable penetration in TAS1: 100.0%

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Negative PriceVICmoderate1 Sept 2026, 01:55 pm

Sustained negative pricing in VIC1: $-35/MWh for 3 intervals

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Negative PriceTASminor1 Sept 2026, 01:55 pm

Sustained negative pricing in TAS1: $-15/MWh for 3 intervals

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Negative PriceSAmoderate1 Sept 2026, 12:40 pm

Sustained negative pricing in SA1: $-47/MWh for 3 intervals

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Negative PriceQLDminor1 Sept 2026, 10:05 am

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

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Negative PriceNSWminor1 Sept 2026, 10:05 am

Sustained negative pricing in NSW1: $-3/MWh for 2 intervals

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high_renewableSAminor1 Sept 2026, 10:00 am

High renewable penetration in SA1: 95.0%

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Constraint EventNEMmajor1 Sept 2026, 08:05 am

High-value binding constraint in NEM: F_T+LREG_0050 ($232000 shadow price)

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Negative PriceTASminor1 Sept 2026, 08:05 am

Sustained negative pricing in TAS1: $-6/MWh for 3 intervals

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Negative PriceVICminor1 Sept 2026, 08:05 am

Sustained negative pricing in VIC1: $-6/MWh for 3 intervals

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Negative PriceSAminor1 Sept 2026, 06:50 am

Sustained negative pricing in SA1: $-7/MWh for 2 intervals

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Negative PriceVICminor1 Sept 2026, 02:15 am

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

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Negative PriceTASminor1 Sept 2026, 02:15 am

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

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Constraint EventTASmajor1 Sept 2026, 12:50 am

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

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Negative PriceSAminor1 Sept 2026, 12:15 am

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

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high_renewableTASminor31 Aug 2026, 05:00 pm

High renewable penetration in TAS1: 100.0%

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Negative PriceTASminor31 Aug 2026, 01:25 pm

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

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Negative PriceVICminor31 Aug 2026, 01:25 pm

Sustained negative pricing in VIC1: $-4/MWh for 2 intervals

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Negative PriceSAminor31 Aug 2026, 12:45 pm

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

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high_renewableSAminor31 Aug 2026, 10:00 am

High renewable penetration in SA1: 91.0%

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Negative PriceQLDminor31 Aug 2026, 09:15 am

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

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Constraint EventTASmajor31 Aug 2026, 08:15 am

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

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Price SpikeWAmajor30 Aug 2026, 10:05 pm

WEM price spike in WA: $352/MWh across 1 trading interval

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high_renewableTASminor30 Aug 2026, 05:00 pm

High renewable penetration in TAS1: 89.9%

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Negative PriceQLDminor30 Aug 2026, 02:25 pm

Sustained negative pricing in QLD1: $-7/MWh for 2 intervals

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Negative PriceNSWminor30 Aug 2026, 11:45 am

Sustained negative pricing in NSW1: $-5/MWh for 2 intervals

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Negative PriceTASminor30 Aug 2026, 11:40 am

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

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Negative PriceSAminor30 Aug 2026, 11:40 am

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

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Showing 30 of 904

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Recent Market Events

WEM price spike in WA: $303/MWh across 1 trading interval, WA1, price_spike, major
WA1 experienced a sharp price spike to $303/MWh in the 09:35 trading interval on 1 September 2026, representing a 82% jump from the previous interval's $166.97/MWh. The spike occurred as a single-interval event within a broader period of elevated pricing across the preceding 25 minutes.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $8.352 million was active in TAS1 on 1 September 2026 at 08:00–08:25 UTC, coinciding with modest RRP volatility in the $30–$53 range. The constraint was binding alongside a secondary constraint (F_T+NIL_MRWF_TG_R6) with marginal values in the $71–$105 range, indicating tight system conditions.
High renewable penetration in TAS1: 100.0%, TAS1, high_renewable, minor
Tasmania achieved 100% renewable penetration on 1 September 2026 during the early morning period (06:35–06:55), with wind and hydro generation totalling approximately 1,244–1,359 MW across successive settlement periods. Regional reference prices (RRP) fluctuated between $21.30 and $38.59/MWh during this window, indicating moderate volatility despite the high renewable contribution.
Sustained negative pricing in VIC1: $-35/MWh for 3 intervals, VIC1, negative_price, moderate
VIC1 experienced sustained negative pricing across three intervals on 1 September 2026, with the minimum price reaching $-34.89/MWh at 04:00. The pricing event occurred during the early morning period when wind and solar generation totalled approximately 2,389 MW, representing a significant portion of the region's total generation mix of around 4,675 MW.
Sustained negative pricing in TAS1: $-15/MWh for 3 intervals, TAS1, negative_price, minor
TAS1 experienced sustained negative pricing over a 3-interval window during the early morning period of 1 September 2026, with the minimum price reaching −$20.99/MWh. The region's generation mix was dominated by wind (320–431 MW) and hydro (334–353 MW) with no gas-fired generation active, creating an oversupply condition.
Sustained negative pricing in SA1: $-47/MWh for 3 intervals, SA1, negative_price, moderate
South Australia 1 (SA1) experienced sustained negative pricing over three intervals on 1 September 2026, with prices reaching a minimum of –$47.28/MWh at 02:45. The region's generation mix was dominated by wind (779.3 MW) alongside modest solar and gas output, creating an oversupply condition during the early morning period.
Sustained negative pricing in QLD1: $-3/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing with a minimum of -$3/MWh across 2 intervals during the late evening of 31 August 2026 and early morning of 1 September 2026. Price fell from $22.85/MWh to negative territory over a 30-minute period, indicating a rapid shift in supply–demand balance.
Sustained negative pricing in NSW1: $-3/MWh for 2 intervals, NSW1, negative_price, minor
NSW1 experienced sustained negative pricing with a minimum of -$3.08/MWh across 2 intervals during the early morning period of 1 September 2026. The negative prices occurred within a broader pattern of low to volatile pricing ranging from -$3.08 to $23.95/MWh over an 8-interval window.
High renewable penetration in SA1: 95.0%, SA1, high_renewable, minor
South Australia (SA1) experienced very high renewable penetration of 95% during the late evening of 31 August 2026, driven predominantly by wind generation (740 MW) and solar output (288 MW combined). Wholesale electricity prices turned significantly negative, ranging from −$20 to −$119.67/MWh across the settlement period, reflecting oversupply conditions.
High-value binding constraint in NEM: F_T+LREG_0050 ($232000 shadow price), NEM, constraint_event, major
A significant binding constraint event occurred in the NEM with constraint F_T+LREG_0050 displaying an exceptionally high shadow price of $232,000 per MWh, indicating severe scarcity in the constrained region. This extreme marginal value substantially exceeded other concurrent binding constraints, which ranged from $3.52 to $71.25 per MWh.
Sustained negative pricing in TAS1: $-6/MWh for 3 intervals, TAS1, negative_price, minor
Tasmania experienced sustained negative pricing over three intervals on 31 August 2026, with prices declining to -$6.31/MWh at 22:15. The event occurred during a period of elevated renewable generation (hydro and wind combining to provide approximately 900 MW) with no gas generation online.
Sustained negative pricing in VIC1: $-6/MWh for 3 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing over three intervals (21:50–22:15 on 31 August 2026), with prices declining to a minimum of –$6/MWh. The event occurred during a period of high renewable generation, with combined wind output exceeding 6,800 MW and solar contributing over 600 MW, whilst brown coal generation remained substantial at approximately 3,000 MW.
Sustained negative pricing in SA1: $-7/MWh for 2 intervals, SA1, negative_price, minor
South Australia (SA1) experienced sustained negative pricing of −$7.14/MWh during the 21:00 settlement interval on 31 August 2026, with negative prices occurring in at least 2 intervals. The region's generation mix was dominated by wind output (1,878.52 MW) with supporting battery and gas-fired generation, creating an oversupply condition.
Sustained negative pricing in VIC1: $-0/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced brief negative pricing in two consecutive intervals (16:15–16:20 on 31 August 2026), with prices reaching −$0.05/MWh, following a sharp price collapse from $10.50/MWh. The event was minor in severity and occurred amid high wind generation (approximately 5,550 MW combined) and substantial brown coal output (3,299 MW).
Sustained negative pricing in TAS1: $-0/MWh for 2 intervals, TAS1, negative_price, minor
TAS1 experienced sustained negative pricing, with two consecutive intervals settling at −$0/MWh (−$0.04 and −$0.05/MWh) on 31 August 2026 around 16:15–16:20. This followed a sharp price collapse from $9.30/MWh to $0/MWh in the preceding interval, before prices recovered to $11.51–$15.04/MWh in surrounding periods.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $8.352 million/MWh occurred in TAS1 on 31 August 2026 around 14:25–14:50 AEST. Regional electricity prices remained relatively moderate at approximately $25–29/MWh despite the extreme constraint shadow price, suggesting the constraint was actively limiting dispatch rather than driving spot prices upward.
Sustained negative pricing in SA1: $-1/MWh for 2 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing at -$1/MWh across two consecutive 5-minute intervals (14:15 and 14:20 on 31 August 2026), representing a minor pricing event. This followed a period of declining positive prices and occurred during a period of high wind generation (approximately 1,370 MW) with minimal solar output.
High renewable penetration in TAS1: 100.0%, TAS1, high_renewable, minor
Tasmania achieved 100% renewable generation during the 06:35–07:05 UTC settlement period on 31 August 2026, with hydro and wind sources totalling approximately 2,669 MW across multiple dispatch intervals. Prices rose sharply from $50.22/MWh to a peak of $100.10/MWh at 06:50 UTC before moderating to $82.74/MWh by 07:05 UTC.
Sustained negative pricing in TAS1: $-4/MWh for 2 intervals, TAS1, negative_price, minor
Tasmania experienced sustained negative pricing in two intervals during the early morning of 31 August 2026, with the lowest price reaching −$3.84/MWh at 03:35. The event occurred during a period of moderate renewable generation, with approximately 350 MW of hydro and 160–190 MW of wind supplying the region.
Sustained negative pricing in VIC1: $-4/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced negative pricing in two intervals during the early morning of 31 August 2026, with the minimum price reaching -$3.64/MWh at 03:35. The event occurred during a period of high solar generation (1,235.59 MW) and substantial battery output (167.81 MW), coinciding with low system demand typical of the overnight period.
Sustained negative pricing in SA1: $-1/MWh for 2 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing at -$0.50/MWh and -$0.31/MWh across two consecutive 5-minute intervals (02:45–02:50 on 31 August 2026), following a declining price trend from $1.69/MWh. The generation mix during this period was dominated by solar (501–508 MW) and wind (258 MW) output, totalling approximately 1,347 MW of renewable generation.
High renewable penetration in SA1: 91.0%, SA1, high_renewable, minor
South Australia (SA1) experienced 91% renewable penetration during the settlement period ending 31 August 2026 at 00:00, driven by high wind generation (670.6 MW) and combined solar output (708.2 MW) against modest gas-fired generation. Prices collapsed to $0/MWh at 00:00, then recovered to $14.19/MWh by 00:05, indicating a brief oversupply condition followed by rapid rebalancing.
Sustained negative pricing in QLD1: $-3/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced brief negative pricing on 30 August 2026 at 23:15 and 23:20 (local time), with minimum price of -$2.91/MWh across two intervals. The event occurred during evening peak with substantial solar generation (approximately 2,950 MW) still contributing alongside coal and wind, creating oversupply conditions.
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) with an exceptionally high shadow price of $8.352 million/MWh occurred in TAS1 on 30 August 2026 around 21:50–22:15 UTC. Regional spot prices declined sharply from 42.64 $/MWh to 25.10 $/MWh over this 25-minute period, suggesting the constraint was progressively relieved. The TAS1 generation mix was dominated by hydro output (ranging 1152–1281 MW) supplemented by wind (187–229 MW) and gas-fired generation (124–125 MW).
WEM price spike in WA: $352/MWh across 1 trading interval, WA1, price_spike, major
WEM prices in Western Australia spiked to $352.26/MWh during the 12:05 trading interval on 30 August 2026, representing a 161% increase from the previous interval and a sustained step-change from the $115–135/MWh range observed in the preceding 25 minutes. The spike persisted for a single trading interval before resolution is not confirmed in the available data.
High renewable penetration in TAS1: 89.9%, TAS1, high_renewable, minor
Tasmania experienced very high renewable penetration of 89.9% on 30 August 2026, with hydro and wind generation totalling approximately 2,212 MW across six settlement periods. Despite abundant renewable supply, region reference prices (RRP) rose sharply from $15.14/MWh at 06:35 to $85.09/MWh by 07:00, a 462% increase over 25 minutes.
Sustained negative pricing in QLD1: $-7/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing over a 20-minute window on 30 August 2026, with prices reaching −$8.71/MWh and remaining negative across multiple settlement intervals. The region generated approximately 4.4 GW of solar output during early morning hours alongside substantial black coal and wind generation, creating structural oversupply conditions.
Sustained negative pricing in NSW1: $-5/MWh for 2 intervals, NSW1, negative_price, minor
NSW1 experienced sustained negative pricing during the 01:45–01:50 settlement intervals on 30 August 2026, with the minimum price reaching −$4.81/MWh. The negative pricing followed a period of zero and near-zero prices, indicating severe oversupply conditions in the region.
Sustained negative pricing in TAS1: $-4/MWh for 2 intervals, TAS1, negative_price, minor
TAS1 experienced sustained negative pricing over two intervals during the early morning of 30 August 2026, with prices declining from $1.04/MWh to a minimum of -$3.56/MWh between 01:25 and 01:45. The region's generation mix was dominated by renewable sources (hydro and wind totalling approximately 530–590 MW) alongside moderate gas-fired generation of around 124 MW.
Sustained negative pricing in SA1: $-3/MWh for 2 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing with the region reaching −$3.09/MWh during the 01:45 settlement interval on 30 August 2026, with negative prices occurring across 2 consecutive intervals. Prices declined progressively from $7.87/MWh to negative territory over a 30-minute period, indicating a rapid shift in supply–demand balance.