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

860

This Month

210

Most Active Region

TAS

high_renewableTASminor28 Aug 2026, 04:30 pm

High renewable penetration in TAS1: 91.6%

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Constraint EventTASmajor28 Aug 2026, 03:20 pm

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

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Negative PriceNSWminor28 Aug 2026, 01:25 pm

Sustained negative pricing in NSW1: $-8/MWh for 2 intervals

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Negative PriceQLDminor28 Aug 2026, 01:20 pm

Sustained negative pricing in QLD1: $-6/MWh for 2 intervals

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Price SpikeWAmoderate28 Aug 2026, 09:20 am

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

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Constraint EventTASmajor28 Aug 2026, 08:40 am

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

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Price SpikeWAmajor27 Aug 2026, 08:25 pm

WEM price spike in WA: $307/MWh across 1 trading interval

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high_renewableTASminor27 Aug 2026, 04:30 pm

High renewable penetration in TAS1: 89.1%

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Negative PriceQLDminor27 Aug 2026, 02:55 pm

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

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high_renewableSAminor27 Aug 2026, 11:00 am

High renewable penetration in SA1: 85.4%

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Constraint EventTASmajor27 Aug 2026, 08:50 am

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

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Price SpikeWAmajor26 Aug 2026, 06:20 pm

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

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high_renewableTASminor26 Aug 2026, 04:25 pm

High renewable penetration in TAS1: 87.2%

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Negative PriceNSWminor26 Aug 2026, 03:10 pm

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

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Negative PriceVICminor26 Aug 2026, 03:00 pm

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

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Negative PriceTASminor26 Aug 2026, 03:00 pm

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

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Negative PriceQLDminor26 Aug 2026, 02:40 pm

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

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Constraint EventTASmajor26 Aug 2026, 09:35 am

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

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high_renewableTASminor25 Aug 2026, 04:30 pm

High renewable penetration in TAS1: 92.1%

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high_renewableSAminor25 Aug 2026, 08:30 am

High renewable penetration in SA1: 97.9%

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Negative PriceSAminor25 Aug 2026, 04:50 am

Sustained negative pricing in SA1: $-6/MWh for 2 intervals

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high_renewableTASminor24 Aug 2026, 04:30 pm

High renewable penetration in TAS1: 90.0%

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Negative PriceNSWminor24 Aug 2026, 03:35 pm

Sustained negative pricing in NSW1: $-7/MWh for 3 intervals

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Negative PriceQLDminor24 Aug 2026, 03:35 pm

Sustained negative pricing in QLD1: $-7/MWh for 3 intervals

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Price SpikeWAmoderate24 Aug 2026, 02:45 pm

WEM price spike in WA: $274/MWh across 1 trading interval

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high_renewableSAminor24 Aug 2026, 08:30 am

High renewable penetration in SA1: 95.4%

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Constraint EventTASmajor24 Aug 2026, 07:45 am

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

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Constraint EventTASmajor24 Aug 2026, 12:05 am

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

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high_renewableTASminor23 Aug 2026, 04:30 pm

High renewable penetration in TAS1: 100.0%

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Negative PriceSAminor23 Aug 2026, 04:10 pm

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

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Showing 30 of 860

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Recent Market Events

High renewable penetration in TAS1: 91.6%, TAS1, high_renewable, minor
Tasmania experienced very high renewable penetration of 91.6% on 28 August 2026, driven by substantial hydro generation (approximately 2.8 GW combined) and wind output (around 713 MW). Notwithstanding the high renewables contribution, regional electricity prices increased noticeably from around $68–$78/MWh to $122–$125/MWh between 06:05 and 06:30, suggesting constraint-driven pricing pressure despite abundant clean generation.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
A major binding constraint event occurred in TAS1 on 28 August 2026 with constraint T_BLINK_TV_NGZ reaching an exceptionally high shadow price of $8.352 million per MWh. Regional spot prices remained moderate, ranging from $40.77 to $25.10/MWh during the period, whilst Tasmania's generation mix comprised substantial hydro output (approximately 2451 MW combined), wind generation (809 MW combined), and gas-fired capacity (250 MW).
Sustained negative pricing in NSW1: $-8/MWh for 2 intervals, NSW1, negative_price, minor
NSW1 experienced sustained negative pricing at -$8.1/MWh during the 03:30 interval on 28 August 2026, with negative prices occurring across 2 consecutive intervals in the early morning period. The negative pricing event occurred amid high solar generation (3,328 MW) and moderate wind generation (305 MW), with minimal gas-fired and no hydro or battery generation available.
Sustained negative pricing in QLD1: $-6/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing at $-6/MWh for two consecutive intervals (03:20–03:25 on 28 August 2026), following a sharp price decline from $0.73/MWh in the preceding interval. The event occurred during high solar generation (2,202–2,309 MW) combined with substantial black coal output (3,322 MW), creating a supply-demand imbalance in the pre-dawn period.
WEM price spike in WA: $257/MWh across 1 trading interval, WA1, price_spike, moderate
The WEM region WA1 experienced a moderate price spike to $256.83/MWh at 23:20 on 27 August 2026, representing a sharp increase from the preceding interval at $175.36/MWh. The spike occurred as a single-interval event within an otherwise elevated pricing period, with prices ranging between $132–$176/MWh in the five preceding intervals.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
A major binding constraint event occurred in TAS1 on 27 August 2026, with constraint T_BLINK_TV_NGZ reaching an exceptionally high shadow price of $8.352 million, indicating severe scarcity or physical limitation. Over the six settlement periods captured, regional reference prices ranged from $26.82/MWh to $45.16/MWh, reflecting the constraint's binding status during this evening peak period.
WEM price spike in WA: $307/MWh across 1 trading interval, WA1, price_spike, major
The WEM in WA experienced a major price spike to $307.06/MWh during the 10:25 UTC interval on 27 August 2026, representing a 120% increase from the previous interval at $166.17/MWh. The spike was isolated to a single five-minute trading interval before prices did not continue at elevated levels in the immediate subsequent intervals shown.
High renewable penetration in TAS1: 89.1%, TAS1, high_renewable, minor
Tasmania experienced high renewable penetration of 89.1% on 27 August 2026, with hydro and wind generation totalling approximately 2,216 MW across the settlement period. Despite abundant renewable supply, regional prices escalated sharply from $26.11/MWh to $70.16/MWh across the six 5-minute intervals, suggesting supply-side constraints rather than demand-driven pricing.
Sustained negative pricing in QLD1: $-4/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing at −$4.09/MWh during the 04:55 interval and −$1.45/MWh at 05:00 on 27 August 2026. This occurred during the early morning period with high solar generation (approximately 3000 MW) and substantial black coal output (3124 MW), resulting in oversupply relative to demand.
High renewable penetration in SA1: 85.4%, SA1, high_renewable, minor
South Australia (SA1) experienced high renewable penetration at 85.4% during the 00:35–00:55 UTC period on 27 August 2026, driven by substantial solar (976.52 MW combined) and wind (347.68 MW) generation. Regional spot prices remained modest, ranging from $18.46 to $49.23/MWh, with volatility in the 00:40–00:45 window despite high renewable supply.
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 per MWh occurred in TAS1 on 26 August 2026, causing significant price volatility with spot prices spiking to $88.24/MWh during the affected period. The constraint became the dominant price-setting mechanism, substantially exceeding the marginal values of secondary binding constraints.
WEM price spike in WA: $303/MWh across 1 trading interval, WA1, price_spike, major
The WEM experienced a sharp price spike in WA1 to $303/MWh during the 08:20 trading interval on 26 August 2026, representing a 47% jump from the preceding interval's $205.85/MWh. The spike occurred in isolation, with prices returning to the $180–$210 range in surrounding intervals, indicating a discrete supply-demand imbalance event.
High renewable penetration in TAS1: 87.2%, TAS1, high_renewable, minor
Tasmania experienced high renewable penetration of 87.2% on 26 August 2026, driven by strong hydro and wind generation totalling approximately 2,002 MW. Regional reference prices rose from $32.14/MWh to a peak of $78.66/MWh over the 30-minute window, indicating constraint-driven pricing despite the high renewable contribution.
Sustained negative pricing in NSW1: $-2/MWh for 2 intervals, NSW1, negative_price, minor
NSW1 experienced sustained negative pricing at −$2/MWh for one interval (05:15) on 26 August 2026, with prices declining from $73.30/MWh in the preceding interval. The negative pricing event occurred during high solar generation (2,892 MW) and elevated wind generation (281 MW) in a system with substantial black coal output (4,362 MW), creating oversupply conditions in the early morning period.
Sustained negative pricing in VIC1: $-4/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing at –$3.50/MWh and –$0.93/MWh across two consecutive intervals (05:00 and 05:10 on 26 August 2026), representing a minor pricing event in an otherwise moderate price period. The negative prices occurred during high renewable generation, with solar contributing 1,296 MW and wind 1,149 MW combined, alongside 4,058 MW of brown coal generation.
Sustained negative pricing in TAS1: $-4/MWh for 2 intervals, TAS1, negative_price, minor
Tasmania experienced minor negative pricing at −$3.70/MWh during a single interval at 05:00 on 26 August 2026, with prices briefly dipping negative again to −$0.96/MWh in the following interval. This followed a price decay from $20.27/MWh in the preceding interval, suggesting rapid supply–demand rebalancing in the early morning period.
Sustained negative pricing in QLD1: $-4/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing during two intervals on 26 August 2026 at 04:40 and 04:45, reaching a minimum of −$3.51/MWh. This occurred during the early morning period when solar generation was ramping up to approximately 2,850 MW, coinciding with high black coal output of around 3,600 MW.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
A major binding constraint event occurred in TAS1 on 25 August 2026 at 23:35 UTC, with constraint T_BLINK_TV_NGZ reaching an exceptionally high shadow price of $8.352 million. This extreme marginal value coincided with TAS1 spot prices rising to $88.24/MWh, representing significant price volatility across the settlement period.
High renewable penetration in TAS1: 92.1%, TAS1, high_renewable, minor
Tasmania1 (TAS1) experienced high renewable penetration of 92.13% on 25 August 2026 during the early morning period, with hydro generation dominating at approximately 1,360 MW across multiple dispatch intervals. Regional reference prices (RRP) rose progressively from $88.24/MWh to $116.99/MWh over the 25-minute observation window, indicating tightening conditions despite the high renewable contribution.
High renewable penetration in SA1: 97.9%, SA1, high_renewable, minor
South Australia achieved 97.9% renewable generation penetration during the settlement period of 24 August 2026 at 22:05–22:35 UTC, driven predominantly by wind generation of 1,551 MW supplemented by battery discharge of 684 MW. Regional reference electricity prices (RRP) remained moderate in the $83–$88/MWh band throughout the interval, reflecting the abundant renewable supply.
Sustained negative pricing in SA1: $-6/MWh for 2 intervals, SA1, negative_price, minor
South Australia (SA1) experienced sustained negative pricing at −$6.25/MWh during the 18:50 interval on 24 August 2026, followed by a partial recovery to −$1.28/MWh in the subsequent interval. This represents a sharp deviation from the preceding positive prices of approximately $9/MWh. The negative pricing occurred during a period of high wind generation (1,646 MW) with minimal solar and battery output, suggesting oversupply conditions in the region.
High renewable penetration in TAS1: 90.0%, TAS1, high_renewable, minor
Tasmania (TAS1) experienced high renewable penetration of 90% during the morning of 24 August 2026, driven by substantial hydro generation (averaging ~1,098 MW across the period) supplemented by wind output. Regional prices ranged from $66–$109/MWh across the five-minute settlement intervals, with volatility concentrated in the 06:10–06:15 window.
Sustained negative pricing in NSW1: $-7/MWh for 3 intervals, NSW1, negative_price, minor
NSW1 experienced sustained negative pricing across three intervals on 24 August 2026 at 05:35–05:45, with prices declining to a minimum of −$6.62/MWh. The event occurred during early morning low-demand conditions with very high solar generation (2,691 MW) and substantial wind generation (524 MW) overwhelming system requirements.
Sustained negative pricing in QLD1: $-7/MWh for 3 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing over three intervals on 24 August 2026, with the lowest point reaching −$7.01/MWh at 05:45 UTC. Prices progressively declined from zero before turning negative, reflecting a supply-demand imbalance during the early morning period.
WEM price spike in WA: $274/MWh across 1 trading interval, WA1, price_spike, moderate
WEM prices in WA1 spiked to $274.19/MWh at 04:45 on 24 August 2026, a sharp increase from the prior interval at $140.03/MWh and a sustained jump from the $102–104/MWh baseline observed 15–25 minutes earlier. The spike persisted for a single trading interval before resolution.
High renewable penetration in SA1: 95.4%, SA1, high_renewable, minor
South Australia (SA1) experienced high renewable penetration of 95.4% during the evening of 23 August 2026, driven predominantly by wind generation of 968.59 MW alongside battery output of 207.1 MW combined. Regional prices exhibited high volatility during this period, with rapid fluctuations between $55.68/MWh and $156.10/MWh across five-minute settlement intervals.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
A binding constraint (T_BLINK_TV_NGZ) in TAS1 reached an exceptionally high shadow price of $8.35 million, indicating severe scarcity or transmission limitations affecting the region during the 21:20–21:50 settlement period on 23 August 2026. Regional spot prices ranged between $34–$52/MWh during this interval, with Tasmanian generation comprising approximately 1,200–1,300 MW of hydro and 290–360 MW of wind across the snapshot period.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
Tasmania experienced a major constraint event on 23 August 2026 with binding constraint T_BLINK_TV_NGZ reaching an extremely high shadow price of $8.352 million, whilst regional prices remained moderate (ranging from $23.69 to $55.12/MWh). The constraint binding coincided with substantial hydro and wind generation across multiple settlement intervals, with total available renewable capacity exceeding 2,600 MW.
High renewable penetration in TAS1: 100.0%, TAS1, high_renewable, minor
Tasmania achieved 100% renewable generation during the early morning period of 23 August 2026, with hydro, wind, and rooftop solar providing all generation capacity. Regional reference prices exhibited significant volatility, ranging from −$2.96/MWh to $64.20/MWh across the six consecutive five-minute settlement periods, suggesting rapid changes in system conditions or constraints.
Sustained negative pricing in SA1: $-3/MWh for 2 intervals, SA1, negative_price, minor
South Australia (SA1) experienced sustained negative pricing during the early morning period of 23 August 2026, with two intervals recording prices around −$3/MWh. The negative pricing occurred against a background of high renewable generation, particularly solar (278–230 MW) and wind (169 MW) output, combined with moderate gas generation.