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.

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Total Events

928

This Month

Most Active Region

TAS

high_renewableTASminor3 Sept 2026, 05:00 pm

High renewable penetration in TAS1: 100.0%

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Negative PriceSAminor3 Sept 2026, 03:00 pm

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

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Negative PriceTASminor3 Sept 2026, 02:45 pm

Sustained negative pricing in TAS1: $-8/MWh for 2 intervals

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Negative PriceVICminor3 Sept 2026, 02:45 pm

Sustained negative pricing in VIC1: $-8/MWh for 2 intervals

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Constraint EventNEMmoderate3 Sept 2026, 02:20 pm

High-value binding constraint in NEM: F_T+RREG_0050 ($1002 shadow price)

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Negative PriceNSWminor3 Sept 2026, 01:55 pm

Sustained negative pricing in NSW1: $-7/MWh for 2 intervals

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Negative PriceQLDmoderate3 Sept 2026, 01:25 pm

Sustained negative pricing in QLD1: $-34/MWh for 3 intervals

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high_renewableSAminor3 Sept 2026, 10:30 am

High renewable penetration in SA1: 95.0%

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Negative PriceSAminor3 Sept 2026, 09:10 am

Sustained negative pricing in SA1: $-4/MWh for 2 intervals

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Negative PriceVICminor3 Sept 2026, 08:05 am

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

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Negative PriceNSWminor3 Sept 2026, 08:05 am

Sustained negative pricing in NSW1: $-6/MWh for 2 intervals

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Negative PriceTASminor3 Sept 2026, 08:05 am

Sustained negative pricing in TAS1: $-7/MWh for 2 intervals

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Negative PriceQLDminor3 Sept 2026, 07:35 am

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

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Negative PriceSAminor3 Sept 2026, 03:10 am

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

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Constraint EventTASmajor2 Sept 2026, 11:30 pm

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

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high_renewableTASminor2 Sept 2026, 05:00 pm

High renewable penetration in TAS1: 100.0%

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Negative PriceTASminor2 Sept 2026, 01:25 pm

Sustained negative pricing in TAS1: $-3/MWh for 2 intervals

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Negative PriceVICminor2 Sept 2026, 01:15 pm

Sustained negative pricing in VIC1: $-3/MWh for 2 intervals

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Constraint EventNEMmajor2 Sept 2026, 12:05 pm

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

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high_renewableSAminor2 Sept 2026, 10:30 am

High renewable penetration in SA1: 90.5%

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Negative PriceQLDminor2 Sept 2026, 09:15 am

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

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Negative PriceNSWminor2 Sept 2026, 09:15 am

Sustained negative pricing in NSW1: $-4/MWh for 2 intervals

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Constraint EventTASmajor2 Sept 2026, 09:05 am

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

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Price SpikeWAmoderate2 Sept 2026, 05:05 am

WEM price spike in WA: $285/MWh across 1 trading interval

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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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Showing 30 of 928

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Recent Market Events

High renewable penetration in TAS1: 100.0%, TAS1, high_renewable, minor
Tasmania achieved 100% renewable generation during the 06:35–07:05 period on 3 September 2026, with hydro and wind collectively meeting all demand. Regional Reference Prices (RRP) fluctuated between $33.84 and $109.47/MWh, with a notable spike to $109.47/MWh at 06:45, followed by a sharp decline to $33.84/MWh by 07:05.
Sustained negative pricing in SA1: $-7/MWh for 3 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing between 04:40 and 05:05 on 3 September 2026, with prices reaching −$7.00/MWh over a 3-interval window. The region had high renewable generation (163–246 MW solar, 323 MW wind) concurrent with moderate gas-fired output (85 MW CCGT), creating conditions of structural oversupply during low-demand early morning periods.
Sustained negative pricing in TAS1: $-8/MWh for 2 intervals, TAS1, negative_price, minor
TAS1 experienced sustained negative pricing on 3 September 2026 in the early morning period, with the region recording prices of −$7.94/MWh and −$6.27/MWh across two consecutive intervals. The negative pricing occurred during a period of elevated renewable generation, with wind contributing approximately 460 MW and hydro approximately 375–192 MW to the region's supply mix.
Sustained negative pricing in VIC1: $-8/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing during the early morning of 3 September 2026, with prices reaching −$7.62/MWh at 04:45 and −$6.00/MWh at 04:50. The event spanned two intervals with an average minimum price of approximately −$8/MWh, occurring during a period of high renewable generation (wind and solar totalling over 6,500 MW) combined with inflexible brown coal baseload output.
High-value binding constraint in NEM: F_T+RREG_0050 ($1002 shadow price), NEM, constraint_event, moderate
A binding constraint (F_T+RREG_0050) reached a notably elevated shadow price of $1002.29/MWh in the NEM, indicating significant scarcity in the constrained element. The same constraint identifier appears across five binding constraint instances with marginal values ranging from $1002.29 down to $3.46/MWh, suggesting variable binding pressure across different dispatch intervals or regions.
Sustained negative pricing in NSW1: $-7/MWh for 2 intervals, NSW1, negative_price, minor
NSW1 experienced sustained negative pricing at approximately –$7 to –$10/MWh across two intervals during the early morning period of 3 September 2026. The negative pricing persisted across multiple consecutive settlement periods, with the minimum price reaching –$10/MWh.
Sustained negative pricing in QLD1: $-34/MWh for 3 intervals, QLD1, negative_price, moderate
QLD1 experienced sustained negative pricing over three consecutive intervals on 3 September 2026 at 03:00–03:35 AEST, with prices declining to a minimum of −$33.85/MWh. The event occurred during the early morning period when solar generation dominated the region's supply mix at approximately 3,888 MW combined, alongside substantial black coal output of 3,239 MW, creating a significant supply surplus relative to demand.
High renewable penetration in SA1: 95.0%, SA1, high_renewable, minor
South Australia (SA1) experienced very high renewable penetration of 95.0% during the early morning period of 3 September 2026, driven primarily by wind generation (636 MW) and solar output (439 MW combined). This high renewable contribution resulted in negative regional reference prices ranging from −$20.00/MWh to −$7.00/MWh across the six consecutive five-minute settlement periods.
Sustained negative pricing in SA1: $-4/MWh for 2 intervals, SA1, negative_price, minor
South Australia experienced sustained negative pricing with two intervals recording sub-zero rates (minimum -$3.73/MWh) on 2 September 2026 around 23:10 AEST. The event occurred during evening periods when high renewable generation (1209 MW wind, 489 MW solar) coincided with relatively low demand, creating an oversupply condition.
Sustained negative pricing in VIC1: $-7/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing over two consecutive intervals on 2 September 2026, with the minimum spot price reaching −$6.53/MWh at 22:10. The pricing event occurred during a period of high renewable generation (wind and solar totalling approximately 7,021 MW) combined with inflexible brown coal baseload supply (2,870 MW).
Sustained negative pricing in NSW1: $-6/MWh for 2 intervals, NSW1, negative_price, minor
NSW1 experienced sustained negative pricing, reaching -$5.89/MWh over two consecutive 5-minute intervals (22:05 and 22:10 on 2 September 2026). The region had high renewable generation (solar 2644.64 MW, wind 1564.37 MW) coinciding with moderate coal output (3012.30 MW), creating structural oversupply conditions.
Sustained negative pricing in TAS1: $-7/MWh for 2 intervals, TAS1, negative_price, minor
Tasmania experienced sustained negative pricing in TAS1, with prices reaching -$6.79/MWh during the 22:10 interval on 2 September 2026. The negative pricing occurred across 2 intervals following a period of very low positive prices (below $0.10/MWh). High wind and hydro generation totalling approximately 1,200-1,300 MW during this period created an oversupply condition in the region.
Sustained negative pricing in QLD1: $-4/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing during the 21:35–21:40 settlement intervals on 2 September 2026, with the minimum price reaching −$3.73/MWh. The event occurred during high solar generation (approximately 2,548 MW combined) and moderate thermal output, with prices collapsing sharply from $20.46/MWh to negative territory within two intervals.
Sustained negative pricing in SA1: $-2/MWh for 2 intervals, SA1, negative_price, minor
South Australia (SA1) experienced sustained negative pricing reaching −$2.28/MWh across two consecutive intervals (17:10–17:15 on 2 September 2026), following a period of near-zero or minimal positive pricing. The region's generation mix was dominated by wind output at approximately 1,592 MW, with marginal gas-fired and battery contributions, creating an oversupply condition.
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 occurred in Tasmania on 2 September 2026 during the 13:05–13:35 window. Regional energy prices fell sharply from around $40/MWh to $15/MWh over this period, despite stable generation from hydro and wind sources totalling approximately 1,140–1,350 MW.
High renewable penetration in TAS1: 100.0%, TAS1, high_renewable, minor
Tasmania experienced 100% renewable generation on 2 September 2026 at 06:35–06:55 UTC, with hydro and wind together meeting all demand. Despite high renewable penetration, real system prices rose sharply from ~$25/MWh to $75/MWh within 10 minutes, indicating constraint-driven scarcity.
Sustained negative pricing in TAS1: $-3/MWh for 2 intervals, TAS1, negative_price, minor
Tasmania experienced sustained negative pricing of approximately $-3/MWh across two consecutive intervals (03:25 and 03:30 on 2 September 2026), representing a minor market event. Prices fell sharply from $25.24/MWh in the preceding intervals, indicating a sudden supply-demand imbalance.
Sustained negative pricing in VIC1: $-3/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing at −$3.42/MWh across two intervals (03:15 and 03:25 on 2 September 2026) during early morning hours. The price collapse occurred in a dispatch interval characterised by high renewable generation (wind and solar totalling 2,973 MW) and substantial brown coal output (3,218 MW), creating a structural oversupply condition.
High-value binding constraint in NEM: F_T+LREG_0050 ($232000 shadow price), NEM, constraint_event, major
A binding constraint (F_T+LREG_0050) in the NEM reached an exceptionally high shadow price of $232,000/MWh, indicating severe scarcity in the market. This represents a major constraint event with the primary binding constraint delivering a marginal value approximately 67,000 times higher than the secondary binding constraints, which ranged from $3.44 to $3.46/MWh.
High renewable penetration in SA1: 90.5%, SA1, high_renewable, minor
SA1 experienced high renewable penetration at 90.5% during the early morning period of 2 September 2026, with combined wind and solar generation exceeding 724 MW. Regional reference prices rose sharply from $2.10/MWh to a peak of $28.88/MWh between 00:05 and 00:20, before declining to $14.95/MWh by 00:35.
Sustained negative pricing in QLD1: $-4/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing at −$4.09/MWh across two intervals during the evening of 1 September 2026, with prices oscillating between negative and near-zero levels. The region had substantial solar generation (approximately 5,359 MW combined) and coal generation (3,077 MW), creating oversupply conditions typical of the shoulder period.
Sustained negative pricing in NSW1: $-4/MWh for 2 intervals, NSW1, negative_price, minor
NSW1 experienced sustained negative pricing of approximately $-4/MWh across two consecutive intervals (23:15 and 23:20 on 2026-09-01), a minor severity event. The region's generation mix was dominated by solar (2,865 MW) and wind (1,097 MW) with substantial black coal baseload (2,802 MW), creating an oversupply condition during the evening shoulder period.
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 $8.352 million per MWh during the settlement period ending 2026-09-01 23:05:00 UTC. The region was operating with substantial hydro and wind generation (approximately 1.1–1.9 GW combined) and no OCGT online, with real-time prices fluctuating between $10.61 and $25.12 across the affected intervals.
WEM price spike in WA: $285/MWh across 1 trading interval, WA1, price_spike, moderate
The WEM WA1 region experienced a moderate price spike to $285.29/MWh in a single trading interval at 19:05 on 1 September 2026, representing a sharp increase from the preceding baseline of approximately $123–129/MWh. The spike was isolated to one interval before prices stabilised.
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.