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

841

This Month

191

Most Active Region

TAS

high_renewableSAminor25 Aug 2026, 08:30 am

High renewable penetration in SA1: 97.9%

Click to expand AI analysis

Negative PriceSAminor25 Aug 2026, 04:50 am

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

Click to expand AI analysis

high_renewableTASminor24 Aug 2026, 04:30 pm

High renewable penetration in TAS1: 90.0%

Click to expand AI analysis

Negative PriceNSWminor24 Aug 2026, 03:35 pm

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

Click to expand AI analysis

Negative PriceQLDminor24 Aug 2026, 03:35 pm

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

Click to expand AI analysis

Price SpikeWAmoderate24 Aug 2026, 02:45 pm

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

Click to expand AI analysis

high_renewableSAminor24 Aug 2026, 08:30 am

High renewable penetration in SA1: 95.4%

Click to expand AI analysis

Constraint EventTASmajor24 Aug 2026, 07:45 am

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

Click to expand AI analysis

Constraint EventTASmajor24 Aug 2026, 12:05 am

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

Click to expand AI analysis

high_renewableTASminor23 Aug 2026, 04:30 pm

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

Negative PriceSAminor23 Aug 2026, 04:10 pm

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

Click to expand AI analysis

Negative PriceVICminor23 Aug 2026, 04:10 pm

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

Click to expand AI analysis

Negative PriceQLDminor23 Aug 2026, 01:15 pm

Sustained negative pricing in QLD1: $-9/MWh for 3 intervals

Click to expand AI analysis

Negative PriceTASminor23 Aug 2026, 10:20 am

Sustained negative pricing in TAS1: $-5/MWh for 2 intervals

Click to expand AI analysis

Negative PriceSAminor23 Aug 2026, 10:15 am

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

Click to expand AI analysis

Negative PriceVICminor23 Aug 2026, 10:15 am

Sustained negative pricing in VIC1: $-5/MWh for 2 intervals

Click to expand AI analysis

high_renewableSAminor23 Aug 2026, 08:30 am

High renewable penetration in SA1: 93.1%

Click to expand AI analysis

Negative PriceQLDminor23 Aug 2026, 07:25 am

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

Click to expand AI analysis

Price SpikeWAmoderate22 Aug 2026, 11:35 pm

WEM price spike in WA: $261/MWh across 1 trading interval

Click to expand AI analysis

high_renewableTASminor22 Aug 2026, 04:30 pm

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

Negative PriceVICminor22 Aug 2026, 12:55 pm

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

Click to expand AI analysis

Negative PriceNSWminor22 Aug 2026, 12:55 pm

Sustained negative pricing in NSW1: $-0/MWh for 2 intervals

Click to expand AI analysis

Negative PriceTASminor22 Aug 2026, 12:55 pm

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

Click to expand AI analysis

Constraint EventNEMmajor22 Aug 2026, 07:25 am

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

Click to expand AI analysis

Constraint EventNEMmoderate22 Aug 2026, 01:10 am

High-value binding constraint in NEM: F_T+NIL_ML_RECL_L6 ($2944 shadow price)

Click to expand AI analysis

Constraint EventTASmajor21 Aug 2026, 09:05 pm

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

Click to expand AI analysis

Price SpikeSAmoderate21 Aug 2026, 06:35 pm

Price spike in SA1: $376/MWh across 2 intervals

Click to expand AI analysis

high_renewableTASminor21 Aug 2026, 04:30 pm

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

Constraint EventTASmajor21 Aug 2026, 10:05 am

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

Click to expand AI analysis

Negative PriceQLDminor21 Aug 2026, 09:00 am

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

Click to expand AI analysis

Showing 30 of 841

Real-Time Alerts

Get real-time event alerts

Set up custom triggers for price spikes, negative pricing, and grid constraints. Get notified via email or webhook the moment events are detected.

Start Free Trial

Recent Market Events

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.
Sustained negative pricing in VIC1: $-4/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing during the 05:45–06:20 interval on 23 August 2026, with prices reaching −$3.87/MWh and −$3.50/MWh across two intervals. The negative pricing occurred amid high renewable generation (wind and solar totalling approximately 1,669 MW) and substantial brown coal baseload (3,260 MW), creating oversupply conditions in the region.
Sustained negative pricing in QLD1: $-9/MWh for 3 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing across three consecutive intervals on 23 August 2026 from 02:50 to 03:20, with the minimum price reaching −$8.51/MWh. The event occurred during early morning hours with high solar generation (approximately 1,728–1,897 MW) combined with substantial coal-fired output (3,259 MW), creating an oversupply condition in the region.
Sustained negative pricing in TAS1: $-5/MWh for 2 intervals, TAS1, negative_price, minor
TAS1 experienced sustained negative pricing at approximately −$4.62/MWh across two consecutive intervals (00:20 and 00:25 on 23 August 2026). This minor event occurred during a period of elevated renewable generation, with combined hydro and wind output exceeding 900 MW alongside rooftop PV contribution.
Sustained negative pricing in SA1: $-4/MWh for 2 intervals, SA1, negative_price, minor
SA1 experienced sustained negative pricing of -$4.04/MWh during the 00:20 settlement interval on 23 August 2026, following a price dip to -$1.10/MWh in the preceding interval. The negative pricing occurred during a period of high renewable generation, with wind contributing 663.49 MW and solar contributing 330.05 MW to the regional supply mix.
Sustained negative pricing in VIC1: $-5/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing with a minimum of −$4.67/MWh across two consecutive intervals (00:15 and 00:20 on 23 August 2026). Prices briefly dipped into negative territory before returning to positive levels, indicating a localised oversupply condition in the region.
High renewable penetration in SA1: 93.1%, SA1, high_renewable, minor
South Australia (SA1) experienced high renewable energy penetration of 93.1%, driven predominantly by wind generation at 976.52 MW, with solar contributing 179.28 MW across the region. Regional spot prices remained relatively modest, ranging from $12.42 to $23.24/MWh across the five settlement periods shown, reflecting the abundant renewable supply.
Sustained negative pricing in QLD1: $-2/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing at −$1.92/MWh across 2 intervals on 22 August 2026 at 21:25 and 21:35, following a sharp price collapse from $56.83/MWh earlier in the evening. The region's generation mix was dominated by coal (4,652.6 MW) and solar (1,752.6 MW combined), with wind contributing 763.52 MW, creating a substantial supply surplus relative to demand.
WEM price spike in WA: $261/MWh across 1 trading interval, WA1, price_spike, moderate
The WEM in Western Australia experienced a moderate price spike to $261.13/MWh in the 13:35 trading interval on 22 August 2026, representing a sharp increase from the preceding $146–151/MWh range. This single-interval spike occurred within a generation mix dominated by gas-fired plant (1,290 MW combined CCGT and OCGT) alongside substantial wind generation (353 MW).
High renewable penetration in TAS1: 100.0%, TAS1, high_renewable, minor
Tasmania achieved 100% renewable energy penetration on 22 August 2026, with hydro and wind generation totalling approximately 2,062 MW across the settlement period. Despite high renewable supply, spot prices rose sharply from $24.09/MWh to $75.90/MWh over the five-minute intervals, indicating tightening system conditions rather than oversupply.
Sustained negative pricing in VIC1: $-0/MWh for 2 intervals, VIC1, negative_price, minor
VIC1 experienced sustained negative pricing at $-0.10/MWh across two consecutive intervals (02:55 and 03:05 on 2026-08-22), representing minor negative price events. Prices declined sharply from $5.43/MWh at 02:40 to negative territory, with the region then recovering to slightly positive pricing shortly after.
Sustained negative pricing in NSW1: $-0/MWh for 2 intervals, NSW1, negative_price, minor
NSW1 experienced minor negative pricing with a floor of –$0.11/MWh across two intervals on 22 August 2026 at 02:50–03:05 UTC, following a period of volatile pricing between $29.83 and $1.51/MWh. The negative pricing episodes were preceded by a sharp decline in regional spot prices, suggesting oversupply conditions in the overnight period.
Sustained negative pricing in TAS1: $-0/MWh for 2 intervals, TAS1, negative_price, minor
TAS1 experienced sustained negative pricing at approximately $-0.05 to $-0.10/MWh across two consecutive intervals (03:05–03:10) on 22 August 2026. The event occurred during the early morning low-demand period with high renewable generation from wind (334–465 MW) and hydro (261–317 MW) sources.
High-value binding constraint in NEM: F_T+LREG_0050 ($232000 shadow price), NEM, constraint_event, major
A severe binding constraint (F_T+LREG_0050) emerged in the NEM with an exceptionally high shadow price of $232,000/MWh, indicating significant market scarcity and dispatch inflexibility. This constraint was the dominant binding limitation in the dispatch interval, substantially limiting power flow and creating substantial uplift costs for market participants.
High-value binding constraint in NEM: F_T+NIL_ML_RECL_L6 ($2944 shadow price), NEM, constraint_event, moderate
A high-value binding constraint (F_T+NIL_ML_RECL_L6) with a shadow price of $2,944/MWh emerged in the NEM, significantly restricting dispatch flexibility. This constraint dominated the market pricing signal, with all other active binding constraints carrying substantially lower marginal values (under $9/MWh).
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
A binding constraint with an exceptionally high shadow price of $8.352 million was active in TAS1 during the 21 August 2026 morning period, coinciding with modest regional electricity prices in the $31–$48 range. The constraint remained binding across multiple consecutive settlement intervals whilst Tasmania's generation mix comprised substantial hydro and wind capacity with no gas-fired generation online.
Price spike in SA1: $376/MWh across 2 intervals, SA1, price_spike, moderate
SA1 experienced a moderate price spike reaching $375.79/MWh during the 08:35 interval on 21 August 2026, with prices remaining elevated at $375/MWh in the following interval before declining sharply to $130/MWh. This represented a sharp 2.4× increase from the preceding baseline of approximately $156/MWh.
High renewable penetration in TAS1: 100.0%, TAS1, high_renewable, minor
Tasmania experienced 100% renewable energy penetration on 21 August 2026 during the early morning period, with hydroelectric and wind generation meeting all demand. Regional reference prices rose from $36.19/MWh to a peak of $60.16/MWh across the five-minute settlement intervals, despite the absence of thermal generation.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($8352000 shadow price), TAS1, constraint_event, major
A high-severity binding constraint (T_BLINK_TV_NGZ) in TAS1 reached an extreme shadow price of $8.352 million, coinciding with a sharp spot price increase from $30.18/MWh to $90.42/MWh in the 00:05 settlement period on 21 August 2026. Tasmania's generation mix remained dominated by hydro (955–1226 MW) and wind (369–430 MW) throughout the event window.
Sustained negative pricing in QLD1: $-4/MWh for 2 intervals, QLD1, negative_price, minor
QLD1 experienced sustained negative pricing of approximately −$3.73/MWh during the 23:00–23:05 UTC interval on 20 August 2026, following a brief period of near-zero or low positive prices. The negative pricing occurred during evening peak solar generation (~2,900 MW) combined with steady coal output (~3,140 MW), suggesting an oversupply condition in the region.