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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TAS

Constraint EventTASmajor14 Apr 2026, 09:00 am

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

Constraint EventTASmajor14 Apr 2026, 01:20 am

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

Constraint EventTASmajor13 Apr 2026, 07:05 pm

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

high_renewableTASminor13 Apr 2026, 03:30 pm

High renewable penetration in TAS1: 100.0%

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Constraint EventTASmajor12 Apr 2026, 11:30 pm

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

high_renewableTASminor12 Apr 2026, 03:30 pm

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

high_renewableSAminor11 Apr 2026, 05:30 pm

High renewable penetration in SA1: 96.1%

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high_renewableTASminor11 Apr 2026, 03:30 pm

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

Constraint EventNEMmoderate11 Apr 2026, 09:20 am

High-value binding constraint in NEM: F_T+FARE_N-2_TG_R6 ($1096 shadow price)

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high_renewableSAminor10 Apr 2026, 05:00 pm

High renewable penetration in SA1: 95.6%

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high_renewableTASminor10 Apr 2026, 03:30 pm

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

Constraint EventNEMmajor10 Apr 2026, 09:10 am

High-value binding constraint in NEM: C_N_NESBESS_050_L ($7308000 shadow price)

high_renewableTASminor9 Apr 2026, 03:30 pm

High renewable penetration in TAS1: 100.0%

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high_renewableSAminor8 Apr 2026, 11:00 pm

High renewable penetration in SA1: 95.7%

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Constraint EventTASmajor8 Apr 2026, 06:15 pm

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

high_renewableTASminor8 Apr 2026, 03:30 pm

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

Constraint EventTASmajor8 Apr 2026, 01:30 am

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

Constraint EventTASmajor7 Apr 2026, 05:35 pm

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

high_renewableTASminor7 Apr 2026, 03:30 pm

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

high_renewableTASminor6 Apr 2026, 02:00 pm

High renewable penetration in TAS1: 100.0%

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high_renewableTASminor5 Apr 2026, 12:30 pm

High renewable penetration in TAS1: 100.0%

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high_renewableSAminor5 Apr 2026, 12:00 am

High renewable penetration in SA1: 95.0%

Click to expand AI analysis

high_renewableTASminor4 Apr 2026, 01:00 pm

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

high_renewableSAminor3 Apr 2026, 08:30 pm

High renewable penetration in SA1: 95.1%

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high_renewableTASminor3 Apr 2026, 11:30 am

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

high_renewableTASminor2 Apr 2026, 11:30 am

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

Constraint EventTASmajor2 Apr 2026, 05:05 am

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

Constraint EventTASmajor1 Apr 2026, 05:15 pm

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

high_renewableTASminor1 Apr 2026, 11:30 am

High renewable penetration in TAS1: 100.0%

Click to expand AI analysis

Constraint EventNEMmajor31 Mar 2026, 02:55 pm

High-value binding constraint in NEM: F_T+LREG_0050 ($203000 shadow price)

Showing 30 of 72

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Recent Market Events

High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price) — TAS1, constraint_event, major
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price) — TAS1, constraint_event, major
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price) — TAS1, constraint_event, major
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's grid achieved 100% renewable penetration during the early morning period of 13 April 2026, with generation supplied entirely by hydro (approximately 383–444 MW) and wind (approximately 175–197 MW) resources, and gas OCGT units offline. Spot prices remained moderate, ranging between roughly $68 and $86 per MWh, suggesting balanced supply and demand conditions without significant price stress. This is a relatively routine occurrence for Tasmania given its predominantly hydro-based generation fleet.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price) — TAS1, constraint_event, major
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's electricity grid achieved 100% renewable penetration during the early morning period of 12 April 2026, with generation supplied entirely by hydro (approximately 300–318 MW) and wind (approximately 265–268 MW) resources, and no gas-fired generation dispatched. Spot prices were broadly moderate, ranging from around $19 to $61/MWh, with two notable dips at 05:15 and 05:35 AEST suggesting brief periods of surplus generation or dispatch variation.
High renewable penetration in SA1: 96.1% — SA1, high_renewable, minor
South Australia recorded exceptionally high renewable penetration of 96.1% during the early morning period on 11 April 2026, driven almost entirely by wind generation totalling approximately 1,749 MW across multiple wind farms. Spot prices were persistently negative throughout the observed window, ranging from -$3.00/MWh to -$0.09/MWh, consistent with a supply surplus condition. Only a small amount of gas-fired CCGT generation (approximately 84 MW combined) remained online, likely for system security purposes.
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's grid reached 100% renewable penetration during the early morning period of 11 April 2026, driven entirely by hydro and wind generation with no gas-fired output. Prices were volatile across the observed window, including several negative price intervals between approximately 05:25 and 05:45 AEST, before recovering to around $50/MWh. The event is classified as minor severity, consistent with Tasmania's well-established capability to operate on fully renewable generation.
High-value binding constraint in NEM: F_T+FARE_N-2_TG_R6 ($1096 shadow price) — NEM, constraint_event, moderate
A binding network constraint identified as F_T+FARE_N-2_TG_R6 activated in the NEM, reaching a peak shadow price of $1,096.22/MWh before declining through subsequent dispatch intervals to $74.15/MWh. This constraint relates to a Tasmanian N-2 contingency scenario on the Farrell network element, likely limiting transfer capability across a critical transmission corridor. The elevated shadow price indicates AEMO's dispatch engine was significantly constrained in its ability to optimise generation dispatch across the affected region.
High renewable penetration in SA1: 95.6% — SA1, high_renewable, minor
South Australia recorded very high renewable penetration of 95.6% during the early morning period on 10 April 2026, driven almost entirely by wind generation totalling approximately 1,573 MW across the region. Spot prices remained negative throughout the observed interval, ranging from approximately -$3.48/MWh to near zero, consistent with a classic oversupply scenario. Only a small amount of gas-fired combined cycle generation (around 41–43 MW) remained online, likely for system security purposes.
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's TAS1 region achieved 100% renewable penetration during the early morning period of 10 April 2026, with generation supplied entirely by a combination of wind (approximately 278–281 MW) and hydro (approximately 235–273 MW). Wholesale prices remained stable and modest at $20.10/MWh across all observed dispatch intervals, reflecting the low marginal cost of the renewable generation mix. No gas-fired OCGT generation was dispatched during this period.
High-value binding constraint in NEM: C_N_NESBESS_050_L ($7308000 shadow price) — NEM, constraint_event, major
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's grid achieved 100% renewable penetration during the early morning period on 9 April 2026, powered entirely by a combination of hydro and wind generation with no gas-fired generation online. Spot prices remained relatively stable and modest, ranging between approximately $58 and $88/MWh, suggesting demand was well-matched by available renewable supply. This is a routine occurrence for Tasmania given its predominantly hydro-based generation fleet.
High renewable penetration in SA1: 95.7% — SA1, high_renewable, minor
South Australia recorded an exceptionally high renewable penetration of 95.7% during the early afternoon of 8 April 2026, driven almost entirely by wind generation of approximately 967 MW, with minimal contribution from solar and a small amount of gas-fired CCGT generation providing system support. Spot prices were near zero or at floor levels across most of the observed dispatch intervals, with only a brief spike to $5.10/MWh, reflecting the oversupply conditions typical of very high renewable output periods.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price) — TAS1, constraint_event, major
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's TAS1 region achieved 100% renewable generation during the early morning period of 8 April 2026, driven overwhelmingly by hydro generation averaging around 520 MW, supplemented by modest wind output of approximately 4–9 MW. Spot prices remained relatively stable and moderate, ranging from $96.18 to $97.13/MWh, indicating a well-supplied market with no significant price stress despite the full renewable operating condition.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price) — TAS1, constraint_event, major
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price) — TAS1, constraint_event, major
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's grid achieved 100% renewable penetration during the early morning period of 7 April 2026, with all electricity supply drawn entirely from hydro (approximately 282–312 MW) and wind (215–248 MW) generation, and no gas peaking plant dispatched. Spot prices rose moderately across the observed intervals, climbing from $52.52/MWh to $88.16/MWh, which remains within normal operating bounds and was classified as a minor event.
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's electricity grid achieved 100% renewable penetration during the early morning period of 6 April 2026, driven entirely by hydro and wind generation with no gas peaking capacity dispatched. Generation was dominated by hydro output ranging between approximately 341–361 MW, supplemented by wind contributing around 103–121 MW across the observed intervals. Spot prices remained relatively stable and moderate, ranging from $69.16/MWh to $82.44/MWh, reflecting a balanced supply-demand position.
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's grid achieved 100% renewable penetration during the early hours of 5 April 2026 (AEST), with generation supplied entirely by a combination of wind and hydro resources. Total wind output ranged between approximately 137 MW and 159 MW across the period, complemented by hydro generation that peaked at over 333 MW. Spot prices remained relatively moderate, ranging from around $73.76/MWh to $88.12/MWh, consistent with a low-demand overnight period.
High renewable penetration in SA1: 95.0% — SA1, high_renewable, minor
South Australia recorded a high renewable penetration of 95% during the early afternoon of 4 April 2026, driven almost entirely by wind generation of approximately 817 MW with negligible solar output. Spot prices remained relatively modest, ranging between approximately $24 and $45/MWh, with only a brief spike to $44.62/MWh at 13:05 before settling back, suggesting the grid managed the high renewable share without significant stress.
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's grid achieved 100% renewable penetration during the early hours of 4 April 2026, with generation supplied entirely by hydro (approximately 128–145 MW) and wind (approximately 37–46 MW), while gas OCGT units remained offline. Spot prices were relatively moderate, ranging between $55 and $86/MWh across the observation window, suggesting balanced supply and demand conditions without significant stress on the system.
High renewable penetration in SA1: 95.1% — SA1, high_renewable, minor
South Australia's electricity grid reached a high renewable penetration level of 95.1% during the morning of 3 April 2026, driven almost entirely by wind generation of approximately 840–850 MW with negligible solar output. Spot prices remained relatively subdued throughout the period, ranging broadly between $8.51/MWh and $26.46/MWh, with a small amount of gas-fired combined cycle generation (around 42 MW) providing residual balancing support.
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's electricity grid achieved 100% renewable penetration during the early hours of 3 April 2026, with generation supplied entirely by hydro (approximately 223–367 MW) and wind (approximately 69–85 MW) across the observed dispatch intervals. Gas-fired open cycle generation contributed nothing during this period, reflecting Tasmania's strong endowment of dispatchable renewable resources. Spot prices remained relatively stable and moderate, ranging between approximately $50 and $56/MWh, suggesting supply and demand were well balanced.
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania's grid achieved 100% renewable penetration during the early hours of 2 April 2026, driven entirely by hydro and wind generation with no gas peaking plant output. Spot prices declined from a modest $103.64/MWh at 00:05 to stabilise around $70.10/MWh by 00:25–00:30, reflecting comfortable supply conditions. The event is classified as minor severity, consistent with Tasmania's well-established profile as a predominantly renewable grid.
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price) — TAS1, constraint_event, major
High-value binding constraint in TAS1: T_BLINK_TV_NGZ ($7308000 shadow price) — TAS1, constraint_event, major
High renewable penetration in TAS1: 100.0% — TAS1, high_renewable, minor
Tasmania achieved 100% renewable electricity generation during the early hours of 1 April 2026, driven entirely by hydro and wind resources with no gas generation online. Spot prices remained relatively stable and moderate, ranging between approximately $70 and $77/MWh across the observed dispatch intervals. This outcome reflects Tasmania's structural advantage as a predominantly hydro-based system with meaningful wind capacity.
High-value binding constraint in NEM: F_T+LREG_0050 ($203000 shadow price) — NEM, constraint_event, major