Monday 21 September 2026
Trading day 2026-09-21
NSW recorded the highest regional average price at $97.0/MWh
NSW and QLD recorded no negative intervals. SA recorded 14.8 hours of negative prices, representing 61.8 per cent of the day. VIC and TAS recorded 14.0 and 13.7 negative hours respectively.
NSW demand peaked at 8915 MW at 18:05. QLD demand reached 7716 MW at 18:00. VIC demand peaked at 6773 MW at 19:00.
Coal supplied 42.9 per cent of generation, followed by rooftop solar at 18.1 per cent and wind at 17.8 per cent. Batteries discharged 17,808 MWh with a net output of 1044 MWh. Total emissions were 264,971 tonnes of carbon dioxide.
AEMO's notice at 14:40 stated a foreseeable intervention in the SA region. AEMO's notice at 15:28 stated an update to this foreseeable intervention. AEMO's notices at 17:00 stated a direction in the SA region to AGL SA Generation for Torrens Island.
Today · Pre-dispatch forecasts show QLD reaching $319.04/MWh at 19:30. SA is forecast to reach $145.0/MWh at 18:30.
In context · The NEM average of $54.0/MWh was above the seven-day average of $40.0/MWh, ranking second for the week. The NSW average of $97.0/MWh ranked first in its seven-day range of $43.9/MWh to $97.0/MWh.
Prices
Trading day · 04:00 → 04:00 AEST · 30-min average
| Region | Avg | VWAP | Min | Max | Neg | Cap |
|---|---|---|---|---|---|---|
| NSW | $97 | $102 | $42 | $231 | 0 | 0 |
| QLD | $87 | $95 | $7 | $224 | 0 | 0 |
| SA | $42 | $54 | -$14 | $110 | 178 | 0 |
| VIC | $44 | $52 | -$14 | $122 | 168 | 0 |
| TAS | $43 | $46 | -$15 | $109 | 164 | 0 |
Min · Max are 5-minute dispatch extremes; the price chart plots 30-minute averages, so its peak reads lower.
Demand
FCAS
| Service | Cost | Spikes | Peak | When |
|---|---|---|---|---|
| RAISEREG | $4,519 | 0 | $8 | 21 Sept, 06:20 |
| LOWERREG | $1,580 | 0 | $5 | 21 Sept, 17:05 |
| RAISE6SEC | $98 | 0 | $0 | 21 Sept, 06:20 |
| LOWER5MIN | $95 | 0 | $0 | 21 Sept, 14:40 |
| LOWER60SEC | $89 | 0 | $0 | 21 Sept, 14:30 |
| RAISE60SEC | $76 | 0 | $0 | 21 Sept, 05:55 |
| LOWER6SEC | $50 | 0 | $0 | 21 Sept, 14:40 |
| RAISE5MIN | $30 | 0 | $0 | 21 Sept, 06:20 |
| Total | $6,537 | |||
Cost = NSW RRP × cleared MW per 5-min interval.
| Service | Cost | Spikes | Peak | When |
|---|---|---|---|---|
| RAISEREG | $8,375 | 0 | $8 | 21 Sept, 06:20 |
| LOWERREG | $3,898 | 0 | $5 | 21 Sept, 17:05 |
| RAISE6SEC | $248 | 0 | $0 | 21 Sept, 06:20 |
| LOWER60SEC | $240 | 0 | $0 | 21 Sept, 14:30 |
| LOWER5MIN | $178 | 0 | $0 | 21 Sept, 14:40 |
| RAISE60SEC | $152 | 0 | $0 | 21 Sept, 05:55 |
| LOWER6SEC | $88 | 0 | $0 | 21 Sept, 14:40 |
| RAISE5MIN | $42 | 0 | $0 | 21 Sept, 06:20 |
| Total | $13,221 | |||
Cost = QLD RRP × cleared MW per 5-min interval.
| Service | Cost | Spikes | Peak | When |
|---|---|---|---|---|
| RAISEREG | $8,162 | 0 | $8 | 21 Sept, 06:20 |
| LOWERREG | $1,347 | 0 | $5 | 21 Sept, 17:05 |
| LOWER60SEC | $194 | 0 | $0 | 21 Sept, 14:30 |
| RAISE6SEC | $184 | 0 | $0 | 21 Sept, 06:20 |
| RAISE60SEC | $161 | 0 | $0 | 21 Sept, 05:55 |
| LOWER5MIN | $124 | 0 | $0 | 21 Sept, 14:40 |
| RAISE5MIN | $83 | 0 | $0 | 21 Sept, 06:20 |
| LOWER6SEC | $77 | 0 | $0 | 21 Sept, 14:40 |
| Total | $10,331 | |||
Cost = VIC RRP × cleared MW per 5-min interval.
| Service | Cost | Spikes | Peak | When |
|---|---|---|---|---|
| RAISEREG | $3,805 | 0 | $8 | 21 Sept, 06:20 |
| LOWERREG | $2,381 | 0 | $5 | 21 Sept, 17:05 |
| LOWER60SEC | $839 | 0 | $5 | 21 Sept, 16:40 |
| LOWER6SEC | $228 | 0 | $1 | 21 Sept, 16:45 |
| LOWER5MIN | $228 | 0 | $2 | 21 Sept, 16:45 |
| RAISE6SEC | $165 | 0 | $0 | 21 Sept, 06:20 |
| RAISE60SEC | $125 | 0 | $0 | 21 Sept, 05:55 |
| RAISE5MIN | $43 | 0 | $0 | 21 Sept, 06:20 |
| Total | $7,814 | |||
Cost = SA RRP × cleared MW per 5-min interval.
| Service | Cost | Spikes | Peak | When |
|---|---|---|---|---|
| LOWERREG | $25,495 | 0 | $96 | 21 Sept, 11:55 |
| RAISEREG | $10,040 | 0 | $22 | 21 Sept, 17:50 |
| RAISE6SEC | $1,481 | 0 | $29 | 21 Sept, 17:25 |
| RAISE60SEC | $622 | 0 | $0 | 21 Sept, 04:05 |
| LOWER6SEC | $37 | 0 | $1 | 22 Sept, 03:45 |
| LOWER60SEC | $22 | 0 | $0 | 21 Sept, 14:30 |
| RAISE5MIN | $13 | 0 | $0 | 21 Sept, 17:20 |
| LOWER5MIN | $12 | 0 | $0 | 21 Sept, 14:40 |
| Total | $37,722 | |||
Cost = TAS RRP × cleared MW per 5-min interval.
Battery dispatch
Peak moment
Fleet discharged 1,438 MW at 19:00 as NSW spot hit $168/MWh.
Peak moment
Fleet discharged 1,572 MW at 18:00 as QLD spot hit $152/MWh.
Peak moment
Fleet discharged 683 MW at 07:00 as VIC spot hit $26/MWh.
Peak moment
Fleet discharged 549 MW at 06:30 as SA spot hit $40/MWh.
Peak moment
Fleet discharged 3,604 MW at 18:30 as TAS spot hit $90/MWh.
Fleet net dispatch · spot-price overlay · 30-min average
Regional dispatch ranking
| Region | Discharged | Net |
|---|---|---|
#1NSW | 6,719MWh | +504 |
#2QLD | 5,430MWh | -1,432 |
#3VIC | 3,601MWh | +1,426 |
#4SA | 2,058MWh | +546 |
Generation Mix
- Coal46.6% · 99.1 GWh
- Gas2.6% · 5.6 GWh
- Hydro5.3% · 11.4 GWh
- Wind12.9% · 27.4 GWh
- Solar (utility)11.1% · 23.7 GWh
- Solar (rooftop)17.8% · 38.0 GWh
- Battery3.2% · 6.7 GWh
- Other0.4% · 0.9 GWh
- Coal53.2% · 102.4 GWh
- Gas5.0% · 9.6 GWh
- Hydro1.6% · 3.1 GWh
- Wind4.0% · 7.8 GWh
- Solar (utility)12.5% · 24.1 GWh
- Solar (rooftop)20.8% · 40.1 GWh
- Battery2.8% · 5.4 GWh
- Coal44.1% · 65.2 GWh
- Gas1.5% · 2.2 GWh
- Hydro0.8% · 1.2 GWh
- Wind29.2% · 43.1 GWh
- Solar (utility)5.5% · 8.1 GWh
- Solar (rooftop)15.4% · 22.8 GWh
- Battery2.4% · 3.6 GWh
- Other1.0% · 1.4 GWh
- Gas10.8% · 4.6 GWh
- Wind52.8% · 22.7 GWh
- Solar (utility)6.8% · 2.9 GWh
- Solar (rooftop)23.6% · 10.1 GWh
- Battery4.8% · 2.1 GWh
- Other1.3% · 0.5 GWh
- Gas6.4% · 1.7 GWh
- Hydro48.9% · 12.7 GWh
- Wind37.7% · 9.8 GWh
- Solar (rooftop)6.9% · 1.8 GWh
Renewables
- NSW 47.8%
- VIC 53.5%
- QLD 44.1%
- SA 92.3%
- TAS 82.5%
Interconnectors
| Region (proxy) | Net flow | Direction changes | Hours at limit |
|---|---|---|---|
| N-Q-MNSP1 | +16.9 GWh | 5 | — |
| NSW1-QLD1 | −10.1 GWh | 33 | — |
| VIC1-NSW1 | −5.9 GWh | 13 | — |
| V-SA | +4.2 GWh | 23 | — |
| T-V-MNSP1 | −3.0 GWh | 0 | — |
Per-region net of NETINTERCHANGE proxied to a representative interconnector. Full per-interconnector decomposition + hours-at-limit needs DINTERCONNECTOR parsing (follow-up).
Emissions
| NSW | 89.2k tCO₂ | 0.414 tCO₂/MWh |
| QLD | 94.1k tCO₂ | 0.479 tCO₂/MWh |
| SA | 2.3k tCO₂ | 0.053 tCO₂/MWh |
| VIC | 78.3k tCO₂ | 0.532 tCO₂/MWh |
| TAS | 1.0k tCO₂ | 0.040 tCO₂/MWh |