Regional Outlook — NSW1: Saturday 5 September 2026
NSW spot price sits at $75.41/MWh at 06:30 AEST, having climbed steadily from negative territory overnight (as low as -$11.69/MWh around 03:00-04:00) through a step-change at 04:35 when prices jumped to the $60-90/MWh band as demand ramped from an overnight low near 4,460 MW to 8,096 MW by mid-morning. The last 24 hours show a wide range — sub-zero prices persisted for roughly eight hours overnight on low demand and strong wind output, before the morning ramp pushed prices up over 100-fold from the trough. Current demand of 6,263 MW is off this morning's 8,096 MW peak as the midday trough sets in.
Generation mix at the latest interval is led by black coal at 3,992.9 MW, followed by wind at 1,471.35 MW, hydro at 341.97 MW, solar at 47.96 MW, gas OCGT at 46.61 MW, and battery at 35.41 MW. Renewable penetration sits at 31.95%, down from a peak above 62% overnight when wind generation and low demand combined to push renewables above 60% of supply. Carbon intensity has risen in step with the falling renewable share, now at 0.597 tCO2/MWh, up from an overnight low of 0.333 tCO2/MWh around 03:30 — a near-doubling as coal has picked up the load through the day.
Predispatch forecasts point to a firmer pricing session ahead. NSW is expected to return to negative pricing overnight (-$6.50/MWh forecast through 21:00-04:00 AEST tonight), consistent with the low-demand, high-wind overnight pattern seen today. From 07:00 AEST tomorrow, forecast prices escalate sharply — climbing through $82-108/MWh by mid-morning and peaking near $112/MWh around 11:00 AEST, before easing back to the $70-90/MWh range through the afternoon. Weather outlook shows solar potential improving to 30.6% tomorrow with light wind (7.5%), supporting the low-carbon overnight window but doing little to offset the sharp morning price ramp typical of NSW's demand profile.
On notices, NSW-specific items are largely operational: a completed planned outage on the Dapto-Kangaroo Valley No.18 330kV line (returned to service 16:05 AEST yesterday, associated constraints revoked), and a brief lightning-related reclassification of the Bayswater-Mt Piper 500kV lines as a credible contingency, since cancelled. No active AEMO interventions or directions are currently in force for NSW1 — the SA region intervention event from earlier today was cancelled at 20:00 AEST. Traders should note the SA region has a foreseeable intervention flagged for 11:00 AEST tomorrow (voltage-related), which may have flow-on effects for NSW-SA interconnector scheduling but no direct NSW constraint impact at this stage.