Regional Outlook — NSW1: Thursday 28 May 2026

The NSW spot price sits at $120.67/MWh as of 06:30 AEST, with total demand at 7,917 MW — well below the overnight peak of 9,831 MW reached around 18:50 AEST. Reviewing the past 24 hours, prices were volatile and elevated through the morning peak, repeatedly touching the $177.69/MWh and $196.37/MWh marks between 16:00 and 18:00 AEST, before easing through the afternoon and into the late evening. The current price represents a meaningful retreat from that peak band, though it remains above the sub-$100/MWh levels seen briefly during the overnight trough (83–98 $/MWh range from roughly 14:30–15:30 AEST).

The generation mix at the latest interval (06:25 AEST) is dominated by black coal at 5,853 MW, with hydro contributing 1,005 MW and wind at 578 MW. Solar output is effectively zero (0.01 MW) given pre-dawn conditions, gas units (both OCGT and CCGT) are offline, and battery dispatch is negligible at 0.21 MW. Total metered generation of approximately 7,437 MW against 7,918 MW demand implies NSW is currently drawing imports from interconnected regions. Renewable penetration sits at 21.29%, down from overnight highs above 37% when hydro was running harder and wind output was stronger. Carbon intensity is 0.6926 tCO2/MWh, the highest reading in the 24-hour window, reflecting the current mix shift toward coal as hydro backs off from its overnight dispatch levels.

Predispatch forecasts for the 07:00 AEST and 07:30 AEST half-hours point to prices in the $129.71–$132.02/MWh range — a modest step up from the current interval, consistent with demand building through the morning as Sydney wakes up. Earlier predispatch runs through midday had the 07:00 AEST period as high as $177.69/MWh, but successive runs have revised this down sharply, suggesting the market sees sufficient supply headroom for now. Load window data signals a significant price softening expected from 09:30–10:30 AEST onwards (forecasts of $85–$89/MWh), likely as demand moderates mid-morning and any wind response emerges. Today's weather profile — 81% cloud cover, 16.9°C, and light heating demand of 1.1 units — limits solar contribution through the morning, with the daily outlook topping at 19.5°C and only modest wind potential of 10.9 on average, so the generation mix is unlikely to shift materially toward renewables during daylight hours today.

One active market notice warrants attention for NSW participants: AEMO issued a non-conformance notice (Notice 144159) against unit NESBESS1 — the Neoen Big Battery Ending Storage System — for a 99 MW non-conformance event between 16:05 and 16:10 AEST yesterday. No constraint set was invoked and the event was brief, but it coincides with the period of peak prices above $177–$196/MWh, relevant context for any battery dispatch analysis. A Marketnet Firewall maintenance window is also scheduled for tomorrow (30 May, 09:00–17:00 AEST) under