Regional Outlook — NSW1: Friday 29 May 2026
The NSW spot price sits at $38.51/MWh as of 06:30 AEST, demand at 7,050 MW — a Saturday morning low that sits well below the peaks recorded overnight on the mainland. Over the past 24 hours, pricing told a volatile story: intervals pushed into the $165–$284/MWh range between approximately 07:50–09:25 AEST Friday evening as demand surged above 8,700 MW during the evening peak, before retreating through the night as load fell. The 24-hour average across that window tracks considerably above current levels, confirming the evening premium has fully unwound. At $38.51/MWh, the market is now in a quiet, low-demand Saturday mode.
The current generation mix is dominated by black coal at 4,431 MW, with wind contributing a substantial 1,425 MW, hydro at 210 MW, solar at 47 MW, and battery dispatch at 26 MW. Gas — both OCGT and CCGT — sits at zero. Total generation from wind, hydro, solar, and battery amounts to approximately 1,708 MW, delivering a renewable penetration of 27.82% at this interval. That figure has pulled back from an overnight high of around 44% achieved in the early hours when demand was at its lowest and wind output was strong — the typical Saturday overnight profile. Carbon intensity currently registers 0.6351 tCO2/MWh, up from the overnight trough of around 0.49–0.51 tCO2/MWh, reflecting a higher coal share as wind's relative contribution diminishes against rising morning demand.
Pre-dispatch forecasts for the next trading interval (07:00 AEST) and the 07:30 AEST period point to prices holding in the $38.51–$56.03/MWh range, with the most recent pre-dispatch runs consistent at $38.51/MWh for the 07:00 interval. The load window data signals a material price softening is forecast from approximately 09:30–11:30 AEST, with overnight intervals from 10:00 AEST through to around 13:30 AEST forecast below $12/MWh and some intervals touching negative territory — consistent with strong overnight wind output and low weekend baseload demand. Participants with flexible loads or battery charging schedules should note the extended low-price window forecast from tonight through to the early hours of Sunday.
On market notices, one active NSW1 non-conformance is relevant: NESBESS1 (Neoen's South Australian battery, which has NSW-linked dispatch obligations) was declared non-conforming at 10:40–10:45 AEST Friday at –101 MW. A separate NSW1 notice from Wednesday (unit TALWA1, –60 MW) and a Thursday non-conformance for BW02 (+41 MW) remain listed as active but are historical in nature. The Heywood M1 transformer outage in Victoria — which was constraining VIC-SA and indirectly NSW interconnector flows — was resolved at 19:20 AEST Friday, removing constraint set V-HYTX_M12. Market participants should also be aware of a planned Marketnet firewall maintenance window at AEMO's NSW datacentre today (30 May, 09:30–17:00 AEST), with Lan-to-Lan VPN participants potentially experiencing up to a four-hour connectivity disruption to Marketnet services