Regional Outlook — NSW1: Thursday 21 May 2026

The NSW spot price sits at $134.89/MWh as of 06:25 AEST, with demand at 8,042 MW and climbing into the morning peak. That price marks a notable easing from the volatile 17:00–18:00 AEST window, where intervals repeatedly touched $157–$207/MWh during the evening ramp. The 24-hour price profile shows a clear overnight trough — intervals between 01:00 and 05:00 AEST traded as low as $0.91/MWh on two occasions — before a sharp morning ramp that peaked above $207/MWh at 17:00 AEST. The current level reflects partial demand relief as the early-morning peak builds more gradually than the prior evening spike.

The generation mix at 06:30 AEST is dominated by black coal at 5,630.8 MW, with hydro contributing 1,178.25 MW, wind 692.43 MW, battery discharge 150.19 MW, solar 145.26 MW, and gas OCGT a minimal 16.9 MW. Gas CCGT is offline. Total renewable penetration sits at 27.72%, with wind and hydro carrying the bulk of that share. Carbon intensity is 0.6356 tCO2/MWh — elevated relative to the overnight low of 0.4272 tCO2/MWh recorded around 06:00 AEST, when hydro and wind output was higher relative to a lower demand base. Today's wind potential is rated at 8.2 on average, the strongest in the seven-day outlook, which should support wind output through the day compared to recent sessions.

Predispatch forecasts for the 07:30 AEST half-hour are centred around $124–$135/MWh across the most recent runs, with the 21:30 AEST target period drawing more volatile signals — early forecasts as high as $299.99/MWh have since converged to the $120–$148/MWh range in later runs, suggesting the market has repriced evening risk downward as supply positions clarified. Flexible load operators and battery managers should note the load window data points to overnight prices from 08:30–10:30 AEST (UTC) in the $10–$24/MWh range, consistent with the low-price overnight pattern repeated from the prior day.

One market notice with direct NSW relevance remains active: the South Morang F2 500/330 kV transformer outage in Victoria (constraint set V-SMTX_F_R) is scheduled until 17:00 AEST today, constraining the VIC1–NSW1 interconnector and limiting NSW's import headroom from Victoria. This constraint has been in place since 18 May and its removal this afternoon could shift the NSW-VIC price spread dynamic into the evening. An EMMS datacentre transfer is also scheduled to begin at 18:00 AEST on 26 May, with a one-hour outage window that will intermittently affect FPP delivery and Market Portal access — relevant for settlement and bidding system operators planning for next week.