regional nsw — NSW1

The NSW spot price sits at **-$4.88/MWh** at 18:15 AEST, deep in negative territory as solar generation floods the grid against subdued Sunday demand of 5,599 MW. This negative pricing pattern has been persistent through the morning window — prices turned negative around 17:20 AEST and have held below zero since, bottoming near -$10/MWh during peak solar hours earlier this morning. The contrast with the overnight baseline is stark: prices were running $56–$68/MWh through the 10:00–14:00 AEST window (the previous evening peak), meaning the morning solar dump has driven a swing of roughly $70/MWh in under eight hours.

The generation mix is heavily coal-dominated despite the price signal. Black coal contributes **3,211 MW** — the clear baseload anchor — while solar is delivering **259 MW** and wind a negligible **37 MW**. Hydro, gas CCGT, and gas OCGT are all at **0 MW**, correctly sidelined by negative prices. Total renewable penetration sits at just **9.49%** per the latest carbon read, which reflects the still-early solar ramp on a clear morning (cloud cover 0%, solar potential rated at 30.1). Wind potential is effectively zero with wind speed at 2.9 km/h — no meaningful wind uplift is available to extend the renewable window today.

Carbon intensity is **0.7965 tCO2/MWh**, essentially flat versus the overnight range of 0.789–0.797 tCO2/MWh. The brief improvement to 0.727 tCO2/MWh seen at solar peak earlier today (17% renewable penetration) has fully reversed as solar output begins its afternoon decline. With coal locked in as baseload and no gas or hydro on dispatch, intensity is structurally anchored near 0.80 tCO2/MWh outside solar hours. Grid stress scores at **63/100** and carbon intensity score at **58.8/100** reflect this coal-heavy dependency. No market notices are active for NSW1. The afternoon outlook follows a predictable Sunday profile: expect prices to recover from negative into the $36–$57/MWh range as solar fades post-14:00 AEST local time, then step up toward $57–$67/MWh through the evening peak, consistent with the pattern seen in prior evening intervals.