NEM Overview — Thursday 30 April 2026

Spot prices are well-behaved across most of the NEM at 06:25 AEST, with NSW1 at $78.07/MWh and QLD1 at $74.04/MWh sitting in broadly similar territory, while Tasmania is the priciest region at $88/MWh. The standouts are Victoria at $0/MWh and South Australia at -$3/MWh — both driven by strong wind output. Victoria is generating 1,415 MW of wind against relatively modest demand of 4,672 MW, and SA's 988 MW of wind against only 1,428 MW of total demand is pushing prices negative with 99% cloud cover eliminating any solar contribution. The VIC1-NSW1 interconnector is flowing 1,045 MW northward and is binding at its export limit, reflecting the surplus in the south being absorbed by NSW. The NSW1-QLD1 interconnector is flowing 316 MW southward (into NSW) and is also binding, with the QNI capacity constrained by the ongoing Armidale–Sapphire 330 kV line outage, scheduled to remain in place until 17:00 on 2 May.

NEM-wide renewable penetration sits at 36.1% on the gridIQ score, though the regional picture is sharply divergent. SA is at 89.7% renewable with carbon intensity of just 0.05 tCO2/MWh, Tasmania is running 100% renewable (75 MW hydro, 47 MW wind) at 0 tCO2/MWh, and Victoria is at 51.4% renewable. NSW and QLD are anchored by black coal — NSW has 5,095 MW of black coal running against just 322 MW combined wind and solar, producing a carbon intensity of 0.83 tCO2/MWh, while QLD mirrors that at 0.85 tCO2/MWh with 2,313 MW of black coal and near-zero solar given pre-dawn conditions. Grid stress is elevated at 52.1, reflecting the binding interconnector constraints rather than any supply shortage — the 28 April MT PASA confirmed no low reserve conditions across the outlook period.

Two active non-conformance notices are relevant today. Unit BW03 in NSW1 was declared non-conforming this morning (05:10–05:15 AEST, -80 MW) under constraint NC-N_BW03; traders should monitor whether this persists into the morning ramp. The Maryvale Wind Farm unit RYANCWF1 in VIC1 had a brief non-conformance event of +15 MW — that interval has passed but the notice remains active. Looking ahead today, SA faces heavy cloud cover all day (98% average) which will suppress solar completely; wind potential is strong at an average 11 on outlook, so negative or near-zero SA prices are likely to persist through the daylight hours. Victoria's wind outlook is also solid at 7.5 average potential with a max of 25.9°C, which could sustain the $0 price floor into the afternoon unless demand lifts. NSW demand is forecast mild (max 21.9°C), limiting any upward price pressure during the evening peak. Participants should note a DWGM planned outage on 5–6 May affecting gas market interfaces — no impact today, but gas scheduling submissions from Tuesday morning warrant early attention.