NEM Overview: Saturday 6 June 2026
Grid stress sits at 71.6/100 — the standout system metric this morning — with spot prices ranging from $87.24/MWh in Tasmania to $137.19/MWh in Western Australia as of 06:30 AEST. On the NEM's eastern interconnected regions, SA leads at $124.33/MWh with NSW close behind at $122.30/MWh, reflecting winter heating demand across the south-east (current temperatures of 8–10°C in NSW, VIC, and SA). Queensland is the relative outlier at $105.50/MWh, while Victoria sits at $110.50/MWh. The $37/MWh spread between Tasmania and SA is notable given it's a calm Sunday morning — the V-SA interconnector is running at 529 MW toward SA and is binding at its export limit of 533 MW, meaning the link is fully committed and SA has limited further access to Victorian supply. Total NEM-connected demand stands at approximately 20,853 MW across the five eastern regions.
NEM-wide renewable penetration is 36.8% on the gridIQ score, though the per-region picture varies considerably. Tasmania is at 100% renewable (hydro 632.69 MW, wind 464.48 MW against demand of 964 MW), while Victoria's mix is dominated by brown coal at 4,741.66 MW with wind contributing 671.83 MW, yielding a renewable share of just 13.38% and the highest carbon intensity on the grid at 1.0568 tCO2/MWh. NSW renewables sit at 18.91% (1,358 MW combined from wind, solar, hydro, and battery against black coal's 5,394.84 MW). QLD's wind fleet is producing a solid 814.89 MW, but that represents only 15.37% of the region's mix against 5,144.07 MW of black coal. SA's carbon intensity is the lowest of the gas-and-wind regions at 0.4772 tCO2/MWh, with 351.67 MW of gas OCGT and 254.26 MW of CCGT running alongside 93.24 MW of wind and 41 MW of battery discharge — solar output is zero across all regions at this hour, as expected overnight.
On interconnector flows, NSW is exporting 896.75 MW north to Queensland and importing 379 MW from Victoria, net positioning NSW as a transit region this interval. Basslink (T-V-MNSP1) is flat at 0 MW, meaning Tasmania's surplus generation is not flowing to the mainland — worth watching as Tasmanian wind output is strong and the Marinus Link corridor remains unavailable for additional capacity. The binding V-SA link, combined with SA's elevated price at $124.33/MWh, suggests the market is seeing genuine supply tightness in South Australia that the interconnector cannot fully resolve at current limits.
The most operationally relevant active notice is the Koorangie–Wemen 220 kV line outage in Victoria, which returned to service at 19:20 on 5 June, revoking the V-KOWE constraint set — this reduces residual transmission risk on the VIC-SA corridor. Weather outlook for today is broadly benign across the NEM: clear skies in NSW and SA will support the midday solar ramp (NSW solar potential forecast at 19.2 today), which should soften afternoon prices, particularly in