NEM Overview: Saturday 30 May 2026

Spot prices are running in two distinct tiers across the NEM at 06:25 AEST. Tasmania leads at $81.76/MWh (demand 900 MW), Queensland sits at $72.50/MWh (5,640 MW), and NSW holds at $67.83/MWh (6,780 MW) — all reflecting cool Sunday morning heating demand with temperatures ranging from 6.5°C in Hobart to 12.8°C in Brisbane. Victoria and SA are at the opposite extreme, clearing at $10.50/MWh and $10.68/MWh respectively, driven by strong wind output suppressing marginal costs. The SWIS in WA is notably elevated at $150.40/MWh. The VIC–NSW price spread of ~$57/MWh is being exploited by the VIC1–NSW1 interconnector, which is flowing at its export limit of 977 MW northward — that constraint is binding. Murraylink (V-S-MNSP1) is also binding at its –150 MW limit, flowing from SA into Victoria.

NEM-wide renewable penetration sits at 49.6%. Victoria is the standout wind region at this hour, with 2,753 MW of wind generation against total regional demand of 4,607 MW — wind alone covers roughly 60% of VIC load, and with brown coal contributing 3,193 MW, Victoria is generating a substantial surplus that is flowing north into NSW. SA wind is producing 1,144 MW against demand of just 1,333 MW, delivering a 96.5% renewable share and a near-zero carbon intensity of 0.017 tCO2/MWh. NSW wind contributes 991 MW alongside 4,420 MW of black coal, holding NSW renewable penetration at 27.2% and carbon intensity at 0.641 tCO2/MWh. Queensland's 824 MW of wind and negligible overnight solar leave it at 22.6% renewable and 0.674 tCO2/MWh, the highest carbon intensity on the mainland. Tasmania runs at 100% renewable (440 MW hydro, 420 MW wind) with zero carbon intensity, though it is currently exporting 76 MW to Victoria via Basslink (T-V-MNSP1 flowing southward into VIC at –76 MW).

Grid stress scores 64.5/100, reflecting the binding interconnector constraints rather than any reserve shortfall — the most recent MT PASA notice (19 May) identifies no Low Reserve Conditions across the outlook period. The active market notice of note is the Yallourn–Rowville 7 and 8 220 kV lines in VIC, which were reclassified as a credible contingency event due to lightning activity earlier this morning before being reverted to non-credible at 05:24 AEST following clearance of the storm. Constraint set V-ROYP78_R_N-2 has been revoked. No load shedding occurred and no directions are currently active.

Today's outlook is broadly stable. QLD conditions are clear with a forecast maximum of 20.6°C and strong solar potential (21.7) that will push renewable penetration higher and ease spot prices through the middle of the day. NSW also forecasts clear skies and a maximum of 17.5°C with moderate wind potential of 5.2, suggesting wind will remain active through the day. Price stability scores low at