NEM Overview: Thursday 30 July 2026

NEM spot prices sit firm this morning, led by South Australia at $400/MWh — well above the mainland pack — while NSW ($190.04/MWh) and Victoria ($189.48/MWh) trade close together, Tasmania sits at $170.26/MWh, Queensland is the softest mainland region at $164.14/MWh, and WA (separate SWIS market) is at $98.67/MWh. The SA premium reflects tight local conditions: zero solar and negligible wind generation (7.64% renewable penetration in SA1) under heavy cloud cover (98%), forcing reliance on gas OCGT (812.84 MW) and CCGT (484.84 MW) to cover 1,649 MW of demand. NSW demand is the highest in the NEM at 10,047 MW, met predominantly by black coal (7,013 MW) and hydro (1,255 MW), with wind contributing 490 MW.

NEM-wide renewable penetration reads 35.3% on the current market score, though this masks wide regional variance. Tasmania leads at 88.4% renewable share, running almost entirely on hydro (1,333 MW) and wind (64 MW), and carries the lowest carbon intensity of any region at 0.0752 tCO2/MWh. Victoria sits at the other end with just 4.52% renewable penetration this interval — brown coal (4,705 MW) dominates output alongside gas peaking (681 MW) — and correspondingly the highest carbon intensity at 1.096 tCO2/MWh. NSW and Queensland run in between at 20.95% and 16.2% renewable share respectively, with Queensland's 5,811 MW black coal fleet supplemented by 779 MW wind and 386 MW battery output.

Grid stress reads elevated at 58.2 on the composite score, consistent with the active notices book. AEMO has SA under an inter-regional transfer limit variation following the short-notice Belalie–Davenport 275kV line outage, with the V-S-MNSP1 interconnector currently binding at its 178.36 MW export limit. A non-credible contingency at City West substation in SA (transformer T1 and breaker trip) remains logged, though no load shedding was instructed. Forecast LOR1 conditions have been flagged and cancelled multiple times over the past 48 hours for SA, indicating the region's reserve margins are being actively managed as cold, low-wind, high-cloud conditions persist across the state today.

Cold, calm weather is the dominant theme across the southern states this morning — NSW, VIC, SA and TAS are all in the 4–7°C range with heating demand elevated (11–14 range) and minimal wind or solar potential. Solar potential improves into the afternoon in NSW (22.6 avg) and Queensland (18.9 avg), which should ease midday pricing in those regions, but SA's solar outlook stays weak (5.6 avg) today, meaning the current price spread against NSW and VIC is likely to persist through the morning peak before easing as the SA wind/solar profile firms into the weekend.