NEM Overview — Tuesday 5 May 2026

NSW leads the NEM on price at $134.88/MWh against a demand of 7,913 MW, with QLD close behind at $130.90/MWh (6,562 MW). SA sits at $122.49/MWh and VIC at $113.76/MWh, while Tasmania is the clear low-price outlier at $88.16/MWh on 1,017 MW demand. The $46.72/MWh spread between NSW and TAS is driving the VIC–NSW interconnector hard, with 813.82 MW flowing north into NSW, and V-SA pushing 374 MW westward into South Australia. The Directlink No. 3 leg outage (constraint N-MBTE_1) continues to restrict the N-Q-MNSP1 interconnector, with only -9 MW flowing on Directlink and the QNI carrying -320 MW south into NSW from Queensland.

NEM-wide renewable penetration sits at 32.1% per the gridIQ score, though the regional picture is mixed. Tasmania is running at 100% renewable (256.6 MW wind, 332.3 MW hydro) and is the sole zero-intensity region at 0 tCO2/MWh. SA's wind fleet is producing 101.3 MW alongside 374 MW of net interconnector import from Victoria, giving it the lowest carbon intensity on the mainland at 0.41 tCO2/MWh. NSW and QLD are coal-dominant this interval — NSW's black coal sits at 5,850.5 MW with wind contributing just 106.2 MW (renewable share 12.8%, intensity 0.77 tCO2/MWh), and QLD is almost entirely black coal at 2,509.1 MW with renewables at 2.5% and intensity of 0.86 tCO2/MWh. Solar contribution is effectively zero across all regions, consistent with this being an overnight/early morning interval.

The standout operational alert for today is a foreseeable AEMO market intervention in SA from 1100 AEST. AEMO issued notice 144048 at 19:30 AEST last night, citing a voltage management issue; if no sufficient market response is received by 1015 AEST, AEMO will issue a direction. SA participants should monitor closely — any direction will trigger administered pricing rules and could sharpen the already active V-SA flow dynamics. Grid stress scores at 82.1/100 NEM-wide, and price stability at 74.6/100, which is consistent with the combination of network constraints, an imminent intervention, and moderate but not extreme prices.

Weather today supports modest renewable output in the afternoon. NSW max of 21.3°C and 14% cloud cover gives reasonable solar potential from mid-morning. SA's avg cloud cover of 60% and wind potential of 8 limits upside from wind today, which is relevant context given the voltage issue — increased wind output would typically help system strength in SA. Tasmania's hydro and wind resources remain ample, though the Basslink (T-V-MNSP1) is sitting at zero flow, meaning Tasmanian surplus is not being exported to Victoria this interval. MSATS will also be offline 10:00–14:00 AEST on 10 May for the scheduled 56.2 release — settlement and B2B functions will be unavailable during that window.