The NEM traded within a broadly moderate range across Saturday, though Tasmania posted the sharpest intraday swing — a 24-hour max of $235/MWh against an average of $78/MWh — driven by a major binding constraint overnight (see NEM Highlight). NSW1 led the mainland at $100/MWh average, with VIC1 close behind at $93/MWh. Morning demand troughs are easing across all regions as of 06:30 AEST; watch the QNI interconnector today — it was carrying 1,003 MW northward into Queensland and sitting just 36 MW below its 1,039 MW import limit, making it the tightest constraint point across the network heading into the weekend.
Tasmania is the standout region over the past 24 hours on two fronts. First, the positive: hydro and wind supplied 100% of Tasmanian demand across six consecutive five-minute intervals during the evening of 27 June, with the regional reference price holding steady at $70.22/MWh throughout. Second, the constraint: a severe binding constraint (T_BLINK_TV_NGZ) registered a shadow price of $7.308 million on the evening of 26 June — an exceptionally high scarcity value that contributed to TAS1's 24-hour price maximum of $235/MWh. Developers and energy managers with Tasmanian exposure should note this constraint remains one to monitor for network flow implications.
Western Australia's wholesale market was comparatively settled on Saturday. WA1 averaged $86/MWh with a 24-hour maximum of just $105/MWh — the tightest price band across all six regions reported. No significant events or constraint activity noted for the period. A quiet session for WA market participants.
LOR conditions: STPASA shows no Lack of Reserve conditions forecast across the NEM in the next 48 hours. Gas hubs: STTM prices firmed slightly at the Brisbane hub — $13