The NEM's overnight session was defined by a sharp split between regions: Victoria printed a 24h average of just $13/MWh as afternoon solar suppressed mid-session prices, before an evening ramp pushed the spot rate to $70.15/MWh by 06:35 AEST. South Australia moved in the opposite direction — overnight intervals touched as low as -$10.84/MWh during pre-dawn wind generation, before climbing to $103.44/MWh at the morning demand ramp. The Heywood interconnector (V–SA) was flowing at full export capacity of 508 MW, with two binding links and a pair of active network constraints shaping regional spreads heading into the day. Watch SA and TAS pricing through the morning peak window, and monitor whether interconnector constraints ease as demand profiles stabilise.
Tasmania is today's headline region. During the early evening period, the state achieved 100% renewable penetration, with hydro (~399–532 MW) and wind (~68–173 MW) covering the entire load — no gas peakers, no rooftop solar contribution. The 24h average settled at $91/MWh with a session high of $155/MWh, reflecting the price-demand relationship as demand pulled back from an overnight peak toward 1,081 MW by 06:35 AEST at $88.18/MWh. Tasmania's carbon intensity sits at 0 tCO₂/MWh — the lowest recorded on the NEM at this point in the trading day.
The West Australian wholesale market continued to trade at elevated levels, with WA1 posting a 24h average of $115/MWh and a session high of $120/MWh — the highest average across all six regions in this period. The range was comparatively narrow (just $5/MWh between average and maximum), suggesting sustained baseline pricing rather than isolated spike activity. No specific event data is available for today's WEM session beyond price levels; further detail would require AEMO WEM dispatch reporting.
LOR conditions: No Lack of Reserve events are forecast across the NEM in the next 48 hours per STPASA. Gas hubs: