More high temperatures in South Australia and Victoria this afternoon have driven the demand and the spot price high.
AEMO issued a market notice forecasting a Lack Of Reserve (LOR) 1 in SA at 5:31 this morning (see the notice here).
At 12:08 AEMO declared an actual LOR1 condition for SA, expected to continue until 17:00 (see the notice here). By 12:40 the price had increased to $500/MWh:
At 13:15 the price jumped to $9999, and the SA demand continued to rise:
At 15:30 the price in Victoria also jumped up over $9000/MWh. The tight supply/demand balance in VIC and SA can be seen in the low (10%) Instantaneous Reserve Plant Margin (IRPM) of the VIC + SA “economic island” in this NEM-Watch screenshot:
By 16:25 SA had hit VOLL and the IRPM in SA had dropped to 0% with only 7MW of available generation unused. The demand (3133MW) was just 214MW short of the peak demand for the region: