No, that's the average load at a particular time of day. (Averaged over all days over two years). The peak is about twice that:
South Australia experienced a mild summer with only a few days exceeding 40°C. A relatively short heat wave occurred in late January 2011.
The maximum demand for the year was 3,433 MW, and occurred 4:30 PM (Australian Eastern Standard Time) Monday 31 January 2011 (at a temperature of 42.9°C). A higher maximum might have been expected if the same conditions had occurred later in the week, after an extended hot weather period.
http://www.aemo.com.au/~/media/Files/Other/planning/0400-003...
