Monthly Archives: June 2007

Background information to the shortage of capacity in winter 2007

Following from the interest generated in the article published in the AFR, we completed some analysis of the trend in IRPM over the history of the NEM up until June 2007.

The results of this analysis revealed that at no time before 2007 had the IRPM even dropped below 12% and that, except for the 2-day period (19th and 20th June) the IRPM had not dropped below 10%.

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Winter 2007 - NEM-wide shortage of capacity

For two remarkable winter evenings in 2007 (19th and 20th June specifically) NEM-Wide Instantaneous Reserve Plant Margin (IRPM) plunged to the lowest levels ever seen in the NEM (a mere 7.6%) as generators were caught short of capacity by a cold snap that hit earlier than expected, whilst plant was still out for maintenance and [...]

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