Articles by Paul McArdle

Paul was one of the founders of Global-Roam in February 2000. He is currently the CEO of the company and the principal author of WattClarity. Writing for WattClarity has become a natural extension of his work in understanding the electricity market, enabling him to lead the team in developing better software for clients. Before co-founding the company, Paul worked as a Mechanical Engineer for the Queensland Electricity Commission in the early 1990s. He also gained international experience in Japan, the United States, Canada, the UK, and Argentina as part of his ES Cornwall Memorial Scholarship.


Cost of congestion to energy users

For the EUAA's Members Meeting (held in Brisbane on 24th April 2008), our Managing Director was invited to provide of a précis of the presentation he previously provided at the "QLD Energy" conference (on 12th March 2008). In particular, comments made by Paul with respect...



Links to external reports relating to the blackout

Following from the blackout, several government bodies, and industry organisations completed reviews of the events leading up to the blackout. For completeness, these reports (at least, those we are aware of) have been listed in this article.


March 2008 – Massive Heat-Wave hits SA & Victoria

In March 2008 (after summer had officially ended) South Australians were forced to endure a record 15 straight days of temperatures climbing above 35ºC. Victorians also experienced extreme heat for a number of days. This sweltering weather forced demand through the roof as people used...


Summer 2006-2007 – Miscellaneous Articles

Over the period of summer 2006-07, we prepared a number of articles about other occasions of note in the NEM (in addition to the blackout of 16th January 2007, which has been written about separately).



Analysis of price volatility in the QLD region over summer 2007-08

Our Managing Director was asked to speak at the "Queensland Energy" conference in Brisbane on Wednesday 12th March - specifically addressing the topic of price volatility in the NEM. To provide the basis of discussion during the conference, we focused our analysis solely on Queensland...



Summer 2007-2008 – how did it impact on the NEM?

Summer 2007-08 was really a story of two different summers, with very mild temperatures experienced in the north (resulting in low levels of demand) but with sweltering temperatures in the south (and huge demand as a result). This does not include coverage of the heat...



Drought of 2007

Here’s some articles about the impact of the drought on the NEM – culminating in a stepped change in prices, and changes to dispatch patterns, etc…



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...







16th January 2007 – Bushfires and Victoria’s blackout

Victoria experiences a large blackout in the afternoon and evening of 16 January 2007, when bush fires cause three main transmission lines to trip. This created chaos throughout much of Melbourne, and represented perhaps the most significant stress the NEM had experienced since its inception...


11th January 2007 – first spike in demand above 30,000MW

There was a temperature-driven spike in demand across the NEM later in the week beginning Sunday 7th January - culminating in the summer's first demand peak above 30,000MW (on Thursday 11th January). On this occasion, the spot price spiked above $1000/MWh in Queensland, NSW, Snowy...