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The Wholesale Electricity Market (WEM) Rules govern the operation of the WEM in the South West interconnected system (SWIS). They also guide the operation of the Market including the trading and dispatch of energy.

On 23 November 2016, the Energy Industry (Rule Change Panel) Regulations 2016 were gazetted which established a new Rule Change Panel within the ERA who will be responsible for the WEM and Gas Services Information (GSI) Rules. 

These Rules were previously maintained and developed by the Independent Market Operator (IMO).

The Rule Change Panel will come into effect on 3 April 2017. In the meantime, Rule Changes will be made by the Minister for Energy until 1 July 2017.

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