The WEM is established under the Electricity Industry (Wholesale Electricity Market) Regulations 2004.
The WEM Regulations cover the responsibilities and functions of the governance bodies including the IMO and the Electricity Review Board, as well as detailing requirements for registration and enforcement of the Wholesale Electricity Market Rules (Market Rules).
The Market Rules govern the operation of the WEM in the South West interconnected system.
The Market Rules detail the roles and functions of the IMO and other governance bodies, and guide the operation of the market including the trading and dispatch of energy, the Reserve Capacity Mechanism and settlement.
The current Market Rules consist of the Wholesale Electricity Market Amending Rules which were gazetted on 19 September 2006, together with all gazetted amendments made by the Minister for Energy prior to 15 December 2006 and amendments made by the IMO since 15 December 2006.
WEM Rules - 1 May 2014 [2.3MB]
WEM Rules - 1 May 2014 [601kB]
WEM Rules Chapter 1 [335kB] - 1 January 2014
WEM Rules Chapter 2 [716kB] - 1 May 2014
WEM Rules Chapter 3 [487kB] - 1 January 2014
WEM Rules Chapter 4 [700kB] - 1 May 2014
WEM Rules Chapter 5 [316kB] - 1 July 2012
WEM Rules Chapter 6 [478kB] - 1 May 2014
WEM Rules Chapter 7 [501kB] - 1 May 2014
WEM Rules Chapter 8 [318kB] - 1 December 2010
WEM Rules Chapter 9 [448kB] - 1 January 2014
WEM Rules Chapter 10 [352kB] - 1 January 2014
WEM Rules Chapter 11 [434kB] - 1 May 2014
WEM Rules Appendices [457kB] - 1 May 2014
WEM_Rules_Unofficial - October 2004 [2.1MB]
WEM_Rules_Unofficial - April 2006 [1.3MB]
WEM_Rules_Unofficial - September 2006 [1.9MB]
WEM_Rule_Unofficial - June 2012 (Pre Balancing Market Commencement) [528kB] - 06 June 2012
WEM_Rules_Unofficial - June 2012 (Pre Balancing Market Commencement) [1.2MB] - 06 June 2012
All Rule Change Proposals progressed since the commencement of the formal Rule Change Process on 15 December 2006 can be found here. Any amendments to the Market Rules prior to this time were progressed by the Public Utilities Office (former Office of Energy) on behalf of the Minister for Energy and can be accessed by contacting the Public Utilities Office.