NEMMCO
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The National Electricity Market Management Company Limited (NEMMCO) is the Wholesale Market and Power System Operator for the Australian National Electricity Market (NEM). NEMMCO was established in 1996 to administer and manage the NEM, develop the market and continually improve its efficiency.
The governments of Queensland, New South Wales, the Australian Capital Territory, Victoria, South Australia and Tasmania are members of NEMMCO. Each of these governments nominates a director to the NEMMCO board.
NEMMCO is a company under Corporations law. It operates on a break-even basis by recovering the costs of operating the NEM and running the organisation by levying fees against market participants. The fees are complex, and comprise both fixed and variable components that take into account the type of participant and their share of trade in the market. The structure of fees payable to NEMMCO is determined periodically, while the actual fee levels are set annually.
NEMMCO manages the market and power system from two control centres in different states. Both centres operate around the clock, and are equipped with identical communication and information technology systems. The entire NEM, or individual regions within it, can be operated from either or both centres. This arrangement is a means of ensuring continuous supply despite the risks that natural disasters or other events present, and provides NEMMCO with the flexibility to respond quickly to dramatic changes in the market or the power system.