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Rule participant classes

The WEM Rules define a number of rule participant classes. The following table summarises these classes and details the corresponding registration requirements. A rule participant can belong to more than one class, except where this is explicitly restricted.

Person Registration requirements
Owns, controls, or operates a transmission or distribution network in the SWIS. Must register as a network operator, except in the following situations (in which case registration is optional):
  1. The person is exempted because system management does not require information about the facility, or
  2. No market participant facilities are connected to it, or
  3. AEMO has exempted the person from the requirement to register.
A person who intends to own, control, or operate a network may also register.
Owns, controls, or operates a generating facility with a rated capacity of greater than
10 MW that is connected to a network in the SWIS.
Must register as a market generator unless AEMO has exempted the person from the requirement to register (in which case registration is optional). A person who intends to own, control, or operate such a generator may also register.
Owns, controls, or operates a generating facility, with a rated capacity of less than or equal to 10 MW, but greater than 0.005 MW, which is connected to a network in the SWIS. Has the option to register as a market generator, but this is not compulsory. A person who intends to own, control, or operate such a generator may also register.
Sells or intends to sell electricity to customers in the SWIS.

Must register as a market customer, unless AEMO has exempted the person from the requirement to register (in which case registration is optional). A person who intends to sell electricity to consumers may also register.

Any other person who sells or purchases electricity, or another service contemplated by the WEM Rules, to or from AEMO. Registration as either a market generator or market customer, as determined by AEMO, is compulsory, unless AEMO has exempted the person from the requirement to register (in which case registration is optional).
System management Automatically registered as System Management.
AEMO Automatically registered as AEMO.
IMO Automatically registered as the IMO.
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