Frequency control of energy supply is essential for the appliances used by consumers to function effectively. Frequency control services keeps electricity supply across the National Electricity market (NEM) at 50 cycles per second, ie Hertz (Hz). Frequency control is related to, but separate from the ‘energy only’ function of the NEM to supply electricity measured in ‘watts’, more usually for households measured in kilowatts per hour (Kwh). A part of AEMO’s role is to minimise fluctuations about the target of 50 Hz, and this is undertaken through 4 second, 60 second markets and five-minute dispatch intervals.

From a consumer perspective, this consultation is not about the cost of frequency control services, as this is set, but rather about the allocation of these costs and their transparency for consumers.

The guiding principle for allocation of frequency control services has been the notion of “causer pays”, that is the generators or related services, that cause frequency disruption should pay for the corrections through the FCAS system, and in proportion to the amount of variation they produce.

To read more, please click the attached document.


Causer Pays Consultation_Jan2017

Frequency control of energy supply is essential for the appliances used by consumers to function effectively. Frequency control services keeps electricity supply across the National Electricity market (NEM) at 50 cycles per second, ie Hertz (Hz). Frequency control is related to, but separate from the ‘energy only’ function of the NEM to supply electricity measured in ‘watts’, more usually for households measured in kilowatts per hour (Kwh). A part of AEMO’s role is to minimise fluctuations about the target of 50 Hz, and this is undertaken through 4 second, 60 second markets and five-minute dispatch intervals.
From a consumer perspective, this consultation is not about the cost of frequency control services, as this is set, but rather about the allocation of these costs and their transparency for consumers.
The guiding principle for allocation of frequency control services has been the notion of “causer pays”, that is the generators or related services, that cause frequency disruption should pay for the corrections through the FCAS system, and in proportion to the amount of variation they produce

Leave a Reply