Electricity > Managing Usage > Critical Peak Demand Tariff



In 2011, AusNet Services introduced our Critical Peak Demand (CPD) tariff as one of our demand management initiatives to improve customer supply reliability and reduce costly investment needed to keep the power on during peak demand days.


The tariff incentivises large business customers (160 plus megawatt hours per annum) to minimise their electricity consumption or seek alternative supply sources between 2pm and 6pm (AEST) or 3pm to 7pm 'daylight saving time' on five CPD days nominated by AusNet Services between 1st December and 31st March each year.


The CPD tariff is part of our standard tariff structure for our large customers. If you are on one of the following tariffs, CPD arrangements apply: NSP56, NSP75, NSP76, NSP77, NSP78, NSP81, NSP82, NSP83, NSP91, NSP94 and NSP95.


You can register to receive notifications of upcoming CPD days, and may wish to save money on your electricity bills by reducing consumption on the five CPD days that are declared.


Potential CPD days:

  • To be determined

Confirmed 2017 CPD days:

  • Thursday, 9 February 2017
  • Monday, 30 January 2017
  • Monday, 16 January 2017
  • Tuesday, 17 January 2017

Previous CPD days









Day 1 07/03/2011  15/02/2012 06/02/2013  19/12/2013  22/01/2015  17/12/2015
Day 2 11/03/2011  16/02/2012 07/02/2013 16/01/2014  11/02/2015 22/02/2016
Day 3 18/03/2011  24/02/2012 18/02/2013 21/03/2014  11/03/2015  23/02/2016
Day 4 24/03/2011  20/03/2012 06/03/2013 27/03/2014  19/03/2015  2/03/2016
Day 5 29/03/2011  30/03/2012 27/03/2013 31/03/2014  31/03/2015  23/03/2016


How the Critical Peak Demand program works


AusNet Services calculates your average peak demand on those five CPD days, which forms the basis of the 'demand critical peak component' of your tariff for the following 12 months.


In general, the tariff is designed to:

  • Give you the opportunity to make an informed decision to minimise electricity use during peak demand periods, therefore, reducing your electricity costs;
  • Decrease demand on the electricity network at peak periods;
  • Reduce the investment in the electricity network to cater for  periods of high demand – thereby reducing the overall cost of operating/maintaining the network; and
  • Improve the reliability and safe supply of the electricity network.

 How CPD days are chosen and communicated

  • AusNet Services will provide advance notice of ‘potential’ CPD days via SMS – potentially seven days in advance – based on the Bureau of Meteorology (BOM) weather forecast for Melbourne.
  • Potential CPD days will be nominated where extreme temperatures are expected or consecutive days of hot weather are forecast.
  • Potential CPD days will not automatically lead to a 'declared' CPD day as forecasts can vary over time.
  • AusNet Services will officially communicate the declaration of CPD day via SMS by 2pm (AEST) or 3pm 'daylight saving time' the day prior and will update our website (above).

 How to register for notifications


To register your business to receive SMS notifications about potential and declared CPD days, please send an SMS to 0418 176 593 with your NMI reference number/s.


Please call us on 1300 360 795 for more information about the CPD tariff program.

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