System strength pricing

Date initiated: 
22 March 2022
Effective date: 
22 March 2022
General enquiries - Pricing, General enquiries - Pricing
AER reference: 


On 21 October 2021, the Australian Energy Market Commission completed the “Efficient management of system strength on the power system” rule change. System strength is a critical service that supports inverter based resources, such as wind and solar generation, and batteries, as they become a key part of the generation mix in the National Electricity Market (NEM).

The rule change seeks a more forward looking, coordinated solution for the supply and demand of system strength in the NEM. A key aspect of this solution is providing connecting parties a choice between remediating their own system strength impact or paying the transmission network a charge for providing system strength services.

We are amending the electricity transmission pricing methodology guidelines to specify:

  • the permitted methodologies for determining the system strength unit price ; and
  • the principles for forecasting system strength revenues.

We are aiming to make these amendments to the pricing methodology guidelines by 31 August 2022.

On 2 June 2022, we published the draft amendments to our transmission pricing methodology guidelines to include how to price system strength services in the NEM.

Have your say

We are seeking submissions from interested stakeholders on the draft amendments to our transmission pricing methodology guidelines by 15 July 2022.