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SA Power Networks is inviting expressions of interest in the following open tenders. For more information, read the tender document and complete the process for expressing interest.

Open calls for expression of interest

There are no current open calls for expressions of interest. Check back on this page for future opportunities.

Completed calls for expressions of interest

Note: Expressions of interest closed 19 September 2022

Call for Expression of Interest: Emergency Under Frequency Response (EUFR) in SA


SA Power Networks is collaborating with AEMO and ElectraNet to define a new service in South Australia: Emergency Under Frequency Response. This service aims to assist in the management of rare, extreme under-frequency events that are traditionally managed with Under Frequency Load Shedding (UFLS). In periods of low operational demand, the availability of traditional UFLS is significantly reduced, so SA Power Networks is seeking complementary services from any proponents that can cost-effectively deliver additional generation increase or load reduction to improve management of these rare events. This includes rapid services (delivered in 200-500ms following a rapid drop in frequency below 49Hz), as well as slower services to assist frequency recovery in the subsequent minutes.

SA Power Networks is seeking Expressions of Interests (EOIs) from potential EUFR providers to tender their capabilities in contributing to the resolution of the UFLS shortfalls, where considered technically and economically feasible. EOI must be submitted in accordance with the EOI by 5:00pm ACST on 19 September 2022.

Submission details 

All Expressions of Interests submissions detailing the proposed resources and pricing information must be submitted to SA Power Networks via email to Please note the email size needs to be less than 10MB.

Key dates

Expressions of interest open: 29 July 2022
Expressions of interest close: closed 19 September 2022.


Following completion of this EOI process, a Request for Proposal is expected to commence in Q4 2022. 

This webpage will be updated if addenda to the EOI are issued. It is suggested that proponents should regularly check this webpage to ensure that they have access to the most up-to-date information. 

Contact for more information

All communication (including any request for additional information) concerning this EUFR Expression of Interest must be made in writing via email to, addressed to the following persons:

  • Commercial: Karl Garda
  • Technical: Alexander Ward 

All reasonable endeavours will be made to respond to enquiries in writing within 24 hours from receipt of email.

Please note that answers to clarification questions will be shared with all tendering parties. Should you wish to keep your question confidential, you must mark the question as such.