Getting Started

About the API

The Capacity Auction API is used by facility operators and trading participants to submit and receive data relating to capacity trades and day ahead auction for AEMO’s Capacity Transfer Platform (CTP) and Day-Ahead Auction (DAA) market systems.

Getting Access

To participate in the capacity auction, Trading Participants must register as an auction participant by entering into an Auction Agreement with AEMO.

All registered auction participants can use the capacity auction.

Auction participants are predominantly:

1. Shippers (Trading Participants) registered to participate in the capacity auction.

2. Nominated Agent Participants appointed jointly (such as an unincorporated joint venture) or individually (such as under a corporate group). Appointing members are jointly and severally liable for the acts of the agent. AEMO manages the relationship between appointing and agent participants.

For registration information and application forms, see Register as an Auction Participant in the Capacity Auction

External Docs

Below are a list of external links for additional context to the API or Program:

1. Register as an Auction Participant in the Capacity Auction

2. Guide to Capacity Transfer and Day-Ahead Auction Transactions

3. Capacity Transfer and Auction Procedures

4. Guide to GSH Capacity Auction

5. GSH Future Submission API Endpoints Reference

API Details

Authentication Methods

This API is using the following Security Policies:

• URM username and password (encoded in Base64)

• TLS Certificates

Endpoints

Below are the base URLs used for this API:

Parameters

Paths, Headers, Request Body and Responses can be found in the API Reference (OpenAPI Spec).