WEM DER Installation

API Reference
Postman Collection

Getting Started

About the API

The DER Register is a database of information about DER devices that is foundational to AEMO’s Distributed Energy Resources (DER) Program. WEM DER Installation v2 APIs enable Western Power to access the system and provide information to the DER Register via APIs.

Getting Access

  1. Register with AEMO to use APIs

  2. Request an AEMO SSL certificate to call the APIs

  3. Request for Client Id and Secret associated with API

  4. Call relevant operation with Client Id and Secret to generate the access token

  5. Use the access token and the SSL certificate to access WEM DER Installation v2 APIs

During formal onboarding, you will first be given access to Pre-Production and must complete your development/testing there prior to getting access to Production.

External Docs

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

  • n/a

API Details

Authentication Methods

This API is using the following Security Policies:

Note: The TLS certificates used to access Pre-Production are different from those used to access Production.


Below are the base URLs used for this API:


Base URL

Data Type

Pre-Production Internet Entry (Main API)


Test Data

Pre-Production Internet Entry (Oauth)


Test Data

Production Internet Entry (Main API)


Live Data

Production Internet Entry (Oauth)


Live Data


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