AEMO – CER Data Exchange Industry Co-Design

Summary

Need

AEMO’s 2024 Draft Integrated System Plan (ISP) step change scenario forecasts that by 2050 consumer energy resources (CER) in the National Electricity Market (NEM) could reach 86 GW of rooftop solar and 27 GW of flexible demand response from consumer batteries and virtual power plants. However, the Draft 2024 ISP also identifies the risk that CER are not adequately integrated into grid operations.

AEMO and state and federal governments also recognise that CER coordination and integration is not on track to meet the state and federal 2030 targets for decarbonisation of the electricity system, with only a small proportion of CERs registered, visible and able to be coordinated.

The CER Data Exchange will allow multiple industry organisations to share CER related information through a secure digital data exchange to coordinate for power system security and flexibility services, providing greater value to all customers.

Project conclusions

In May 2025, the CER Data Exchange Industry Co-Design Project team completed the co-design phase. The key outcome of the Project was reaching a stakeholder aligned preferred option for the CER Data Exchange. The industry preferred option incorporated feedback provided by stakeholders through three public workshops, submissions to the consultation paper, and significant input from members of the Expert Working Group (EWG).

The Four Pillars of the CER Data Exchange Stakeholder Preferred Options were:

1. AEMO to Own and Operate the CER Data Exchange
2. Leverage foundational capabilities delivered through the Market Interface Technology Enhancement (MITE) Project
3. Development of three Priority Use Cases as Minimal Viable Products:
   1. Broader Access to CER Standing Data
   2. Efficient Sharing of Network Limits
   3. Network Support and Flexibility Capability Discovery
4. Start with the Implementation of the Priority Use Cases, then grow capability.

On 30 April 2025, the CER Data Exchange Industry Co-Design Project team hosted its final public webinar. This session outlined key insights from stakeholder engagement and the evolution of the high-level design. In this webinar, the team summarised and explained the four final reports. The reports document stakeholder feedback, discussions, and recommendations and serve as a guiding reference for future stages of the CER Data Exchange.

• Summary Report – A paper outlining key insights, outcomes and recommendations for establishing a national CER Data Exchange
• High-Level Design – The functional framework and technical capabilities through three priority use cases to establish a national CER Data Exchange.
• Cost Assessment – An overview of the methodology, assumptions and results of the cost assessment to implement the CER Data Exchange.
• Implementation Plan – An implementation roadmap outlining key steps, technical and governance considerations, and timelines to support from planning to execution of the CER Data Exchange.

See AEMO’s CER Data Exchange website page for further details.