EMMS - Portfolio Management System - August 2026

Audience

• Demand Response Service Providers (DRSPs)

• Market customers

• Integrated Resource Providers (IRPs)

Contents

Summary

AEMO Australian Energy Market Operator is enhancing the Portfolio Management System (PMS Portfolio Management System) to improve how National Metering Identifiers (NMIs) are managed during applications. This technical specification introduces the final set of enhancements to PMS. Registered participants do not need to change their systems. This release is implemented on AEMO's side. The changes include:

• Option to automatically remove invalid NMIs from in-flight applications

• enable automatic declassification for all valid groups in a selected portfolio in one step

• Improves application re-upload behaviour

• Improves application export functionality

• Improves performance for large PMS datasets

• Improved table navigation across PMS views