Retailer reliability obligation - Interim forecasting best practice guideline

Retailer Reliability Obligation
Date initiated: 
23 May 2019
Effective date: 
20 September 2019
General enquiries - Retailer Reliability Obligation
AER reference: 


The Australian Energy Regulator (AER) is supporting improving reliability in the NEM by implementing the Retailer Reliability Obligation (RRO) alongside the Energy Security Board (ESB).

The ESB was tasked to develop the National Electricity Rules (the Rules) necessary to implement the Obligation. The final Rules came in to effect on 1 July 2019.

As set out in the Rules, the AER is responsible for developing a number of Guidelines on certain aspects of the RRO.


As set out in transitional Rule 11.116.3, the AER must create an Interim Forecasting Best Practice Guidelines (Guideline). The Guideline enables the AER to effectively discharge its responsibility with regard to the RRO, it provides Australian Energy Market Operator (AEMO) with guidance and direction in developing its Reliability Forecast Guidelines and on the preparation of its forecasts, and provides confidence to market participants concerning the quality and transparency of reliability forecasts and the supporting process conducted by AEMO.

On 20 September 2019 we published the Interim Forecasting Best Practice Guidelines and final determination document.

On 25 August 2020, the Interim Forecasting Best Practice Guidelines were superseded by the Forecasting Best Practice Guidelines, which we developed as part of our guidelines to make the ISP actionable.