Consultation on minor amendments to the 2021 Inputs, Assumptions and Scenarios, and the ISP Methodology

Market National Electricity Market
StageDiscussion Paper
ConvenorAEMO NEM
Accepting submissions?No
Submissions close15/11/2021

Section 5.22.10(c)(1) of the National Electricity Rules (NER) requires AEMO to consider a range of market benefits as part of preparing an ISP unless it can provide reasons why:

  • A particular class of market benefit is likely not to materially affect the outcome of the assessment of the development path; or
    The estimated cost of undertaking the analysis to quantify the market benefit is likely to be disproportionate given the level of uncertainty regarding future outcomes.
  • These classes of benefits are documented in the NER and further discussed in the Australian Energy Regulator’s Cost benefit analysis guidelines (‘CBA Guidelines’). Competition benefits are one type of market benefit referred to in the NER and CBA Guidelines.

The purpose of this Consultation Paper is to commence a single-stage consultation process in accordance with the Forecasting Best Practice Guidelines on both the IASR and ISP Methodology, specifically in relation to calculating competition benefits in ISP analysis in circumstances where this class of benefit may be material to outcomes. The IASR and ISP Methodology otherwise remain unchanged.

Milestone Date

Release of consultation paper

15 October 2021

Public forum

26 October 2021   Register here

Consumer advocate verbal feedback session

28 October 2021   Register here

Submission close

15 November 2021

Final decision

10 December 2021 (as part of the Draft ISP)

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