2020 Integrated System Plan (ISP)

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Current status and progress updates

The 2020 ISP is currently under development, with a detailed timeline shown below. The consultation on scenarios, inputs and assumptions was completed in August 2019. The Draft 2020 ISP has now been released, and consultation on this document and on non-network options closed on 21 February 2020 and 13 March 2020 respectively – see details below.

AEMO has completed the initial review of submissions to both the Draft 2020 ISP and Non-network consultations, outlining some of the key changes that will be made to the ISP inputs and assumptions as a result of the consultation feedback in the April progress update. The June progress update includes an explanation of the development stages of Renewable Energy Zones (REZs):

Draft 2020 ISP

The Draft ISP sets out the optimal development path for Australia’s energy future. It aims to ensure Australians enjoy affordable, secure and reliable energy in future and for generations to come. 

The draft, for consultation, builds on the analysis of the inaugural 2018 ISP and follows considerable industry engagement on the design of forecasting and planning scenarios and sensitivities. 

Consultation on the Draft 2020 ISP

AEMO is developing and consulting on the Draft ISP at the same time as the Energy Security Board (ESB) is consulting on the Draft ISP Rules to make the ISP ‘actionable’. The intention is that the 2020 ISP, once finalised, will be deemed to have been prepared, consulted and published in accordance with the new ISP Rules on the date when those rules start. 

In addition, actionable ISP projects will be transitioned to the new regulatory framework, including those that commenced their RIT-T process under the current framework.  AEMO will therefore consult in accordance with the Draft ISP Rules requirements. To aid clarity, the following table summarises the various parallel consultations that occurred concurrently over the period December 2019 to March 2020.

Concurrent consultations December 2019 to March 2020 

Consultation Who Description Open Close
Draft ISP Rules ESB Converting the ISP into Action - Draft changes to the National Electricity Rules.  20-Nov-19 17-Jan-20
Draft ISP  AEMO General comments on the Integrated system plan for the NEM, draft report, including the proposed optimal development path.   12-Dec-19 21-Feb-20
QNI Medium & VNI West - Call for non-network options AEMO Submissions relating to non-network options for the QNI Medium and VNI West actionable ISP projects.   12-Dec-19 13-Mar-20
VNI West PSCR AEMO / TransGrid Project specification consultation report for the Vic-NSW Interconnector West RIT-T.              13-Dec-19 13-Mar-20
Forecasting and planning Inputs and Assumptions  AEMO Forecasting and Planning inputs and assumptions for 2020.              12-Dec-19 7-Feb-20

The consultation on the Draft 2020 ISP closed on 21/2/2020. The submissions can be found on the Draft 2020 ISP consultation web page.

Consultation on non-network options

The consultation on the Non-network options for the 2020 closed on 13th March, 2020. Details (including submissions) are available at the following link:

The ISP Consultation Summary Report covering both network and non-network submissions for the ISP will be released mid-year, along with the Final 2020 ISP.

2020 ISP timeline and opportunities for engagement

AEMO welcomes stakeholder participation and collaboration in the ISP process, and encourages attendance at the webinars and workshops. To register for invitations to upcoming ISP events, please email isp@aemo.com.au with your details including full name, organisation and email address. 

The ISP engagement timeline following the consultation on scenarios, inputs and assumptions is summarised below:

 Event  Date  Status  Related content

Renewable Energy Zones (REZ) briefing

13 August 2019


2019 ISP webinar: Renewable Energy Zones briefing

REZ webinar slides

Preliminary modelling outcomes workshop

10 October 2019


ISP Preliminary outcomes presentation - 10 Oct 2019 (5.63 MB, pdf)

ISP workshop synopsis - 10 Oct 2019 (626 KB, pdf)

Publish Draft ISP

12 December 2019


2020 Draft ISP (3.75 MB)

2020 Draft ISP appendices (14.7 MB)

Consultation workshops on Draft ISP

Brisbane - 3 February 2020

Sydney -  4 February 2020

Melbourne - 5 February 2020


Draft 2020 ISP workshops slides 3-5 Feb 2020

Q&A Stations

Please note that due to the large graphics in these files, they are best viewed by downloading and opening in Adobe reader.

Draft 2020 ISP February 2020 workshops summary

Draft 2020 ISP Webinar


11 February 2020


Draft 2020 ISP webinar slides 11 Feb 2020

Draft 2020 ISP webinar summary - Feb 2020

Formal consultation on Draft ISP

12 December 2019 to 21 February 2020


Draft 2020 ISP consultation  web page

Formal consultation on Draft ISP QNI Medium and VNI West non-network options

12 December 2019 to 13 March 2020


Consultation  on non-network options

ISP Consumer reference group framing

Jun - Aug 2020



ISP Consumer reference group collaboration

September 2020 onwards



Final ISP launch

Mid 2020


Publish final ISP

Mid 2020



2019 scenarios, inputs, assumptions and methodologies

AEMO strives to ensure its planning and forecasting publications are of highest quality, with data that is fit for purpose and industry-reviewed, and processes that are transparent. To build confidence in the forecasts, and help decision makers understand the outcomes, AEMO consults on and publishes its scenarios, inputs, assumptions and methodologies. 

If necessary, confidential information is withheld from public release, but incorporated in the modelling conducted to deliver assessments that are as accurate as possible. 

Consultation is now complete on the scenarios, inputs, assumptions and methodologies to be applied to the 2020 ISP, as completed by the 2019 Planning and Forecasting Consultation on scenarios, inputs and assumptions.

These documents contain key information on conclusion of this consultation:

AEMO’s collection of scenarios, inputs, assumptions and methodologies for use in Forecasting and Planning activities are available at the following link, along with a listing of all of the engagement activities that were carried out in 2019 during the inputs and assumptions consultation, and associated materials

2020 ISP Database

Specific assumptions, methods and supporting materials are added to the ISP Database:

Supporting ISP Insights

An Insights paper was released in July 2019, providing new perspectives and deeper analysis on the important role pumped hydro energy storage (PHES) and strategic transmission developments can play in lowering costs to consumers and increasing the resilience of the National Electricity Market (NEM).

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