Gas supply constraints spill into the NEM – two Victorian gas-fired generators directed offline

To follow the earlier article this morning about AEMO’s ‘Threat to System Security’ Notice in the gas market to do with low storage level at Iona, the AEMO has followed up today by directing two gas-fired generators in Victoria offline … with some information published at 14:20:

AEMO has intervened in the DWGM and directed the curtailment of two gas fired generation facilities in line with previous communications issued for the Iona storage depletion threat to system security event. The direction will remain in effect until:

(a)  It can be demonstrated to AEMO that the participant(s) have sourced gas supply to meet generation demand; or,

(b)  AEMO determines that the threat to system security has ended; or
(c)  AEMO determines that the direction is no longer required to maintain or improve reliability, system security or in the interests of public safety.

AEMO is seeking a market response to a threat to system security for gas days 11/07/2022 to 30/09/2022 due to Iona storage inventory depletion risk to the DTS Total System.’

As I publish this at ~17:35 there are gas-fired units running at Valley Power, Newport, Laverton North and Mortlake in Victoria.

… ‘interesting’ times ahead…



PS more information from AEMO

These two notices from yesterday (Tue 19th July) provide more information:

AEMO Gas Supply Shortfall Outcome Notification – 19 July 2022 AEMO Gas Supply Shortfall Trigger Notification

Not from the following that the volume of gas used for gas-fired generation is three times higher than at the same time in 2021:


This notice is currently on NEMweb here.

This notice was published on NEMweb here on 19th July 2022:


This situation continues to unfold

About the Author

Paul McArdle
One of three founders of Global-Roam back in 2000, Paul has been CEO of the company since that time. As an author on WattClarity, Paul's focus has been to help make the electricity market more understandable.

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