As an early addition to your reading list in your Christmas stocking, on Monday 1st December 2025 the AEMO has added a 154-page offering for some aspects of what we started referring to, almost 10 years ago, as ‘Keeping the Lights on Services’.
Readers here can access the report, and accompanying materials, as follows:
| The Report | Other Materials |
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You can read the 154-page PDF of the AEMO’s ‘2025 Transition Plan for System Security’ here:
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Apart from the 154 page report, there’s some related information that the AEMO links to:
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With respect to this release of this TPSS, readers might like to note the following:
(A) What AEMO notes about the report
There’s a Media Release titled ‘AEMO publishes system security plan’ – in which the AEMO notes:
‘AEMO’s transition planning framework will help navigate transition points that require investment or material changes in power system operations. This includes managing system strength requirements in New South Wales, first identified by AEMO in 2021, as well as minimum system load risks in Queensland and other states from 2026 onwards.
“New investments and reforms are needed to maintain system security in advance of these transition points, with opportunities to co-optimise both reliability and system security investments to help keep costs as low as possible,” Mr Westerman said.
“Industry and governments have actions underway to manage the identified transition points. AEMO will continue to work collaboratively to signal and support the required investments and reforms needed to maintain system security,” he said.
The report also includes AEMO’s annual assessment of system security for each NEM region and identifies investments for transmission network service providers related to inertia, system strength and network support and control ancillary services.’
(B) News Media commentary about the 2025 TPSS
So far today I have come across commentary in a range of places, including the following:
1) There’s been a few media mentions linking this report to comments about (the need to further delay) the looming closure of Eraring Power Station … so much so that I thought it useful to separately call these out here:
2) Separately, we’ll add in other references here, when we see them…
(C) Commentary about the 2025 TPSS from Industry Organisations
So far today I have come across commentary in a range of places, including the following:
1) Will add some, if we see them…
(D) Across the highpoints on Social Media
If we see anything (that we think is) particularly insightful on Social Media (and we have the time!) we’ll look to note it here:
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