Administered pricing for FCAS in South Australia from 05:20 on Sunday 17th August 2025 (part 1)

A short note this morning following MN128558 from the AEMO as follows:

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MARKET NOTICE
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From :              AEMO
To   :              NEMITWEB1
Creation Date :     17/08/2025     05:10:16

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Notice ID               :         128558
Notice Type ID          :         ADMINISTERED PRICE CAP
Notice Type Description :         Administered price periods declared.
Issue Date              :         17/08/2025
External Reference      :         [EventId:204] AP STARTED for market ancillary services in SA1 at 17 August 2025 0510

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Reason :

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 0510 hrs on 17 August 2025

ADMINISTERED PRICE PERIOD DECLARED in SA1 region.

AEMO has determined that the rolling sum of the uncapped market ancillary Lower 1 Sec services prices for the SA1 region over the previous 2016 trading intervals has exceeded the cumulative price threshold (CPT) of $1,823,600.00.

In accordance with Clause 3.14.2(b) of the National Electricity Rules, AEMO has determined that an administered price period will commence at the trading interval starting 0520 on 17 August 2025 and will continue through to the end of that trading day.

An administered price cap (APC) of 600 $/MWh will apply to all trading intervals during this administered price period. This APC will apply to all market ancillary service prices in the SA1 region.

AEMO will continue to monitor the rolling sum of the uncapped market ancillary service prices and issue further Market Notices as required.

This is an AEMO autogenerated Market Notice.

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END OF REPORT
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Using the (recently upgraded) ‘Trends Engine’ within ez2view, I quickly put together this trend chart to see;

We can see it was the spot price for the lower 1 second commodity (i.e. one side of the FFR commodity) that drove the Cumulative Price for that commodity past the Cumulative Price Threshold … as a result of which Administered Pricing commenced:

• In South Australia (not the other regions)
• For all 10 x FCAS services
• But not ENERGY.