Third article today is a quick one about Market Suspension in South Australia this afternoon.
At 14:21:42 (NEM time) AEMO issued Market Notice 94690 as a ‘Declaration of electricity market suspension’ in the South Australian region:
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MARKET NOTICE
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From : AEMO
To : NEMITWEB1
Creation Date : 18/02/2022 14:21:42
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Notice ID : 94690
Notice Type ID : MARKET SUSPENSION
Notice Type Description : Market suspended in region(s).
Issue Date : 18/02/2022
External Reference : Declaration of electricity market suspension
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Reason :
AEMO ELECTRICITY MARKET NOTICE
Declaration of electricity market suspension
AEMO declares the spot market suspended in South Australia with Market Suspension Schedule Pricing (refer NER clause 3.14.5(b)) from Trading Interval 1425 hrs on 18 February 2022 until further notice.
Dispatch prices for the first one or two dispatch intervals of this market suspension will be reviewed manually.
AEMO ELECTRICITY MARKET NOTICE
Declaration of electricity market suspension
AEMO declares the spot market suspended in South Australia with Market Suspension Schedule Pricing (refer NER clause 3.14.5(b)) from Trading Interval 1420 hrs on 18 February 2022 until further notice.
Dispatch prices for the first one or two dispatch intervals of this market suspension will be reviewed manually.
Manager NEM Real Time Operation
Manager NEM Real Time Operation
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END OF REPORT
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At 15:38:47, Market Notice 94694 followed to announce that this period of Market Suspension would end at 16:10:
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MARKET NOTICE
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From : AEMO
To : NEMITWEB1
Creation Date : 18/02/2022 15:38:47
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Notice ID : 94694
Notice Type ID : MARKET SUSPENSION
Notice Type Description : Market suspended in region(s).
Issue Date : 18/02/2022
External Reference : Declaration of electricity market resumption
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Reason :
AEMO ELECTRICITY MARKET NOTICE
Declaration of electricity market resumption
Refer initial AEMO Electricity Market Notice 94690
AEMO declares that the suspension of the spot market in South Australia will end at 1610 hrs on 18 February 2022.
Relevant Market Notices issued under this suspension:
94690
Manager NEM Real Time Operations
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END OF REPORT
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Here’s a view of what NEMwatch shows at the 16:00 dispatch interval, which should be showing live generation output – but note that:
1) This is republishing the AEMO’s ‘Initial MW’ data;
2) Which presumably is being disrupted by the SCADA outage
3) Which might mean that they are substituting Targets for FinalMW (i.e. assuming all units are following their targets, which does not always happen).
A useful guide to some of the complexities that might arise when this happens were described in a number of articles about what happened on 24th January 2021.
4) So the short story is that it may be an incorrect or incomplete picture from 14:25 to 16:10 NEM time.
One more interesting point in the day!
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