Pricing Manifest Error

Affected Period

Status
Closed

Category
Balancing

Run Type
Imbalance Pricing

Created
07/11/2019 15:49

Last Updated
06/02/2025 09:01

Dear Market Participant,

SEMO have identified the following manifest errors in the calculation of the Imbalance Settlement Price.

Known Issue #6104

A recurrence of known issue #6104 has impacted the following Imbalance Settlement Periods:

Trading Day	Imbalance Settlement Periods
31st October 2019	06:30 to 09:00
2nd November 2019	07:30 to 09:30
3rd November 2019	07:30 to 09:30

Known Issue #6105

A recurrence of known issue #6105 has impacted on the following Imbalance Settlement Periods:

Trading Day

Imbalance Settlement Periods

31st October 2019

10:00 to 11:00

15:00 to 15:30

16:00 to 16:30

22:30 to 23:00

1st November 2019

00:00 to 00:30

10:30 to 11:30

14:00 to 15:00

16:30 to 17:00

IARAMP Constraint

The IARAMP Operational Constraint was incorrectly applied to Imbalance Pricing between 18:00 on 31st October and 11:30 on 4th November 2019. This resulted in Generator Units being incorrectly System Operator Flagged (i.e. bound by this constraint) between these timeframes.

Known Issues #6104 and #6105 can be tracked via the Known Issues Report .

Kind Regards,
SEMO Trading Operations

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