Pricing Manifest Error
Affected Period
Status
Closed
Category
Balancing
Run Type
Imbalance Pricing
Created
Last Updated
Dear Market Participant,
SEMO have identified two manifest errors in the calculation of the Imbalance Settlement Price.
1. Incorrect Calculation of QBOA for a Unit
There was an error in the calculation of QBOA for a Unit between 04:00 and 16:00 on the 8th October 2019. This impacted the Net Imbalance Volume by approximately 10 MWh for the duration of the impacted period.
SEMO are currently investigating the underlying cause of this issue.
2. Units not being flagged on upward slope of reserve curve, despite reserve constraint binding
This issue has been previously communicated and can be found in the Known Issues Report under ID 6105. The Impacted Imbalance Settlement Periods are as follows:
|
Trading Day |
Imbalance Settlement Periods |
|
8th October 2019 |
06:00 to 06:30 18:00 to 19:00 20:00 to 20:30 21:30 to 22:30 |
|
9th October 2019 |
06:30 to 07:00 08:30 to 10:00 10:30 to 11:00 11:30 to 12:00 |
|
13th October 2019 |
08:30 to 09:30 10:30 to 11:30 13:00 to 13:30 |
|
14th October 2019 |
06:00 to 07:00 10:00 to 10:30 11:00 to 12:00 12:30 to 15:00 16:30 to 17:00 18:30 to 19:00 19:30 to 21:30 |
|
15th October 2019 |
23:00 to 23:30 00:00 to 01:30 |
Kind Regards,
SEMO Trading Operations