(MN1) Notification of Manifest Error
Affected Period
Status
Closed
Category
Balancing
Run type
N/A
Created
26/09/2022 16:17
Last Updated
26/09/2022 16:17
Dear Participant,
The Market
Operator has identified a manifest error in the calculation of the Imbalance
Settlement Price.
Mod_01_20
Incorrect Calculation of PMEA
Mod_01_20 changed
the calculation of the Price Marginal Energy Action (PMEA) in the scenario
where there are no Bid Offer Prices in the direction of the Net Imbalance
Volume (NIV), where the Imbalance Price Flag is equal to 1.
Where there are unflagged
actions on both sides of the pricing stack, PMEA should be set by the maximum price
(positive NIV) or minimum price (negative NIV) of all actions where the
Imbalance Price Flag is equal to 1. Imbalance Pricing is, incorrectly,
setting PMEA as the maximum price or minimum price in the same direction as the
NIV, only.
Further details on
the setting of PMEA can be found in the Trading and Settlement Code, under
section E.3.4.2.
The below
Imbalance Settlement Periods have been identified as being impacted by this
issue.
Trading Day |
Imbalance Settlement Periods |
Manifest Error |
19/09/2022 |
08:00 to 08:30 09:30 to 10:00 |
RPC10 |
21/09/2022 |
01:00 to 01:30 06:30 to 07:30 |
RPC10 |
These dates have
been included in the Balancing Market Repricing Calendar.
Kind regards,
SEMO Trading
Operations