Update - Imbalance Pricing

Affected Period

Status
Closed

Category
Balancing

Run type
Imbalance Pricing

Created
21/12/2018 16:00

Last Updated
22/05/2019 15:42

Update 22/05/2019:

We would like to notify participants that two disputes have been upheld. These disputes cover the following periods:

·  26th April to 2nd May 2019

·  3rd to 9th May 2019

A further dispute has also been received for the period of 10th to 16th May 2019.

Update 07/05/2019:

We would like to notify participants that the dispute covering the period 19th to 25th of April 2019 has been upheld.

A further dispute has also been received for the period of 26th of April to 2nd of  May 2019.


Update 29/04/2019:

We would like to notify participants that disputes have been upheld for the following periods:

·         5th to 11th April 2019

·         12th to 18th April 2019

A further dispute has now also been submitted for the period 19th to 25th April 2019.


Update 12/04/2019:

We would like to notify participants that two disputes have been upheld. These disputes cover the period 22nd to 28th March 2019; and separately 29th March to 4th April 2019.

A further dispute has now also been submitted for the period 5th to 11th April 2019.

Update 03/04/2019:

We would like to notify participants that the disputes covering the period from 1st to 7th of March 2019 and also for the period of 15th to 21st of March 2019 have been upheld. 

A further dispute has now also been submitted for the period of 22nd to 28th of March 2019.

Update 22/03/2019:

We would like to notify participants that a further Dispute on the issue below has been received and upheld covering the period from 8th to 14th of March 2019.

A further dispute has also been received for the period of 15th to 21st of March 2019.

Update 11/03/2019:

We would like to notify participants that the dispute covering the period 21st to 28th of February 2019 has been upheld.

A further dispute has also been received for the period of 1st to 7th of March 2019.


Update 04/03/2019:

We would like to notify participants that the dispute covering the period 14th to 20th of February 2019 has been upheld.

A further dispute has also been received for the period of 21st to 28th of February 2019.


Update 25/02/2019:

We would like to notify participants that the dispute covering the period 7th to 13th of February 2019 has been upheld.

A further dispute has also been received for the period of 14th to 20th of February 2019.


Update 18/02/2019:

We would like to notify participants that the dispute covering the period 31st of January to 6th of February 2019 has been upheld.

A further dispute has also been received for the period of 7th to 13th of February 2019.


Update 13/02/2019:

We would like to notify participants that the dispute covering the period 23rd to 30th of January 2019 has been upheld.

A further dispute has also been received for the period covering 31st of January to 6th of February 2019.


Update 01/02/2019:

We would like to notify participants that the dispute covering the period 16th to the 22nd of January 2019 has been upheld.

A further dispute has now also been received for the period covering 23rd to 30th January 2019.

Update 25/01/2019:

We would like to notify participants that a further Dispute on the issue below has been received and upheld covering the period from 9th to the 15th of January 2019.

A further dispute has now also been submitted for the period covering 16th to 22nd January 2019.

Update 16/01/2019:

We would like to notify participants that a further Dispute on the issue below has been received and upheld covering the period from 1st to the 8th of January 2019.

Update 02/01/2019: 

We would like to notify participants that a further Dispute on the issue below has been received  and upheld covering the period from 13th to the 19th of December 2018. 


Original Message 21/12/2018: 

Dear Market Participants,

As communicated at most recent Market Operator User Group (MOUG), that took place on 11th December 2018, the Market Operator has recently identified two further manifest errors with respect to Imbalance Pricing.

1.       Profiling initial conditions in Quantity Bid Offer Accepted (QBOA) are set to an incorrect level after a unit came back from being dropped due to a different known defect (outlined in previously communicated MarketMessage). Under this scenario QBOAs for subsequent Dispatch Instructions were profiled to that incorrect MW level.

 

2.       Dispatch Instructions for Pumped Storage are occasionally not being processed correctly in QBOA, resulting in the previous instruction applying forward, primarily for desynchronising instructions. Note that a workaround has been deployed operationally to address the issue with desynchronising instructions going forward.

Discussions on these issues are underway with our vendor. SEMO is committed to addressing these issues and re-pricing the impacted periods, if applicable. Further updates will be provided to Participants via the MOUG meetings on the detail of these errors, the progress on the analysis of their materiality and when fixes can be expected.

Pricing Disputes have been received for the dates between the 22nd November to the 12th December and these disputes have been upheld. A full list of Trading Days subject to upheld Pricing Disputes, including further analysis on the aforementioned manifest errors can be found in the attached MOUG slidepack.

Kind Regards,

Market Operations