ELEXON Circulars

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EL02809 : Fault with National Grid MODIS system today, 3 May 2018

National Grid has informed us they are aware that some Market Participants are unable to send automated European Transparency Regulation (ETR) files to MODIS. Market Participants are receiving a timeout error message when the automated ETR files are being sent. National Grid is investigating this urgently and a further notification will be sent as soon as the issue is resolved.

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EL02803 : BMRS planned downtime on Wednesday 18 April 2018

There will be a period of planned downtime for the Balancing Mechanism Reporting Service (BMRS) between 17:00 (BST) and 17:30 (BST) today, Wednesday 18 April 2018. The planned downtime is required to resolve an issue relating to the processing of System Warnings on BMRS.

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EL02801 : Interim Information (II) Settlement Re-Runs

If a Non Half Hourly Data Aggregator (NHHDA) does not submit data for a Settlement Date, the Supplier Volume Allocation Agent (SVAA) will use default data to avoid zero data entering Settlement.

The SVAA was unable to use default data in Settlement calculations between 29 March 2018 and 5 April 2018 (excluding 3 April) due to a system issue. For these dates, where a NHHDA did not submit data, zero metered volumes were used. In order to correct this issue and avoid any impact on Settlement, Settlement Re-Runs were completed on 13 and 14 April 2018.

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EL02799 : Issue with SVAA Calendar 2018/19

Further to Circular EL02794, the 2018/19 SVAA Calendar was distributed in the D0286 (Data Aggregation and Settlements Timetable) File with an incorrect date range. A corrected D0286 file has been distributed to all Data Aggregators (DA).

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EL02794 : Issue with SVAA Calendar 2018/19

The 2018/19 SVAA Calendar was distributed in the D0286 Data Aggregation and Settlements Timetable File with an incorrect date range, thereby meaning that all Run dates relating to Payment Date 2 May 2018 and beyond were not provided.

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EL02790 : Planned National Grid BM Outage on Tuesday 10 April 2018

We have been notified by National Grid that there will be a Balancing Mechanism (BM) planned outage between 10:10 (BST) and 13:40 (BST) on Tuesday 10 April 2018. Updates will be posted on the System Warning page on the Balancing Mechanism Reporting Service (BMRS) before and after the planned outage.

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EL02786 : BMRS planned downtime: Saturday 24 - Sunday 25 March 2018

There will be a period of planned downtime for the Balancing Mechanism Reporting Service (BMRS) between 23:00 (GMT) on Saturday 24 March and 05:00 (BST) on Sunday 25 March 2018. Parties should be aware that this downtime will also cover the ‘Short’ Clock Change taking place on Sunday 25 March 2018.

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EL02781 : Defaulting of the Teleswitch file for Settlement Day 9 March 2018

On Friday 9 March 2018, we issued ELEXON Circular EL02780.

There has been a communications issue with the Central Teleswitch Control Unit (CTCU), which prevented the out-turn Teleswitch file (D0277) from being created and processed as usual for 9 March 2018.

The Teleswitch Data Services Agent (Energy Networks Association) has now successfully implemented a solution, and the CTCU was fully working on 10 March 2018.

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EL02780 : Defaulting of the Teleswitch file for Settlement Day 8 March 2018

Yesterday, 8 March 2018, we issued ELEXON Circular EL02778. There has been a communications issue with the Central Teleswitch Control Unit (CTCU). The issue has prevented the out-turn Teleswitch file (D0277) from being created and processed as usual for 8 March 2018. A solution has been found by the Teleswitch Data Services Agent (Energy Networks Association), and this is currently being implemented.

 

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EL02778 : Defaulting of the Teleswitch file for Settlement Day 7 March 2018

Yesterday, 7 March 2018, we issued ELEXON Circular EL02776. Communications issues with the Central Teleswitch Control Unit (CTCU) are ongoing. These issues prevented the out-turn Teleswitch file (D0277) from being created and processed as usual and Teleswitch instructions for 7 March 2018 have been defaulted to 26 February 2018.

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EL02777 : Scheduled cutover to ELEXON Primary (DTN) Gateway

Further to ELEXON Circular EL02766 we have scheduled the cutover from our Warm Standby (DTN) Gateway to our Primary (DTN) Gateway between 16:00 (GMT) and 18:00 (GMT) on Thursday 8 March 2018.  Whilst we will work to ensure that no files are affected by this cutover we request that parties do not send files to ELEXON via the DTN during this period.

 

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EL02776 : Defaulting of the Teleswitch file for Settlement Day 6 March 2018

Yesterday, 6 March 2018, we issued ELEXON Circular EL02774. Communications issues with the Central Teleswitch Control Unit (CTCU) are ongoing.  These issues prevented the out-turn Teleswitch file (D0277) from being created and processed as usual and Teleswitch instructions for 6 March 2018 have been defaulted to 26 February 2018.

 

 

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EL02775 : Planned MIDP Outage on Tuesday 13 March 2018 – Impact on BMRS System Price Calculations

ELEXON has been advised by one of the Market Index Data Providers (MIDPs), EPEX SPOT power UK, of a planned outage due to take place on Tuesday 13 March 2018 between 18:40 (GMT) and 21:15 (GMT). This means the Market Index Data used to calculate the Market Index Price will not be provided to BSC Central Services by this MIDP for Settlement Periods 41-42 (inclusive).

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