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ELEXON Circulars

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(Showing items 1-10 of 879)

EL02667: Planned downtime required for the June 2017 Release deployment [114.0 Kb] Issue Date: 22 June 2017

There will be a period of planned downtime on the ELEXON Portal from 18:15 (BST) on Wednesday 28 June to 03:00 (BST) on Thursday 29 June 2017.

In conjunction, there will also be a period of National Grid planned downtime on the Market Operation Data Interface System (MODIS), which will take place from 18.15 (BST) on Wednesday 28 June to 04:30 (BST) on Thursday 29 June 2017.

These periods of planned downtime are all required to deploy the June 2017 BSC Release.

EL02666: Information relating to P272 Non-Compliances [147.0 Kb] Issue Date: 22 June 2017

Ofgem attends the Performance Assurance Board (PAB) as an observer, and as such receives data on Suppliers’ performance – including their compliance with P272.
This month the PAB, including Ofgem, will see the final positions of Supplier Migration Updates for P272 as of 1 April 2017 including:

  • Supplier reported non-compliances under Supplier Licence Condition (SLC) 12 (the Supplier Licence obligation to install working remotely configurable metering on Profile Class 5-8 metered sites with effect from 6 April 2014)
  • Suppliers who are non-compliant with the obligations outlined under P272 Mandatory Half-Hourly Settlement for Profile Classes 5-8.

EL02665: BMRS planned downtime on Wednesday 21 to Thursday 22 June 2017 [109.6 Kb] Issue Date: 13 June 2017

There is a period of planned downtime which will affect the Balancing Mechanism Reporting Service (BMRS) from 18:00 (BST) on Wednesday 21 June to 01:40 (BST) on Thursday 22 June 2017.

EL02664: Planned maintenance affecting BSC Central Systems: Saturday 23 June to Sunday 24 June 2017 [109.1 Kb] Issue Date: 12 June 2017

There will be planned maintenance taking place between 23:00 (BST) on Saturday 24 and 05:00 (BST) on Sunday 25 June 2017, which may have an intermittent impact on BSC Central Systems.

EL02663: Re-run of Volume Allocation Run for Settlement Date 5 June 2017 [107.7 Kb] Issue Date: 9 June 2017

Today we have experienced an issue with the Volume Allocation Run (VAR) for the II Settlement Run for Settlement Date 5 June 2017. This VAR was run with data missing for a single Data Aggregator and has since been re-run.

EL02662: Planned MIDP Outage on Tuesday 13 June 2017 – impact on BMRS System Price Calculations [113.6 Kb] Issue Date: 7 June 2017

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 June 2017 between 18:30 (BST) and 23:15 (BST).

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 41-47 (inclusive).

EL02661: Incomplete Confirmation Notices issued for Payment Date 6 June 2017 [104.9 Kb] Issue Date: 7 June 2017

We are aware of an issue with the Confirmation Notices issued today for Payment Date 6 June 2017. The Confirmation Notices do not contain the Default Charges for Payment Date 6 June 2017.

EL02660: Defaulting of Teleswitch files for 3 to 5 June 2017 [110.2 Kb] Issue Date: 6 June 2017

Due to issues with the Central Teleswitch Control Unit (CTCU), no files were received for Saturday 3 and Sunday 4 June 2017. The file for 5 June was received, but cannot be processed as the file for 4 June was missing.

EL02659: Update: Defaulting of Teleswitch file for Settlement Day 30 May 2017 [110.3 Kb] Issue Date: 31 May 2017

Yesterday 30 May 2017 we issued ELEXON Circular EL02658. We advised that the data files received from the Teleswitch Agent relating to 28 and 29 May 2017 contained a number of anomalies in different regions. The issue in the Central Teleswitch Control Unit (CTCU) system has now been fixed but the data for Settlement Day 30 May 2017 is required to be defaulted due to the Supplier Volume Allocation Agent (SVAA) system’s rules.

This system rule is being investigated.

EL02658: Defaulting of Teleswitch file for Settlement Days 28 May 2017 and 29 May 2017 [110.8 Kb] Issue Date: 30 May 2017

No switching data were received on the 28 and 29 May 2017 for South Scotland region (Teleswitch User 13) for two Teleswitch Groups.