IT system maintenance will take place between 09:30 (BST) and 12:30 (BST) on Thursday 26 April 2018. This is an ELEXON IT systems outage and will not affect the BSC Central Systems.
We have been informed by Electralink that some data flows sent to BSC Parties via the Data Transfer Network (DTN) on Thursday 19 April 2018 were not delivered.
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.
Further to Circulars EL02791 and EL02798, ELEXON has resolved the issue relating to the Generation Capacity (GC) and Demand Capacity (DC) values. Re-declarations can now be processed as required. Any outstanding submissions from 29 March 2018 to 13 April 2018 have been processed with an effective from date of 17 April 2018.
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.
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).
Further to Circular EL02791, ELEXON is still experiencing issues processing re-declarations of Demand Capacity (DC) and Generation (GC) values for Supplier BM Units. Until this issue is resolved, we ask that Parties do not submit BSCP15/4.4 (Mid-Season Changes of Positive and Negative BM Unit Metered Volume Estimates) forms as these cannot be actioned.
IT system maintenance will take place between 12:00 (BST) and 18:00 (BST) on Thursday 12 April 2018 (not 14:00 as previously stated).