What is happening?

There will be a period of planned downtime on the BSC Central Systems from 17:57 (BST) on Saturday 28 June 2025 to 01:45 (BST) on Sunday, 29 June 2025.

The outage is required for infrastructure maintenance on the BSC Central Systems including the Energy Contract Volume Aggregation Agent (ECVAA), Central Data Collection Agent (CDCA) and Central Registration Agent (CRA).

How will I be be impacted?

Communication Network:

Market participants FTP access via Low-Grade and High-Grade networks to the Participant FTP Server will be unavailable and it will not be possible to submit or receive any files via FTP during this window.

Elexon Portal:

The Elexon Portal will not be accessible (including submission of REMIT files to ELEXON Portal API) throughout the planned downtime.

 ECVAA:

The ECVAA and ECVAA Web Service (EWS) will be impacted by the planned downtime. Energy Contract Volume Notification (ECVN) and Metered Volume Reallocation Notification (MVRN) to ECVAA will be blocked and the ECVAA Credit Cover Percentage check will also be suspended.

Following completion of the outage, the ECVAA Credit Cover Percentage check will be enabled and submission of ECVNs and MVRNs will be processed as normal.

What do I need to do?

You will need to arrange to submit any notifications, ECVNs or MVRNs before the start of the planned outage. Please do this as early as possible to reduce the risk of missing the Submission Deadline.

 Will I receive ECVAA reports as normal?

No, the ECVAA Forward Contract Report, scheduled to run at 22:00 (BST), will be suspended. The report will instead be run after the planned downtime at 02:00 (BST) on 29 June 2025.

Is there anything else I need to know?

A real-time status update is available via the Service Status webpage.

For more information, please contact us via Elexon Support.