The Department for Energy Security and Net Zero is today, 30 June 2026, publishing its conclusions on its consultation of 11 June 2026 and re-designating the Virtual WAN Transition Document (SEC Appendix AZ) with changes that support supplier opt-in arrangements for the temporary disablement of 4G communications with VWCHs with the soft-launch firmware version.

The letter, conclusions document and direction can be found on the website and the updated Appendix AZ (Annex 2 to the covering letter) can be found on the website.

SEC v138.0 is now live to implement the associated legal text.

The redlined changes to the documents can be found on the website.

Go Back

More News

6 Aug 2026

Central Products List (CPL) Version 3.082 now published

Version 3.082 of the CPL is now available on the SEC website for download. Change Summary 1 SMETS2 L+G GSME…
Read more
Sign Up to SEC Newsletter

By subscribing you consent to receiving the SEC newsletter.

Contact details provided will only be used to send the newsletter and not for any other purpose.

We use a tracking pixel to track engagements with our newsletter. This collects information on your device, the content you opened, and how many times you opened it. You can turn off this tracking by setting your email client to display emails as ‘text only’

The SEC newsletter will be sent bi-monthly and will provide information on SEC updates and events.