The MCS Installations Database

Welcome to the MCS Installations Database

The MCS Installations Database, sometimes abbreviated to the MID, is a central online database that holds the information of every MCS certified small scale, low carbon installation in the UK since 2010.

The MID is the most comprehensive reference for small scale, renewable energy installations in the UK. It is unique to MCS.

Access to the MID

Your Certification Body grants login access to the MID. If you require any assistance with using the MID, please contact the MCS Helpdesk Team.

If an MCS Installer has been suspended or removed from the Scheme, their access to the MCS Installation Database (MID) will be revoked and they will not be able to view, generate or make amendments to MCS certificates going forward. Customers who are seeking amendments to their certificates (where the Installer no longer has access to the MID) should be advised to contact the Helpdesk Team.

Installers who are reinstated on the Scheme, will have their access rights returned by the Certification Body.

For any further information or access to MCS Standards and Scheme documents, please visit,