Issue 3.0 of the Solar Mounting Product Standard (MCS 012) came into effect on 10 May. As with all MCS Standard updates, the changes had gone through a consultation process and were preceded by a series of communications with MCS product Certification Bodies, manufacturers and the wider industry.
When the changes came into effect on 10 May, the certification of several solar mounting products were withdrawn by the product Certification Bodies. This resulted in the certificate for these products being withdrawn from the MCS Installations Database (MID) and therefore the MCS Product Directory.
We know that this has caused a number of concerns for MCS certified installers who have completed installations with these products since 10 May, and for those who have already purchased these products. Because of this, we have worked closely with the product Certification Bodies to identify an immediate solution.
MCS and product Certification Bodies agree to ‘grace period’
MCS has allowed for a six-month grace period to enable installers to install and commission installations using these products.
This will allow installers to generate installation certificates in the MID using these products.
Installations using these products with a certificate issued on or before 10 November 2025 will be deemed compliant with MCS (providing all other scheme requirements have been met). Installers should note that from 10 November 2025 onwards, the grace period products will not appear in the MID or on the MCS Product Directory, and installers will no longer be able to add these products to installation certificates.
If one of these products was installed whilst it was still certified (prior to 10 May), but an installation certificate has not yet been raised due to the 14-day commissioning window, you will no longer be able to select the product on the MID. In this scenario, you should not use the new grace period product when raising the certificate. Instead, the installer should contact the MCS Helpdesk who can advise on how to add the previously certified product onto the installation certificate.
Which products are affected?
The withdrawal of certificates on 10 May 2025 affects a number of solar mounting kit products that were previously listed on the MCS Product Directory. These products were all certified under MCS 012 by BRE.
These include products from the following manufacturers:
Alumero Systematic Solutions GmbH – including the AS 2.1 Mounting System with Hanger Bolts, Roof Hooks, and Trapezoidal Roof Mounting System
Clenergy Europe Ltd – including the PV-ezRack range such as Klip-Lok Standing Seam Clamps, SolarRoof Pro systems, and Trapezoidal fixings
K2 Solar Mounting Solutions Ltd – including the CrossRail, MiniRail, SolidRail, and SpeedRail systems
Mounting Systems GmbH – including Alpha and Tau ProLine mounting systems for various roof types
Solar Slate Plate Ltd – including the Eric Tile and Solar Slate Plate systems
Wagner Renewables Ltd – specifically the TRIC A On Roof Mounting System
Xiamen Fasten Solar Technology Co., Ltd. (Fastensol) – including the A-SLATE, P-SLATE, and FTH series of roof hooks and racks
Find the full range of products affected and their certification number here.
Next steps
The affected products will be re-added to the MCS Product Directory clearly stating they are in a grace period. This will be indicated with ‘(GRACE PERIOD)’ shown after the certification number and the certification date will show as ‘10/05/2025 to 10/11/2025’. These products will be live on the Product Directory on 16 May.
MCS will continue to work with product Certification Bodies and manufacturers to minimise any disruption to the sector.
If you’ve got any questions, or need any further support, please contact the MCS Helpdesk on 0333 103 8130 or email hello@mcscertified.com.