Installers are only permitted to retrospectively create certificates for installations that they carried out whilst certified by MCS. If you are approached by a customer who does not have a certificate and their installer (provided they were MCS certified at the time) has ceased trading, please refer them to the MCS helpdesk.
MCS recently updated the Installation Database (MID) making the questions more technology specific, and adding an additional compliance certificate for the heat based technologies. However, these changes will not be compulsory for legacy installations. Therefore for heat pumps, the SPF will automatically be deemed to be 2.5 for legacy installations. However customers will have the option to commission MCS certified installers to recalculate this figure. Installers will need to use the OFGEM SPF calculator which can be found at https://www.ofgem.gov.uk/publications-and-updates/heat-pump-spf-calculation-template
The DRHI rules state that all customers (except those who own a self-build home) must have had a Green Deal assessment to qualify for the RHI. The Ofgem website provides further information on the classifications of self-build and new build homes. https://www.ofgem.gov.uk/key-term-explained/eligible-new-build
Installers may have heard of the Biomass Suppliers List (BSL), and the Biomass Sustainability rules will be introduced in autumn 2014. Customers will need to ensure that any biomass fuel they use after autumn is listed on the BSL. Please visit http://www.gov.uk/register-biomass-supplier for more information.
Installations all need to be meter ready, and it is important for all installers to read the MCS Domestic RHI Metering Guidance Document, found on the MCS website.
More detailed information about the Domestic RHI and the application process can be found on the Ofgem site (www.ofgem.gov.uk)