Photovoltaic panel courtyard installation construction plan

Should a general contractor install a solar PV system?

A general contractor may face a choice between using an electrical subcontractor or a solar subcontractor to install the PV system. A good solar contractor will have the expertise in solar PV systems plus qualified electricians on staff.

To whom is the photovoltaic (PV) guide applicable?

This guide is applicable to Clients planning or undertaking installation of Photovoltaic (PV) systems on ‘Large Scale’ buildings. These buildings are typically owned by organisations from the public or private sector, such as educational establishments, local government, a local community, or commercial organisations.

How should a PV system be designed & installed?

From the outset, the designer and installer of a PV system must consider the potential hazards carefully, and systematically devise methods to minimise the risks. This will include both mitigating potential hazards present during and after the installation phase.

What guidance is there on the performance of PV systems?

The Good Practice Guide provides some guidance on the performance of PV systems in Section 4 of the updated PV Installers Guide. The PV Specialist should model the system using one of the software simulation programmes available, which have a ‘library’ of modules and inverters and can select the sunlight conditions most representative of the site.

What type of building is suitable for a large scale PV system?

A building suitable for a large scale PV system typically has a south-facing roof or façade area sufficient to site from 200m2to 1500m2 for installing PV panels. This would correspond to an installed ‘Watts Peak’ of 20 to 100kWp depending on the PV technology used.

Can a PV system be installed on a roof?

Nevertheless, it is possible to install PV modules on all roof types. If the roof will need replacing within 5 to 10 years, it should be replaced at the time the PV system is installed to avoid the cost of removing and reinstalling the PV system.