Interest in rooftop and ground-mounted solar power plants is huge and growing. It is not surprising that more and more applications for photovoltaics are being sought. One of these solutions is façade or wall-mounted photovoltaic power plants, which have been increasing in recent years. They are the ideal solution for buildings that do not have a suitable roof for a conventional rooftop installation, or as an addition to an existing rooftop PV system.
Facade systems are usually installed on a south-facing wall. They can be mounted parallel to the wall or with a slight tilt. However, due to this, they do not have as high a capacity as conventional installations and so it usually does not make sense to mount the modules on a wall other than the south-facing wall. Façade systems generally produce less energy than rooftop and ground-mounted installations. In general, wall-mounted solar panels produce more electricity in the winter months than in the summer. This is because the sun is lower in the sky during this time, so more direct sunlight hits the wall-mounted panels.