A rooftop photovoltaic power station, or rooftop PV system, is a photovoltaic system that has its electricity-generating solar panels mounted on the rooftop of a residential or commercial building or structure.This can be of two types, Solar Rooftop System with storage facility using battery, and Grid Connected Solar Rooftop System.
In grid connected rooftop or small SPV system, the DC power generated from SPV panel is converted to AC power using power conditioning unit and is fed to the grid either of 33 kV/11 kV three phase lines or of 440/220 Volt three/single phase line depending on the capacity of the system installed at institution/commercial establishment or residential complex and the regulatory framework specified for respective States. These systems generate power during the day time which is utilized fully by powering captive loads and feed excess power to the grid as long as grid is available. In case, where solar power is not sufficient due to cloud cover etc., the captive loads are served by drawing power from the grid.
Nowadays the scarcity for electricity is increasing very quickly; more over the cost is also rising. With solar on your roof, your power bills will be massively reduced because you will need less electricity from the grid. With this we provide a linear power warranty of 25 years, from this you can expect long-term cost savings, and also you avoid the cost of expensive electricity. In future, when your system is producing more electricity than your usage, you can sell the excess power to the grid. The price of electricity will rise in the future so that you will get high income by investing in Solar Energy.
Usually while installing rooftop solars for commercial buildings, we do it in two different ways, Ballasted Racking and Attached Racking. Ballasted Racking uses heavy weights, typically concrete blocks, to anchor PV systems on a flat roof. Some hybrid-ballasted systems use a combination of ballast and roof penetrating anchors to fasten the system to the roof. The number of roof penetrations for these systems usually depends on how much weight the roof can handle in terms of ballast, and how much additional support the PV system will need to meet wind load requirements. Attached Racking uses roof penetrating hardware to mount PV systems on any type of roof. There are many types of attached racking systems for different applications, as shown in the images below. The number of required roof penetrations will depend on the roof structure, PV system design, and local building codes.