Photovoltaic (PV) is a method of generating electricity by converting solar radiation into direct current (DC). Solar photovoltaic power generation has long been seen as a clean sustainable energy technology which draws upon the planet’s most plentiful and widely distributed renewable energy source – the sun.
The direct conversion of sunlight to electricity occurs without any moving parts or environmental emissions during operation. It is well proven, as photovoltaic systems have now been used for fifty years in specialized applications, and grid-connected systems have been in use for over twenty years.

A complete solar PV system consists of solar modules connected to an inverter that changes the PV’s direct current (DC) electricity to alternating current (AC) electricity to power your electrical devices and to be compatible with the electric utility grid. Batteries are sometimes included in a system to provide back-up power in case of utility power outages.

Size of solar power plants will depend on your annual consumption of electricity. The other criterion is that you will need shadow free rooftop space for setting up of Solar Power Plant. To setup 1kW of solar power plant we need approx. 100 sq. feet of space.

If there is no available sunlight your solar-energy system will stop working – it simply becomes inactive and the power you use will be provided by the electric grid.

Most solar panels come with a 25 year power output guarantee and are expected to last at least twice that long.

The power output guarantee on the solar panels is provided by the manufacturer of the panels and states that at the end of the 25th year, the solar panel will still produce a minimum of 80% of their original power output.