The ultimate source of much of the world's energy is the sun, which provides the earth with light, heat and radiation. While many technologies derive fuel from one form of solar energy or another, there are also technologies that directly transform the sun's energy into electricity.
The solar cell is a converter which relies upon chemical reactions to generate electricity. To package and frame solar cells, it forms a PV panel. Several solar panels are connected together to form a PV array. These modules generate DC electricity, which varies by the amount of sunlight falling onto the modules. In a typical solar installation connected to the electric utility grid, this DC output is converted into a regulated AC output by using inverter.

Stand-Alone system
A Stand-alone Power System is an off-the-grid electricity system for locations that are not fitted with an electricity distribution system. It was previously called Remote Area Power Supply, as they are most often used in remote locations. The stand alone system includes the battery bank to enable the storage of solar power.

Grid-Connected System
With a grid connected solar power system, you can have solar energy powering your home, school or business easily and economically. The system keeps generating free electricity from the sun for a lifetime with exceptional life expectancy of system components and no batteries. It involves extremely low maintenance.A Grid Connect Solar System appreciates in value and at the same time turns your energy bills into credits.