The increasing demand for energy, the continuous reduction in existing sources of fossil fuels and the growing concern regarding environment pollution, have pushed mankind to explore new technologies for the production of electrical energy using clean, renewable sources, such as solar energy, wind energy, etc. Among the non-conventional, renewable energy sources, solar energy affords great potential for conversion into electric power, able to ensure an important part of the electrical energy needs of the planet.Solar energy is rapidly gaining notoriety as an important means of expanding renewable energy resources. More energy is produced by tracking the solar panel to remain aligned to the sun at a right angle to the rays of light.

Single axis solar tracking system is a large, sophisticated, solar array system with a single-axis motorized tracker. This system is equipped with a computer that knows the movement of the sun relative to location and time of year. It controls the motor so that the solar panels are adjusted every few minutes to receive the maximum amount of direct sunlight throughout the day.

In concentrated solar power applications, single axis trackers have both a horizontal and a vertical axis and thus they can track the sun's apparent motion virtually anywhere in the world.Through the tracking system, the maximum direct sunlight can be achieved and the maximum electricity conversion can be achieved.