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Monday, 22 February 2016

Tracking the sun: trackers for solar power systems

A solar tracker is a device that orientates a PV system, particularly a large installation such as a solar farm, towards the sun in order to enable it to capture more solar energy than it would otherwise do without such a device. In essence, tracking is about minimising the angle of incidence between incoming sunlight and a solar panel array. Solar panels can capture the diffuse part of the sun’s light, in the blue sky which also increases proportionately when it’s cloudy, as well as direct sunlight and solar trackers can increase the amount of solar energy captured. In general, tracking systems can usually capture an additional 50 percent of sunlight in summer and 20 percent in the winter, but this differs according to latitude.

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Energy & Environment Dates 2012