Two-sided sun-tracking panels generate one third more energy

Two-sided sun-tracking panels generate one third more energy

Double-sided solar panels that tilt based on the sun’s position could boost the amount of energy collected. The two approaches existed independently before, but researchers have now looked at the effects of combining them.

Carlos Rodríguez-Gallegos at the Solar Energy Research Institute of Singapore and his colleagues found that double-sided solar panels that track the sun would produce 35 per cent more energy and reduce the average cost of electricity by 16 per cent.

The goal for any solar panel is to absorb as much energy from the sun as possible, says Rodríguez-Gallegos. At present, solar panels around the world are predominantly installed with a fixed orientation, and absorb light only from one side.

The advantage of using two-sided solar panels is that they can also absorb energy that is reflected by the ground onto their rear side, says Rodríguez-Gallegos.

There are two types of solar panels that monitor light. Trackers with one axis track the sun for one day and travel from east to west. Tracers with dual axis often follow the sun throughout the whole year. They change the location depending on the seasons, when the sun rises in summer, and in winter they are lower.

In its study, a number of combinations of different solar panel price in pakistan configurations measured the global energy generation.

They analysed global weather data from NASA’s orbiting clouds and Earth’s instrument for the Radiant Energy System, then measured total energy in various configurations. The team found, when compared with single axis trackers, that double-sided panels generate 35 percent more energy, and 40% longer in combination with double axis trackers.

The group also took account of the costs of these panels, which vary between countries , in terms of material, construction and maintenance.

Combining double-sided panels with one-axis transducers will cut the amount of electricity costs – meaning the user pays the most by 16 percent per kilowatt hour of solar energy produced, says the team.

Combining double-sided panels with one-axis transducers will cut the amount of electricity costs – meaning the user pays the most by 16 percent per kilowatt hour of solar energy produced, says the team.

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