26 Apr '17, 2pm

Solar Power: More than half of utility-scale solar photovoltaic systems track the sun through the day

Solar Power: More than half of utility-scale solar photovoltaic systems track the sun through the day

Solar-tracking technologies that follow the path of the sun across the sky are effective at capturing direct radiation because they can be aimed directly toward the sun. However, these tracking technologies have no benefit when capturing diffuse radiation because diffuse radiation is not concentrated in a certain trackable direction. The eastern U.S. has more average yearly cloud coverage than the western U.S. As a result, the east receives higher proportions of diffuse radiation, reducing the benefits of tracking technologies and leading to a higher percentage of fixed-tilt solar panels. In the western U.S., which receives more direct solar radiation, single-axis PV panels track the sun’s path from east to west, thus capturing more direct radiation than a fixed-axis unit.

Full article: http://www.renewableenergyworld.com/articles/2017/04/sola...

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