Solar trackers can considerably increase the efficiency of solar panel systems by increasing the energy output by approximately +30% and thus decreasing the price of energy produced. This review is based on 43 years of experience in solar tracker research, development, manufacturing, installation, operation and maintenance. Typical solar trackers for flat plate and low-concentration PV systems are described. Despite the substantial reduction in PV panel prices, horizontal single-axis trackers remain profitable solutions in regions between the tropics because of the high ground cover ratio (GCR) and annual energy gain above +30%. In solar tracking systems, PV panels are exposed to relatively high average temperatures and high levels of average ultraviolet radiation. Therefore, for operation in demanding/hot climates, the best quality PV panels should be used. This is very important because there are many reports on the reduced real lifetime of new PV panels in demanding/tropical climate regions.
V. Poulek (Mon,) studied this question.
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