Nowadays, installation of solar photovoltaic systems is growing due to awarenessin renewable energy and decreasing the cost of solar panels and batteries. Solartracking system capture 5 to 50 percent more solar radiation compare to fixed tiltedsystem.The main objective of this thesis is to evaluate the performance of various trackingsystem compared with fixed tilted system for in Finnish weather conditions. Thistarget was achieved by simulating and analysing with the help of PVSOL pro andHomer simulation software in different orientations of PV systems: Fixed optimallytilted, horizontal axis east-west, horizontal axis north-south, horizontal axisnorth-south optimally tilted, vertical axis optimally tilted and dual axis system.Three countries having different latitude angle and weather conditions: Lappeenranta(Finland), Kathmandu (Nepal) and Kisumu (Kenya) have been studied.The results show that dual axis system has the best performance. In case of singleaxis tracking system, vertical axis optimally tilted and horizontal axis north southoptimally tilted system have the best performance for Lappeenranta (Finland) havinghigh latitude angle. In case of Kisumu (Kenya), located in equator need not tobe tilted for horizontal axis system.In case of clear sky condition, it is good to track the solar radiation. Nevertheless,during cloudy condition. Tracking system should be also good, because it tries tofind the best position. The ground reflected radiation increase according to tiltedangle. During three-spring months in northern countries like Finland reflectionfrom snow increase the irradiation from 4 to 8 percentage.The installation cost of each solar tracking system is higher than fixed system.Furthermore, operating and maintenance cost would be higher due to moving partslike bearing and motors. The cost of each tracking system is analyzed with1.2€/Wp for a fixed 15 degree tilted system. Levelised cost of electricity was analyzedfor 20, 25 and 30 years lifetime with interest rates upto 10-percent. Additionalcost of each tracking system was calculated in order to maintain same levelisedcost of electricity as fixed 15 degree tilted system. If the additional costs oftracking systems are higher than the calculated value, the system is considered astoo expensive for that location.
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