4. Conclusion
This paper has presented the application of Solar Position Algorithm to estimate the position of the sun
in terms of zenith angle and azimuth angle. This algorithm can be utilized for the photovoltaic panels
which distributed remotely and controlled independently by a single computer. As the simulation results
shown, if the location of one PV module is known, then the panel can be controlled to track the sun in the
sky at all time. It is claimed in [2] that the accuracy of estimation is as close as ±0.0003º in period from
year 2000 to 6000. However, for PV Module application, such accuracy is not too significant as long as
the location of the sun can be estimated in the whole year from January to December. This algorithm may
also be applied together with some sensors to track the sun as hybrid system (open-loop and closed-loop
system).