The optimum angle of tilt for PV system is very important for best performance
in the generation of power and other related use of photovoltaic. This work, reviews the best
angle of inclination for a stand-alone photovoltaic panel. The consideration of various studies
has been looked at in line with some models. It was observed that the yearly fixed angle of tilt
is close to or same as the latitude for a given location, although this may not be appropriate for
use in other locations. The annual optimal angle of tilt of some locations were closely related
in value i.e. 20.50o, 20.50o, 21.50o, 20.20o, 21.30o and 22.40o. The best electrical performance
for the PV system was observed to be above 1598kWh/m2 at20o inclination facing south.
Hencethe value of the optimum angle of tilt for best electrical performance of an array of
stand-alone PV system could vary between 0o and 90o depending on the location latitude
