On the monthly optimum tilt angle of solar panel for five sites in Malaysia

In this research, an optimization of monthly tilt angle for solar panels for five main sites in Malaysia is conducted. The optimization method is based on the Liu and Jordan model for solar energy incident on a tilt surface. As a result, applying the monthly optimum tilt angle, increases the collected yields of the PV module/array in Kuala Lumpur, Johor Bharu, Ipoh, Kuching and Alor Setar by 5.03%, 5.02%, 5.65%, 7.96% and 6.13%, respectively. Such recommendations help in increasing the productively of PV systems in Malaysia and nearby country.