Estimation of solar energy potential in East Malaysia by using Satellite Images

Abstract

Solar energy has been identified as one of the most potential alternative energy resources as Malaysia receives abundant sunshine all year long. Even though there are many solar instruments that can be used in measuring solar radiation intensity, the high cost has limited its usage to rich countries. As an alternative, a cheaper method in measuring solar intensity includes use of satellite images.In this study, satellite images are used and compared with the actual readings from solar instruments. The results are then used to estimate solar intensity for other places where solar instrument is not available and finally a map that shows the solar radiation for East Malaysia is developed by using GIS application. The findings show that on average, East Malaysia receive from 2.961 kWj/m2 to 6.157 kWj/m2 in a year. The minimum radiation received is about 0.612 kWj/m2 which occurs in December where else the maximum value is 6.838 kWj/m2 which falls in November. Mapping of solar radiation can indirectly provide us with information on potential areas for solar application and suitable for developing countries which cannot afford to have a complete solar instrument system.