• International Journal of Technology (IJTech)
  • Vol 6, No 2 (2015)

New Approach to Determine Mathematical Equation for Optimum Tilt Angle Of Solar Panel in Indonesia and Its Techno Economy Impact

Adrian Danar Wibisono, Eko Adhi Setiawan

Corresponding email: adrian.danar@gmail.com

Published at : 30 Apr 2015
Volume : IJtech Vol 6, No 2 (2015)
DOI : https://doi.org/10.14716/ijtech.v6i2.988

Cite this article as:

Wibisono, A.D., Setiawan, E.A., 2015. New Approach to Determine Mathematical Equation for Optimum Tilt Angle Of Solar Panel in Indonesia and Its Techno Economy Impact. International Journal of Technology. Volume 6(2), pp. 180-189

Adrian Danar Wibisono Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok 16424, Indonesia
Eko Adhi Setiawan Tropical Renewable Energy Center (TREC), Faculty of Engineering, Universitas Indonesia, Kampus UI Depok 16424, Indonesia
Email to Corresponding Author


The findings in this study refute mathematical equation in determining the optimum angle of the solar panel installation provided by Duffie and Beckmann, Heywood, Lunde, Chinnery, Lof & Tybout, and Garg. Existing research has been determining the optimum tilt angle of the solar panel with a subtropical location perspective. Influence degrees latitude (Y) and longitude (X) to the optimum angle of solar panel installation in the territory of Indonesia represented by the equation -0,0093 X + 1,3042 Y. RMSE value is 1,88 and R2 value is 0,928. In this study, a mathematical equation based on the coordinates of the location to determine the optimum tilt angle of the installation of solar panels in Indonesia and analyze its impact on the technical and economical aspects. The maximum potential economic benefits gained from the installation of solar panels at the optimum angle in Indonesia, assumed Feed in Tariff in Indonesia is US$ 0,25, with a capacity of 1 MW solar and assumed to have a production life of 20 years, are US$ 740.839,66.

Latitude, Longitude, Optimum Tilt Angle, Solar Panel


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