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Impact of Azimuth Angle on Photovoltaic Energy Production: Experimental Analysis in Loja, Ecuador

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  • Angel Correa-Guamán

    (Departamento de Producción, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador)

  • Alex Moreno-Salazar

    (Sección BDC Xtrim, Empresa Dismardis, RGMC+G72, Av. de los Shyris, Quito 170102, Ecuador)

  • Diego Paccha-Soto

    (Departamento de Producción, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador)

  • Ximena Jaramillo-Fierro

    (Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador)

Abstract

Efficient solar energy capture is crucial for renewable energy development, particularly in equatorial regions with consistent solar radiation. This study evaluated the impact of the azimuth angle of the solar panels on photovoltaic energy production in Loja, Ecuador. Three photovoltaic systems with east and west orientations were installed, and data were continuously collected from June 2021 to May 2022. Descriptive and comparative statistical analyses, including one-way ANOVA and Kruskal–Wallis tests, were employed to assess the differences in energy production between the systems. Additionally, an analysis of average hourly energy production was conducted to better understand diurnal variations and their relationship with energy demand. Results showed no significant differences in energy production between east- and west-oriented systems, although east-facing panels showed a slight advantage in certain months, between October and December. Seasonal variations were found to have a greater influence on energy production than orientation, suggesting that climatic factors should be prioritized when designing solar installations in equatorial areas. The findings indicate that azimuth angle is not a decisive factor for optimizing energy efficiency in Loja, Ecuador. Moreover, the diurnal analysis demonstrated a typical daily curve with midday peaks, misaligned with morning and evening demand, which could affect future design strategies.

Suggested Citation

  • Angel Correa-Guamán & Alex Moreno-Salazar & Diego Paccha-Soto & Ximena Jaramillo-Fierro, 2025. "Impact of Azimuth Angle on Photovoltaic Energy Production: Experimental Analysis in Loja, Ecuador," Energies, MDPI, vol. 18(8), pages 1-19, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:8:p:1998-:d:1633748
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    References listed on IDEAS

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