Analysis and Determination of Solar Potential Using Models Based on Climatic Parameters for the District of San Mateo, Province of Huarochiri, Lima – Peru

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Jhon Américo Rafael Mendoza Andía, Beatriz Luisa Salvador Gutiérrez, Lozano Pedro Sánchez Cortez, Tula Carola Sánchez García, Elizabeth Canales Aybar, Mark López Chumbe


This paper analyzes a procedure to determine the solar potential by means of solar radiation estimation models based on climatic parameters applied at a local level where there are no measurement records. The study was carried out in the district of San Mateo, province of Huarochirí, in the highlands of the Lima region, Peru. Three estimation models were proposed as alternative calculations based on air temperature, in response to the relationship between temperature and radiation and their practical application, including attenuation due to atmospheric effects. The models used were Bristow-Campbell, Hargreaves-Samani and Annandale, of which, the Bristow-Campbell model was selected as it showed better results compared to its peers, obtaining an R2 of 0.818, RMSE of 1.14, MBE of 0.06 as opposed to the R2 of 0.921 and 0.921, RMSE of 1.27 and 1.27, MBE of -0.52 and -0.52 of Hargreaves-Samani and Annandale respectively.To develop the models, a 10-month time series was recorded from the company's own automatic weather station, complementing the information with a 9-year record of historical data extracted from the free NASA application (POWER) for the auxiliary measurement points located throughout the district. The NASA data were validated by correlating them with the data obtained on land, obtaining acceptable results for their application, which allowed generating a data recording grid with the measurement points for performing the simulation in the free software QGIS and obtaining the radiation distribution maps. The average annual radiation was 5.26 kWh/m2day. It is considered that the methodology developed in this research is applicable for estimating the distribution of incident solar radiation at the local level, always considering the conditions of the study area. The global solar radiation values produced in this study can be used in the design and calculation of the performance of solar applications forSan Mateo district.

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