The effects of solar radiation on energy conversion efficiency of solar panel in Uyo and Port-Harcourt were investigated and the analysis compared. Solar radiation measurements as well as formal meteorological data were utilized. Data were also recorded from digital instruments used. Graphical analyses were made between solar radiation and current, voltage and efficiency. Results obtained show that solar radiation is directly proportional to current and efficiency but fairly stable with voltage. A comparative analysis show that an average of 87.8Klux of solar radiation 22.4x 10-1 A of current, 8.2V of voltage recorded 96.5% of power efficiency in Uyo. While 67.9 Klux of solar radiation, 15.1x10-1 A of current, and 7.5V of recorded 65.
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