Comparative Analysis of the Solar Potential of Offshore and Onshore Photovoltaic Power System

Anyanime Tim Umoette, Simeon Ozuomba, Nseobong I. Okpura


In this paper, comparative analyses of performance parameters of onshore and offshore PV system are conducted and the result showed that the offshore PV system has better performance in terms of higher energy yield and performance ratio as well as improved temperature de-rating factor due to it lower cell temperature. The study is conducted for PV array site around Bar Beach in Lagos, Nigeria. Meteorological data from NASA website and PV array with total area of 268 are used for the study. According to the results, the offshore ambient temperature is about 5.57% less than that of onshore, the offshore wind speed is 74.86% more than that of the onshore, whereas, the offshore effective PV cell temperature is 9.96% less than that of the onshore .  The cumulative effect of the differences in atmospheric parameters on the PV cell temperature also resulted to 1.99% higher and better offshore de-rating factor over that of the onshore as well as 1.99% improvement in energy output, the specific energy yield and performance ratio. Evidently, the offshore PV with lower effective cell temperature performed better than the onshore PV system.


Photovoltaic; Standalone PV System; Cell Temperature; Temperature De-rating factor; Onshore PV System; Offshore PV System

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