A Systematic Review for Enhancing Solar Photovoltaic System Efficiency by Reducing the Panel Temperature

Renewable energies are significant for energy producers in growing countries. Wind energy, hydropower, geothermal energy, bioenergy, and solar energy are more sensible alternatives than other resources, the answer to the high energy demand. However, Solar energy is considered promising, fast-developed, and cost-efficient compared to other renewable energy sources. Unfortunately, PV Solar efficiency is highly dependent on temperature, and reducing this dependency or its effect on energy production is mandatory. In this article, 43 articles are systematically reviewed and then classified according to their cooling methods, mainly into active and passive methods. In the active methods, the forced air and water as coolants were considered, while the natural air, the heat pipe, and natural water were adopted in the passive methods. Results show a comparison between the presented methods in the durability, maintenance required, efficiency, operation noise, lifespan, capital cost, and consumed energy.