Environmental and Economical Assessment of Launching a Stand-Alone Solar Park Light Pole in the Islamic Azad University, Science and Research Branch of Tehran

Stand-alone solar LED lighting solutions illuminate small and large trails as well as parking lots and recreational shelters located in areas too expensive or sensitive to run power lines. Since the energy is valuable, solar park lights can save cost over traditional park lights when installed in new or existing parks. Solar lighting systems are easy to install and include cost saving options of Connection to the grid, produce fewer greenhouse gases and desired light levels. In this study, 50 solar lamp bases are designed and lights were installed on campus. For economic and environmental assessment lights RET Screen software was used. The RET Screen International Clean Energy Decision Support Centre seeks to build the capacity of planners, decision-makers and industry to implement renewable energy, cogeneration and energy efficiency projects. Based on the results, the internal rate of return equals to 37/3 % and the simple payback time equals to 8/2 years, and the equity payback time equals to 4 years and during this period, 6.9 tons of greenhouse gas emissions has been avoided.