Technical, Environmental and Financial Feasibility Study of Solar Power Plants by Retscreen, according to the Targeting of Energy Subsidies (Case Study: Photovoltaic Plant of Tehran Science and Research Branch Islamic Azad University)

Subject Areas : Water and Environment

Majid  abbaspour ¹ (Department of Mechanic Engineering, Sharif University of Technology, Tehran, Iran)
Ali reza  Mirzayehosseini ² (Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran. (Corresponding author))
Taraneh  Taheri ³ (Department of Environmental Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran)

Received: 2010-05-05 Accepted : 2011-02-01 Published : 2011-09-23

Keywords: Energy, Power Plant, photovoltaic, Greenhouse gasses, Simple payback,

Abstract :

The energy consumption growth in the country has been increased so much that it has made us an importer of energy instead of being a major exporter.In order to face such a threat, implementing strategies to optimize energy production and consumption,modifying energy consumption patterns and utilization of renewable energies is necessary. In this regard Iran Azad University, as one of the first pioneers of utilization of renewable energies incampuses, has established a 12 kW photovoltaic power plant in Tehran science and Research Branch of it.In this study, we have taken advantage of The RETScreen International Photovoltaic Project Model in order to evaluate the energy production, life-cycle costs and greenhouse gas emissions reduction and finally analyze the financial viability.In this study, based on new electricity tariffs, three scenarios have been developed, according tothe targeting of energy subsidies and we have also dedicated one of our scenarios to the reduction ofgreenhouse gasses. In the first case the electricity price was set to 450 Rial/kWh and no credit was assigned to the reduction of greenhouse gasses (GHG), therefore equity payback (Return positive cash flow) has been 12.1 year. In the second case the electricity price was set to 2100 Rial/kWh, therefore equity payback (Return positivecash flow) was 8 year. Finally in the last scenario by considering a credit to the reduction of greenhouse gasses and electricity price being 2100 Rial/kWh and applying solar panels with high efficiency and suitableatteries(DOD=60%), equity payback(Return positive cash flow) will be reached within6 years. In conclusion, we can say that by applyingnew technologies and establishing supportive policiesof the government payback time can be reducedremarkably

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