Commercial building integrated energy system: sizing and energy-economic assessment

Abstract Integrated energy systems are one of the potential options for buildings that can reduce emission. In this research study, energetic and economic performance a micro-gas turbine combined heating cooling plant coupled with solar PV is analyzed an office building in Iran. For each analysis, two different scenarios have been performed. System sizing parameters defined way renewable to fossil fuel share correlated economy. To model studied system, time-dependent method used, which inherent characteristic energies. The energies used here heaters panels. Contours Net Present Value (NPV) evaluated as function parameters. addition, optimal system typical obtained results provided. Effect various major shows under current condition despite supportive incentive energies, strategies plans even without not economically viable due high discount rates. provide that, reasonable normal rate, grid electricity prices, governmental subsidization conventional heat, power (CHP) cooling, power(CCHP) necessary, only selling price (i.e. support program) effective increase penetration. show if interest rate less than 5%, NPV becomes positive. Also, when reaches $0.07/kWh or higher,