Economic feasibility of SPV integrated EV Charging Infrastructure for NIT Srinagar Institutional Campus in J&K, India

Abstract

The need for electric-vehicle charging infrastructure (EVCI) has recently emerged with much attention due to the rapid rise in usage of electric-vehicles (EVs). Presently, small scale solar-photovoltaic (SPV) system are utilized as distributed generation, so as to reduce conventional sources dependency. This article reports the economic feasibility of SPV integrated EVCI for institutional campus of National Institute of Technology (NIT) Srinagar located in Jammu and Kashmir, India. For analysis, the design and positioning of SPV system for institute campus is carried out using web-based Helioscope. While, the complete network design and economic analysis are performed using HOMER software. The solar global horizontal irradiance for institute location is retrieved from National Renewable Energy Laboratory (NREL) USA. The load data of the institute, for year-2019 is collected from electrical maintenance and repairs (EM&R) division of NIT Srinagar. Analyses are done for three different scenarios. Scenario-1 is the base case, with power supplied only by the utility-grid. Scenario-2 integrates the SPV system in addition to the utility-grid, delivering power to the institute campus load. Finally, scenario-3 incorporates both SPV system and EVCI with EVs serving as load (due to charging EVs). Thus in scenario-3, SPV system delivers power to the institute campus load in addition to EVs charging. Revenue is generated from SPV system by selling surplus energy to the grid, and EVCI with EV charging respectively. The comparative economic analysis is carried out for the presented scenarios.