International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 06 | June -2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 976 Cost Benefit Analysis of a Roof Top Solar PV System at a Domestic Apartment in Kolkata Pallav Dutta 1 , Ushnik Chakrabarti 2 1 Assistant Professor, Dept. of Electrical Engineering, Narula Institute of Technology, West Bengal, India 2 Assistant Professor, Dept. of Electrical Engineering, Narula Institute of Technology, West Bengal, India ---------------------------------------------------------------------***---------------------------------------------------------------------- Abstract - Using of roof top PV system can be rapidly deployed on various apartments with a large roof top area in the city. The paper shows an investigation on variation of energy consumption from distributors of a domestic consumer while using solar power or maintains conventional system. The paper also explores the coast benefit analysis of an implementing PV system in an apartment. The impacts of various economic parameters are also taken into consideration. Key Words: Rooftop PV cell, Block tariff, irradiation factor, insulation factor, Cost analysis, AMI. 1. INTRODUCTION There is a necessity to hasten the development of clean energy technologies in order to address the global challenges of energy security and sustainable development. Solar PV cell technology is the easiest option to reduce the excessive usage of non-renewable energy sources. As India is located in the equatorial sunbed of the earth, the territory receives plenty radiant energy from the sun. Most part of India is experiencing over 250-300 days a year of clear sunny weather, where the annual global radiation varies from 1600-2200 kWh/m 2 having equivalent energy potential about 6000 million GWh energy per year, which is quite higher than the countries total annual energy consumption [1] . The paper describes a cost analysis between a domestic (urban) consumer category of rate G in normal tariff scheme and running with a PV rooftop panel at a domestic apartment in Kolkata. 2. ENERGY CONSUMPTION ANALYSIS OF THE APARTMENT Kolkata is a developing metropolitan with population of about 45 lakh, which is increasing rapidly and so the energy consumption. Accommodation is a huge problem the city is facing right now and as some result apartments are in trend these days. In order to provide electricity throughout the city the generation and distribution companies meet huge challenges over the years. Now a days the thermal power generation sectors are experiencing several challenges like excessive hike of fossil fuel cost and the maintenance cost during transmission and distribution encourages several consumers to shift from conventional energy systems to non- conventional renewable energy systems like rooftop PV solar cell generation [2-3] . Here the detailed monthly and annual energy consumption of an apartment in Kolkata consisting 14 households. The detail of the gross payable amount to the electricity company is also taken into account. In this calculation the cost due to load power factor, fixed monthly charges and meter charges are not taken into consideration. Only the monthly unit (kWh) consumption of each household is considered and the current tariff rate consumer category of rate G in normal tariff scheme of CESE ltd. Thus, in this paper we have taken the energy consumption of a whole apartment into consideration for a year long. Table -1: The energy consumption and considerable amount of charges monthly and annually.