Analysing Costs and Return of On-grid and Hybrid Solar Power System for Office Operation comparing each factor in investment decisions: A case study 1,600 M2 commercial building

Abstract

The purpose of the research was to analyze the cost effectiveness. and returns and comparison of each factor affecting investment decisions in solar power generation The assumptions in the analysis were divided into 8 alternatives: on-grid system (a1-40KW), (a2-50KW), (a3-60KW), (a4-70KW), respectively, and hybrid system (a5-90KW), (a6-110KW), (a7-110KW), (a8-120KW),respectively. Case study of a 1,600 M² commercial building by analyzing the project's finances using tools such as net present value(NPV), yield rate. Internal Return (IRR), Payback Period (PB), Return to Cost Ratio (B/C), Value of Capital Taken as a 7% discount rate, including a sensitivity analysis. Risk Factors and environmental impact factors The questionnaire was divided into 2 parts. Part 1 was the personal information of the respondents. Part 2 was the information on which factors are the most important in the decision to install solar cells. By analyzing the data, ELECTER ll is used to help analyze the priorities with consideration. Pair-by-pair comparison of the difference of the concordance index value plus the inconsistency of the advantageous choice indicates that the alternative relationship is a strong superiority. and do not surpass each other strongly Summary of the most suitable choice priority is alternative (a4-70KW), (a3-60KW), (a2-50KW), (a1-40KW), (a5-90KW), (a6-110KW), (a7. -110KW), (a8-120KW), respectively