Life Cycle Cost Analysis in Construction of Green Building Concept, a Case Study

Based on data from the Green Building Council of Indonesia, more than one-third of CO₂ gas emissions worldwide are generated by buildings, it has an impact on the environment such as global warming, ozone layer depletion, and accumulation of waste. The concept of Green Building is considered very necessary to overcome global warming and improve energy and resource efficiency. In the process of building a building that is Green Building requires a relatively high cost when compared to conventional buildings. Therefore, the Life Cycle Cost (LCC) method is used to determine the total cost needed, the optimal cost of the building, the economic age of the building, the number of crew maintenance and the level of energy efficiency. The analysis using the Life Cycle Cost method requires several related costs such as Initial Costs, Maintenance Costs, Energy Costs, Replacement Costs, and Utility Costs. The analysis was conducted using the Present Worth method within a period of 8 years from the start of building construction. Based on data processing using the Life Cycle Cost method, the optimal cost of a green building concept building is IDR 232, 296, 615, 337 with the economic life of the building being 8 years, the optimal number of maintenance crews is 1 person and the level of energy consumption intensity is very efficient.