Implementation of Green Building Concept in Office Building Jakarta

Green Building Concept has become popular in Indonesia. The purpose of this study was to determine the extent to which the implementation of green building principles in Office Buildings. Research Method using a GREENSHIP Rating Tools for existing building which consists of six categories; Appropriate Site Development (ASD), Energy Efficiency & Conservation (EEC), Water Conservation (WAC), Material Resources & Cycle (MRC), Indoor Air Health & Comfort (IHC) and Building & Environments Management (BEM). The results show that implementation the Green Building Concept could also made energy performance more efficient, after Implementing through Retrofitting of the Chiller System, Recycle Waste Water, Replacement of Conventional lamp to Energy Saving LED and also Training and Education to all employees and tenants. From comparing Data research before implementation of Green Building concept in 2014 and after Implementation and retrofitting in 2017 & 2018, found that Savings Cost from electricity bill payments is IDR. 466,803,325.67/month (18%) and roughly will Break Event Point (BEP) for 3.86 Years and Energy Efficiency Index (EEI) from 238.8 kwh/m²/Years to 123.65 kwh/m²/Year