International Journal of Research Studies in Electrical and Electronics Engineering(IJRSEEE) Volume 4, Issue 4, 2018, PP 11-22 ISSN 2454-9436 (Online) DOI: http://dx.doi.org/10.20431/2454-9436.0404002 www.arcjournals.org International Journal of Research Studies in Electrical and Electronics Engineering (IJRSEEE) Page | 11 Oppurtunities Efficiency Study of Electric Energy Consumption in PT. SAI Apparel Semarang Jaka Windarta 1* , Agung Nugroho 2 , Denis 2 , Ahmad Taufik Yunanto 2 1 Master Program of Energy Dept, Diponegoro University, Semarang, Indonesia 2 Electrical Eng. Dept, Diponegoro University, Semarang, Indonesia 1. INTRODUCTION Energy stability has very important contributions in supporting sustainable national development. However, the most problem of energy use is the rate of energy availability which is not balanced with the rate of energy needs. Therefore, in order to maintain national energy stability besides to actively undertaking development and diversification on the energy supply side, energy conservation efforts on the utilization side should be done to reduce the rate of energy use. Energy efficiency or efficient energy aims to reduce the amount of energy needed to produce a product or service. Government in Government Regulation No. 70 of 2009 has managed that users of energy sources and energy users using the energy and / or energy sources of more than 6,000 TOE (Tonne Oil Equivalent) within a year are required to conserve energy through energy management, besides energy users and / or energy sources below 6,000 TOE (Tonne Oil Equivalent) per year are required for using the energy economically and efficiently. On this research study, the authors take case studies on one of garment industry at Semarang city, namely PT. SAI Apparel. Total energy consumption at PT.SAI Apparel during 2016 reached 4,815 TOE (Tonne of Oil Equivalent). Because the energy consumption during 2016 is less than 6,000 TOE (Ton of Oil Equivalent), PT. SAI Apparel has no obligation to conserve energy through energy management, but PT. SAI Apparel still has an obligation to consume energy economically and efficiently. Also From the data sampling of Automatic Meter Reading owned by PT. SAI Apparel, during the month of July recorded every day there is a power factor value below 0.85. Also form the data bill of electricity costs PT. PLN (Persero), PT. SAI Apparel was exposed to a kVARH penalty in November 2016 until January 2017[3]. There are still opportunities of energy waste that is not Abstract: National energy stability has a very important role in support of the national development sustainable. However, the problem is often the rate of energy availability not balanced with the rate of energy needs, therefore it is necessary to do the efficiency of energy consumption on the user side. The industrial sector becomes the largest energy consumer in Indonesia. In this study author will conduct analysis energy efficiency potential by raising a case of study on one of the garment industry in semarang, namely PT. SAI Apparel. The energy efficiency will be based on production and energy consumption data during 2016, and evaluate the measurement of the electrical power quality. Based on the results of data analysis obtained from PT. SAI Apparel, it is known that electric power quality values for current imbalance parameters, voltage imbalance, and power factor have values that are not in accordance with the standard and risk increase the loss of power. Based on the analysis of electrical power quality of PT. SAI Apparel is known some quantity of power quality of PT. SAI Apparel has values that are not in accordance with the standards and risk increase the loss of power. Seeing these conditions obtained three energy saving recommendations that can be implemented at PT. SAI Apparel, that is.RST phase load balancing to reduce voltage and current imbalance, replacement of TL lamp by using LED lamp will produce energy saving 449.687kWh/year, replacement sewing machine induction motor with servo motor will produce energy saving 616.223kWh/ year, and improvement of the power factor will produce energy savings 5.774, 5kWh/year. Keywords: energy conservation; energy efficiency. *Corresponding Author: Jaka Windarta, Master Program of Energy Dept, Diponegoro University, Semarang, Indonesia