Audit Energi sebagai Wujud Penghematan Energi Listrik di Asrama Vyatra 1 Politeknik Energi dan Mineral Akamigas Cepu

Implementation of an energy audit at the Vyatra I Dormitory Building, PEM Akamigas, to identify potential energy savings. This audit includes analysis of energy consumption, voltage and current profiles, harmonics, lighting systems, and air conditioning systems. Historical energy consumption data is normalized with measurements over two weeks, resulting in an estimated annual energy consumption of 159,044 kWh. The Vyatra I Dormitory Building is assumed to contribute ±9.17% of the total energy use in ten buildings. The Energy Consumption Intensity (IKE) of this building increased from 135.02 kWh/m²/year in 2021 to 159.2 kWh/m²/year in 2023, exceeding the benchmarking value of office buildings of 102 kWh/m²/year. The measurement results using the Power Quality Analyzer (PQA) show that the voltage and current unbalance conditions are still in accordance with standards. Current harmonics (THD) are also below the IEEE 519-1992 standard limit, which is <20%. The lighting system is considered quite good, although there are still areas where the lights are still on even though they are empty. The temperature and humidity in several rooms vary, some meet SNI standards (temperature 25-27°C and relative humidity 50-70%), while others are outside the range. Implementation of savings, especially the installation of rooftop solar power plants, is recommended to reduce energy consumption and utilize excess energy for other buildings in the complex.