Energy Performance Analysis of the Crushing Area at PT. X Using Energy Performance Indicators (EnPI) Based on ISO 50001:2018
Analisis Kinerja Energi pada Area Crushing di PT. X Menggunakan Energy Performance Indicator (EnPI) Berdasarkan ISO 50001:2018
DOI:
https://doi.org/10.21070/r.e.m.v11i2.1863Keywords:
ISO 50001:2018; Energy Performance Indicator; EnPI; Significant Energy Use; Crushing Plant; Energy Efficiency.Abstract
Energy consumption in the mining industry is a key factor influencing operational costs and the sustainability of production processes. The crushing area represents a Significant Energy Use (SEU), accounting for over 50% of total operational energy consumption. This study analyzes the energy performance of the crushing area at PT. X using Energy Performance Indicators (EnPI) based on the ISO 50001:2018 framework. Data on electrical energy consumption and ore production from January to November 2025 were used to calculate the EnPI, establish the Energy Baseline (EnB), and analyze energy deviations. SEUs were identified through Pareto analysis based on installed power contribution. The results indicate an average EnPI of 7.886 kWh/tonne for the crushing area, with an established Energy Baseline of 7.8 kWh/tonne. Among 18 electric motors with a total power of 570.45 kW, four units were identified as SEUs—the Secondary Crusher Motor (150 kW), Warman Motor 1 (110 kW), Warman Motor 2 (110 kW), and Primary Crusher Motor (90 kW)—contributing a cumulative 80.64% of the load. Load factor analysis revealed that three of the four SEU units operated above nominal capacity (>100%). The largest positive deviations occurred in October (7.71%) and November (4.82%), findings that were corroborated by field observations. The identified potential energy savings amount to 31,877 kWh/year (1.25%), equivalent to IDR 38,379,600/year. Opportunities for energy efficiency lie primarily in operational improvements and enhanced equipment reliability rather than investments in new technology.
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