Abstract
Energy audit is essential to reduce energy consumption for a sustainable industry. Cost reduction through energy saving benefits the industry to stay competitive in the market and reducing its carbon footprint. Manufacturing industry energy usage is characterized by high consumption in heating and cooling process. The paper presents the walk-through audit results of two automotive-part manufacturing companies. Both companies are categorized as small and medium companies that consume energy below 6000 toe/year. Firstly, companies submitted document to the auditor. Desktop evaluation was performed to calculate and rate current energy performance rating. Then, a walk-through audit was performed to finalize the companies energy performance rating based on Astra green energy rating system. Analysis based on companies energy performance indicators are presented to show potential energy saving.
Highlights
Industrial sector shares significant energy consumption of world’s energy consumption, consuming around 54%
Energy consumption in automotive industry is crucial for company sustainability as the energy usage contributes significantly to total production cost
Astra green energy rating is energy performance rating system developed by Astra International Tbk corporation for all affiliated companies
Summary
Industrial sector shares significant energy consumption of world’s energy consumption, consuming around 54%. The world energy consumption will increase 28% from 2015 to 2040 [1]. The impact of the consumption greatly affects energy resources and emission contribution. Industrial sector consumption is categorized into 3 subsectors: nonmanufacturing, energy-intensive manufacturing and nonenergy-intensive manufacturing [1]. Automotive manufacturing industry is categorized under energy-intensive manufacturing due to metal processing which requires much energy for heating and cooling process. Energy consumption in automotive industry is crucial for company sustainability as the energy usage contributes significantly to total production cost. Many companies often fail to notice excessive energy consumption [2] due to process complexity, high initial investment, long payback period, etc
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