Energy audit and conservation for industry sector in Rwanda: case study: Sulfo Rwanda industries ltd

Abstract

Energy efficiency is a fundamental pillar of industrial sustainability, directly influencing both operational costs and environmental impact. This study explores energy audit and conservation practices in Rwanda’s industrial sector, with a particular focus on SULFO Rwanda Industries Ltd. The research addresses the pressing issue of inefficient energy consumption, largely attributed to outdated equipment, inadequate maintenance, and the absence of systematic energy management. Through comprehensive data collection, energy consumption analysis, benchmarking against global standards, and simulations using RET Screen Expert software, this study evaluates the potential for improving energy efficiency. The findings highlight significant inefficiencies, with energy consumption in PET bottle production and soap manufacturing exceeding international benchmarks by 92.8% and 5.66%, respectively. By implementing targeted measures such as upgrading motors, optimizing lighting systems, and refining production processes, the study identifies opportunities for substantial energy savings estimated at 20,317 kWh annually alongside a cost reduction of approximately 2,499,005 RWF. These insights underscore the critical need for industries to integrate energy-efficient technologies and adopt real-time energy monitoring systems. The study concludes that fostering collaboration between industries and policymakers, enforcing regulatory energy audits, and investing in sustainable technologies can drive Rwanda’s industrial sector toward greater energy efficiency and long-term economic and environmental sustainability. The recommendations presented offer a strategic framework that can be adapted to similar industrial settings, supporting Rwanda’s broader transition to a green economy.