Facing the rising electricity demand brought by increased automation, Delta’s Dongguan Plant No. 2 has made environmental protection and energy efficiency its core philosophy. By implementing the ISO 50001 Energy Management System and using power density as a key performance indicator, the plant successfully reduced its power density by 33% between January and November 2024, far exceeding the annual target despite continuous production expansion. This remarkable achievement highlights Delta’s exceptional energy-saving technologies and management capabilities, reaffirming our commitment to achieving sustainable development while enhancing production efficiency.
Many of the factory’s facilities had been in operation for years, and upgrades had to be carried out without interrupting production, making the project far more complex than building a new plant. In addition, energy-saving retrofits required identifying high-efficiency yet cost-effective equipment for replacement, while maintaining system stability to ensure product quality. As industrial automation advanced, the increasing power consumption of production equipment posed yet another challenge—how to balance production expansion with energy efficiency.
Through in-depth analysis of historical energy data, the team established an energy baseline and modeling system, followed by hotspot analysis to identify potential high-consumption areas and production lines. By leveraging an energy-saving database to compare retrofit measures for similar types of equipment, the team uncovered key factors and opportunities contributing to energy waste. Finally, all proposed energy-saving solutions and their expected benefits were consolidated into a comprehensive report, providing clear, data-driven insights for energy management decisions.
Delta’s Dongguan Plant implemented a series of integrated energy-saving measures. In addition to introducing high-efficiency air-conditioning systems and smart lighting controls to reduce infrastructure energy use, the plant also adopted EC fan air handling units, variable-frequency air compressors, and regular leak detection programs to significantly improve equipment efficiency. At the same time, outdated machines were gradually replaced with high-efficiency models, and energy recovery technology was applied to the elevator systems. These hardware upgrades, combined with the implementation of an advanced energy management system, worked in synergy to achieve the plant’s ambitious energy-saving goals.
