Energy Management and Saving Effectiveness

Energy Management Policy and Commitment

GlobalWafers actively responds to the challenges posed by global climate issues and demonstrates its determination for a low-carbon transition by embedding “energy efficiency” and “green manufacturing” into the core of its corporate decision-making and future operational guidelines. We commit to leveraging systematic management frameworks to continuously improve our energy efficiency, thereby reducing the carbon emissions generated by manufacturing processes and business activities within our organizational boundaries.

All operating facilities under GlobalWafers (except for operation sites that have been in formal production for less than one year) have successfully implemented and maintained the energy management system (ISO 50001). By executing the PDCA (Plan-Do-Check-Act) continuous improvement cycle, we have deeply ingrained baseline comparison and the spirit of energy saving into our daily operations.

Core Energy-Saving Strategies and Principles

To advance green manufacturing, we focus on three key strategies: manufacturing process redesign, replacement of legacy equipment, and smart monitoring, supported by proactive operational management practices.

  • Manufacturing Process Redesigns: We continuously improve and streamline the ingot pulling and subsequent wafer processing workflows, as well as the manufacturing machinery. For instance, redesigning the hot-zone fields of pulling furnaces reduces heat loss, thereby lowering energy consumption per unit and total factory electricity usage.
  • Replacement with High-Efficiency or Eco-Friendly Refrigerant Models: We are phasing in high-efficiency chillers equipped with eco-friendly refrigerants, variable-frequency air conditioning systems, high-efficiency air compressors, and LED smart lighting systems across our facilities. These upgrades target utility systems with high energy consumption, one of the key areas for improvement.
  • Smart Monitoring: We have established intelligent monitoring and energy management systems to capture real-time power loads and energy consumption across utility systems and production areas. Through data-driven analysis, we identify energy hotspots and uncover opportunities for continuous improvement.

Recent Performance (2022–2025)

Through the collective efforts of our colleagues of global operation sites, GlobalWafers has demonstrated significant and steady electricity-saving performance over the past four years (2022 to 2025). The actual performance for each year are detailed below:

  • 2022: Implemented multiple energy management initiatives, including building infrastructure upgrades, utility system improvements, and process equipment redesign projects, achieving annual electricity savings of 7,288 MWh.
  • 2023: Deepened energy management programs focused on manufacturing energy-saving technologies. The effectiveness reached a record high, with single-year electricity savings substantially increasing to 15,189 MWh.
  • 2024: Continued to implement energy management initiatives, including variable-frequency retrofits and smart energy allocation, resulting in an additional 13,399 MWh of electricity savings.
  • 2025: Advanced energy management initiatives through system integration optimization and improvements to ancillary equipment, including abatement systems (local scrubbers), resulting in electricity savings of 12,444 MWh.

Electricity Savings Trend

Over the past four years, GlobalWafers has consistently achieved significant annual electricity savings, resulting in a cumulative reduction of 48,321 MWh in electricity consumption. This reflects our strong commitment to turning low-carbon transition goals into tangible actions.

Outlook for a Net-Zero Sustainable Future

Achieving cumulative electricity savings of 48,321 MWh marks a significant milestone in GlobalWafers’ commitment to green manufacturing and its transition toward low-carbon operations. However, our efforts in energy optimization will not stop here.

In the years ahead, in addition to further reducing energy consumption and improving energy efficiency, GlobalWafers will continue to increase the share of renewable energy across its global operations in alignment with its RE100 commitment pathway.

To achieve this goal, we will adopt a diversified renewable energy strategy, including the installation of on-site solar photovoltaic (PV) systems, both rooftop and ground-mounted, within our facilities; securing stable renewable energy supplies through long-term Power Purchase Agreements (PPAs); and procuring Renewable Energy Certificates (RECs).

Furthermore, through cleaner production practices, green building standards, and the adoption of advanced low-carbon technologies, GlobalWafers will continue to advance its sustainability journey with a transparent, science-based, and systematic approach. Together with partners across the global semiconductor value chain, we are committed to achieving our long-term environmental sustainability goal of net-zero emissions by 2050.