"Energy saving and low carbon" has been a guiding principle of Radiant Opto-Electronics. To effectively manage energy consumption, the Company gradually implemented the ISO 50001 energy management system and, through a PDCA-based continuous improvement management model, strictly controlled energy costs and reduced unnecessary consumption. Radiant Opto-Electronics has also established a Sustainable Development Committee to formulate energy-saving and carbon reduction development goals and plans. Centered on the "Energy Efficiency Team," "Low-Carbon Product Team," and “Green Procurement and Logistics Team,” it integrates energy-saving and carbon reduction strategies and performance across all departments. Meetings are held monthly, quarterly, and semi-annually to track effectiveness and implement improvement plans for related equipment. In addition to establishing a comprehensive energy management system, Radiant Opto-Electronics more carefully evaluated the impact of its operations on energy and formulated corresponding management policies for energy management:

Radiant Opto-Electronics has, for many years, been committed to implementing energy and emissions reductions. The Company's overall carbon emissions profile is dominated by indirect emissions from electricity (category 2). Accordingly, Radiant Opto-Electronics has placed significant emphasis on improving energy efficiency and accelerating the deployment of renewable energy consumption. Total energy consumption in 2025 amounted to 125,503.4 MWh; Outsourced electricity power amounted to 124,836.9 MWh, and natural gas consumption totaled 56.1 MWh.

Electricity and Renewable Energy Utilization

Radiant Opto-Electronics recognizes that electricity is the primary source powering production equipment and plant utility systems, and therefore has established annually adjusted corporate energy-saving strategy targets. In 2025, Radiant Opto-Electronics' total electricity consumption was approximately 124.837 million kWh. Total electricity savings amounted to 3.132 million kWh, and the annual electricity savings rate reached 2.4%. In advancing renewable energy, Radiant Opto-Electronics installed a solar photovoltaic system at its mainland China plant, with a total installed capacity of 3,626 kW. Total electricity generation for 2025 was approximately 3.566 million kWh. In 2025, renewable energy (solar photovoltaic) accounted for approximately 2.76% of the Group’s total energy consumption. All solar photovoltaic generation was self-generated and self-consumed. In planning for diversified energy consumption, Radiant Opto-Electronics purchased 82,000 renewable energy green power certificates, demonstrating its initiative and determination to support green energy and the low-carbon transition. According to statistics, the Group's renewable energy usage in 2025 reached approximately 68.5% (including solar self-generation for self-use and green power trading certificates / total electricity consumption) (2024 is around 40.9%)^note

In terms of energy management, Radiant Opto-Electronics completed certification in accordance with the ISO 50001 Energy Management System standard and established a real-time energy consumption monitoring platform. The platform enabled statistical analysis and intelligent energy-saving management of system equipment, supported the management and improvement of energy consumption for machine groups, and the Company continued to advance its energy management initiatives.

Note: The statistics on renewable and non-renewable energy consumption cover the major operational and production sites of the parent company and its subsidiaries in Taiwan and mainland China.

Energy Management Plan

Radiant Opto-Electronics actively promotes various energy reduction measures, selects equipment with high energy efficiency and energy-saving designs, lowers corporate and product energy consumption, and expands the use of renewable energy to optimize energy usage efficiency. The target for 2025 was for renewable energy to account for 35% of total Group energy consumption. In 2025, the Group's renewable energy usage reached approximately 68.5% (including solar self-generation for self-use and green power trading certificates / total electricity consumption), thereby achieving the target.    

In the future, to effectively reduce the environmental impact of the greenhouse effect, Radiant Opto-Electronics prioritizes "energy saving" as the primary objective in its energy use. Over the years, the Company has introduced various energy-saving technologies, such as automatic control of equipment, enhancement of equipment efficiency, energy recovery and reuse, and production management improvements, to reduce energy consumption. Additionally, during the equipment setup design and procurement stages, energy-efficient devices are prioritized.

At the same time, energy management schemes for offices and public areas, including constant temperature control of air conditioning, are promoted to strengthen the concept of energy saving among employees. Efforts also continue in reducing raw material usage and increasing waste recycling to mitigate greenhouse gas emissions. Additionally, to improve renewable energy consumption efficiency year by year, the Company installed self-generation, self-use solar optoelectronics systems, and have actively planned for diverse renewable energy sources. We have leased factory rooftops to photovoltaic power companies to establish solar power generation. The green electricity generated is then repurchased at rates more favorable than market prices for internal use at each factory. This initiative aims to reduce the consumption of grid electricity and increase the use of renewable energy, thereby achieving the goal of reducing category 2 carbon emissions from electricity use. The Kaohsiung plant will also focus on Taipower's "Small Green Power" or "Low-Carbon Power with Segmented Tariffs (RE30)". The Company reassessed its group-wide 2030 sustainability goals and established a long-term vision of achieving a "40% share of renewable energy across the entire group by 2030".

In the context of the global green economy, Radiant Opto-Electronics continues to strive for improvement. Starting in 2023, we successfully implemented the ISO 50001 Energy Management System and completed its verification, subsequently obtaining the certification. The validity periods for each plant's certification are detailed in Appendix 10. Through these efforts, we are implementing our green operations policy by effectively enhancing our energy efficiency.