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Energy Resource Management
Electricity use
The Group's total electricity consumption in 2022 amounted to approximately 163 million kWh, representing a slight decrease of 5% compared to 2021 and a significant decrease of 19.7% compared to 2015 (the benchmark year for the 2025 SDG). The primary source of consumption was from the operation of injection molding machines. Unless there has been a fluctuation in the quantity of products shipped, the impact of energy conservation initiatives implemented over the years have continued to have an effect on the Corporation's overall electricity consumption has persisted. Based on statistical data, the Corporation has achieved a total reduction of 6,839,000 kWh (equivalent to 24,622.6 gigajoules) in electricity consumption in 2022.
In addition, to decrease Scope 2 greenhouse gas emissions, factories located in Mainland China have fully installed with solar photovoltaic systems since 2018. The total power capacity of these systems is 3,562kW, with the largest capacity of 1,762kW was generated from the Wujiang Factory. The total electricity power generated in a year is approximately 3.94 million kW (14,184 gigajoules). Renewable energy, specifically solar energy, accounted for approximately 2.6% of the Group's electricity consumption in 2022. The o ce equipment unit of the Corporation has planned several power-saving solutions tailored to the unique production processes of each factory area.
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Natural Gas Consumption
At Radiant Opto-Electronics Corporation, the Wujiang Factory is the only facility that utilizes natural gas for employees' dormitories to heat the hot water boiler in employees' dormitories. Since 2017, a heat recovery system has been implemented to recycle the waste heat produced by the air compressor. This system has the potential to save approximately 361 degrees of natural gas (14,079 Joules) per month. In 2023, we will gradually replace gas stoves with electromagnetic stoves in the Wujiang and Nanjing Factories to reduce the use of fossil fuels, with an estimated carbon reduction benefit of 378.21 tonnes of CO2e.
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Water resources management
The Company has no process that requires large usage of water, water consumption is mainly for livelihood and air conditions facilities. Furthermore, factories under the Group are located either in the processing and export area or developed area, which water source is third-party water (tap water), and not surface water, groundwater, seawater or produced water, therefore no significant impact on the water sources is verified currently. Nevertheless, monthly water usage of each factory area is still being tracked, to continue to improve operational efficiency of existing equipments, to build additional backup units, increase operational flexibility, to avoid the risk of extreme weather-related rainstorms or droughts that would affect the company's operations.
In 2022, the Group's estimated third-party water (tap water) withdrawal of tap water was estimated at 1,663 million liters34%. The Group was able to save 345 million liters of water while maintaining the same water intensity per unit (kg) of product as in 2021. This represents a reduction of approximately compared to 2015, which serves as the benchmark year for the 2025 SDG goal.
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