To respond to the challenges of global energy shortages and climate change, we consolidate energy-saving proposals from all units to set relevant targets and action plans each year and periodically monitors and controls performance. Additionally, we promote production machinery assessments to drive energy efficiency improvements in plant facilities. Based on our energy-saving plan submitted to the Bureau of Energy, Ministry of Economic Affairs, the average energy-saving rate approved for our Taiwan Plant 2 was 2.97% in 2023. In line with the government’s promotion of renewable energy, we increased the installed capacity of solar panels at our Taiwan plant in 2020, reaching a cumulative capacity of 107 kWp by 2023, generating 119,877 kWh. Our new Taiwan plant, scheduled to commence production in 2024, will add an additional installed capacity of 126 kWp, bringing our total solar panel capacity to 233 kWp.
Energy Consumption
Electricity Usage of Production
In 2023, the total electricity consumption reached 76,548,376 kWh (76,548 MWp), with an electricity intensity of 6.61. The largest source of electricity consumption was process power, accounting for 55% of the total, followed by air conditioning, which accounted for 26% of the total electricity consumption. Although the total electricity consumption in 2023 decreased compared to 2022, the intensity increased, mainly due to the testing requirements of a new plant in Taiwan. Going forward, we will continue to focus on energy efficiency, renewable energy use, and alternative energy planning and execution.
Energy-saving Measures
To effectively lower energy consumption and GHG emissions, we actively promote various energy-saving measures. The focus is on improving the energy efficiency of plant facilities and production equipment, optimizing operational efficiency by adjusting production equipment parameters, and replacing traditional lighting with energy-efficient alternatives. We aim to achieve our environmental and energy-saving goals through initiatives across its plants. Additionally, we raise energy-saving awareness by encouraging employees to turn off lights when not in use and shut down computers after work. We also promote the widespread use of energy-efficient lighting and installs motion-sensor switches in areas with intermittent lighting needs to reduce energy waste by changing daily habits.
Energy-saving Measures and Performance of Each Plant in 2023
Key Points of Energy-saving Programs
Progressive Energy-saving Plans
GHG Emissions Management
To fulfill our social responsibility, we voluntarily conduct an annual self-assessment and disclosure of our GHG emissions. To meet our own targets, we adopted ISO14064-1:2018 for our 2022 GHG inventory of Taiwan plant as a demonstration. GHG data were consolidated using the operational control approach and verified by a third-party assurance agency. In 2023, all subsidiaries completed the external assurance of their GHG inventories, and we have completed the external assurance of the Group’s GHG inventory.
As purchased electricity is the main source of GHG emissions, we analyze the electricity consumption of our plant equipment and strive to reduce energy loss and improve energy efficiency. Power for processes accounts for 55% of our electricity consumption, making it the largest source of energy use, followed by air conditioners, air compressors, lighting and wastewater treatment facilities.
GHG Emissions over the Years
We adopted external inventory under ISO14064-1:2018 for the first time at our Taiwan plant in 2022, while other sites implemented it in 2023. The Taiwan plant calculated its GHG emissions using the “EPA GHG Emissions Factor Management Table (v. 6.0.4),” published by Taiwan’s Ministry of Environment. For China, emissions were calculated using the "2006 IPCC Guidelines for National Greenhouse Gas Inventories," the "China Products Carbon Footprint Factors Database," the "2022 National Grid Emission Factor" issued by the Ministry of Ecology and Environment of the PRC, the " China Products Carbon Footprint Factors Database (2022)," the "ecoinvent database," and the "2023 GHG Emission Factors Hub." For Malaysia, emissions were calculated using the "Greenhouse Gas Reporting: Conversion Factors 2023," published by the UK Department for Environment, Food and Rural Affairs (Defra), and the grid emission factors published by the Malaysian Energy Commission. For Singapore, emissions were calculated using the grid emission factors published by the Singapore Energy Market Authority. The global warming potential (GWP) for the Group was calculated using the "IPCC AR-6."
GHG Emission Intensity (Scope 1 + Scope 2)