Environmental Sustainability

Climate change affects the world as a whole, which indirectly affects the corporate management strategy and brings operational impacts. Under the current rising awareness of environmental protection in Taiwan, in order to mitigate greenhouse gas issues arising from the development of the industry, it must comply with the relevant laws and regulations on greenhouse gas reduction, and promote various greenhouse gas emission reduction programs to fulfill corporate social responsibility.

Environmental Policy

The importance of Billion’s energy policy lies in its ability to help the Company achieve economic benefits while protecting the environment and complying with relevant regulations and standards. An effective energy policy reduces energy costs, improves efficiency, lowers carbon emissions, and addresses climate change as part of the Company’s responsibility for sustainable operations. By continuously improving energy efficiency and adopting renewable energy, Billion is committed to becoming a global leader in green manufacturing.

The Company undergoes annual third-party verification to certify compliance with ISO 14001 (Certificate No.: TW07/01136, valid from 2024/08/31 to 2027/08/31), ensuring effective implementation of the ISO 14001 Environmental Management System. In the first quarter of 2025, Billion also completed verification of greenhouse gas emissions under ISO 14064-1.

Energy Resource Management

The Billion Group’s energy consumption in 2024 is shown in the table below. Compared to 2023, total energy use increased by 1,193.29GJ, and energy intensity rose by 0.44GJ per NT$1 million in revenue. This increase was mainly due to the Group’s ongoing expansion of energy storage projects. As the number of completed sites grew, so did the operational and maintenance demands. In 2024, the scale of new construction projects also increased significantly, resulting in more complex on-site operations and higher travel frequency, which contributed to increased fuel consumption. In addition, electricity usage rose in some facilities due to adjustments in the Group’s operational strategy. These combined factors led to the overall rise in energy intensity in 2024.
Indicator Unit 2022 2023 2024
Electricity Consumption kWh / year 456,852 631,861.20 710,211.60
GJ 1,644.67 2,274.70 2,556.76
Gasoline Consumption L / year 17,860.80 22,955.50 46,499.60
GJ 582.89 749.16 1,480.36
Diesel Consumption L / year 2 19.6 4,997.90
GJ 0.07 0.69 180.71
Organization-Specific Metric Operating Revenue Operating Revenue Operating Revenue Operating Revenue
Organization-Specific Metric Value NT$ million 880 1,574 1,787.80
Total Energy Consumption GJ 2,227.63 3,024.55 4,217.84
Energy Intensity GJ / NT$ million revenue 2.53 1.92 2.36

Notes:

  1. Electricity heat value conversion: 1 kWh = 0.0036 GJ.
  2. Conversion factors are based on the 2023 Bureau of Energy Statistical Manual and the EPA Greenhouse Gas Emission Factor Management Table version 6.0.4, calculated from fuel heat values: gasoline 7,609 kcal/L; diesel 8,642 kcal/L; LPG 6,635 kcal/m³; 1 kcal = 4.184 KJ. Electricity heat value conversion: 1 kWh = 0.0036 GJ.
  3. The organization-specific revenue figures for 2022 only include Billion, Billion Watts, and Billion Sunpower.
  4. The organization-specific revenue figures for 2023 and 2024 only include Billion (headquarters, Yilan Plant, Hsinchu Laboratory), Billion Watts, Billion Energy Storage, Billion Power System, and Billion EVC; energy data includes Billion (headquarters, Yilan Plant, Hsinchu Laboratory), Billion Watts, Billion Energy Storage, Billion EVC, and Billion Power System.
  5. The 2023 disclosure originally covered only the Company; subsidiary data has now been included, and the information has been restated accordingly.

Energy Conservation Achievements

Every year, Billion Group remains committed to energy conservation and carbon reduction, continuously reviewing and identifying areas for improvement at each site. In addition to ongoing promotion of daily energy-saving practices—such as turning off lights when not in use, installing remote-controlled air conditioning systems, using circulation fans to maintain comfort without lowering temperatures excessively, replacing faulty fluorescent lamps with LED lighting, and adopting digital forms and e-approval processes to reduce paper usage—the Company continues to improve energy efficiency.



In 2024, a total of 41 LED panel lights were installed, replacing traditional grid ceiling fixtures. Over 2,000 hours of use, this upgrade is estimated to save approximately 5,986 kWh and reduce carbon emissions by about 2,837 kg, equivalent to planting 236 trees. At NoonSpare, all lighting was fully upgraded to LED tubes by the end of 2023, and smart meters were installed to increase electricity monitoring frequency from once every two months to real-time monitoring every 15 minutes. This improvement enables more accurate detection of abnormal usage and enhances energy management performance.


Due to the intermittent and unstable nature of renewable energy, nighttime peak demand in Taiwan remains a challenge, making grid dispatch more difficult. To address this, Billion Group actively supports government green energy policies and has invested in renewable energy by establishing energy storage sites across Taiwan. These sites make effective use of idle land and rooftops, helping to increase the share of green energy in total electricity generation. In 2024, seven energy storage systems were installed. By responding rapidly to grid frequency fluctuations, these systems help stabilize the power supply. Excess renewable energy can be stored and used during peak demand, improving overall energy utilization and grid stability, mitigating power shortages, and supporting the goal of promoting the green energy industry.

Greenhouse Gas Emission Management

Greenhouse gases are the main cause of global warming. Therefore, Billion Group actively responds by conducting greenhouse gas inventories. In 2024, greenhouse gas emissions are categorized into direct and indirect emissions. Direct emissions come from gasoline and diesel use, while indirect emissions come from electricity consumption. Scope 3 emissions were also included in 2024. The Company has no ozone-depleting substances or other significant gas emissions. Billion Group will continue to enhance its efforts to achieve environmental sustainability goals.

Item 2022 2023 2024
Scope 1: Direct GHG emissions (tons CO₂e) 42.14 68.96 153.69
Scope 2: Indirect GHG emissions (tons CO₂e) 232.54 312.77 336.64
Scope 3: Other indirect GHG emissions (tons CO₂e) – 262.14 288.6
Total Emissions = Scope 1 + Scope 2 + Scope 3 (tons CO₂e) 274.68 643.87 778.92
GHG Emission Intensity 0.31 0.41 0.44

Note:

  1. Emission factors are based on the Ministry of Environment’s announcement dated February 5, 2024.
  2. Purchased electricity emissions are calculated using the emission factors published by the Bureau of Energy, Ministry of Economic Affairs: 2022 = 0.495 kgCO₂e/kWh; 2023 = 0.494 kgCO₂e/kWh; 2024 = 0.474 kgCO₂e/kWh.
  3. Greenhouse gas emission intensity = Total emissions (tons CO₂e) / Revenue (million NTD).
  4. The 2023 and 2024 inventory data include Billion (headquarters, Yilan plant, Hsinchu laboratory), Billion Watts, Billion Energy Storage, Billion EVC, and Billion Power System.
  5. The 2022 inventory was conducted internally. Starting from 2023, greenhouse gas emissions have been verified by a third party.

Carbon Reduction Target Planning

To achieve the Company’s vision of a net-zero future, we have developed commitments across multiple areas including net-zero emissions, green energy, water conservation, environmental protection, and sustainable products. Using 2022 as the base year, rolling adjustments are made annually based on current conditions. We set climate change management targets by establishing short- and mid-term goals, while reviewing the 2023 emission reduction performance to assess the effectiveness of our carbon reduction efforts.


Climate Change Mid- and Long-term Management Targets:

Item Indicator 2024 2030 Mid-term Target 2050 Long-term Target
Environmental Products Proportion of sustainable product sales revenue 8.95% 15% 20%
Mitigation Percentage of renewable energy use 0 20% 50%
Emissions per NT$100 million revenue (Scope 1 and 2) 1% 6% 10%

Waste Management

The Company categorizes its waste into general domestic waste and hazardous industrial waste. General domestic waste mainly originates from employee daily activities and includes household garbage, waste plastics, and paper waste. Hazardous industrial waste primarily includes discarded electronic components, defective products and rejects, waste printed circuit boards (PCBs) containing metals and their dust, PCBs with attached components, and scrapped customer returns that cannot be repaired (including metal-containing PCBs). Hazardous waste and solder dross generated during the Company's manufacturing processes are handled and recycled by licensed Class A waste disposal and recycling contractors.


Packaging materials used in raw material supplies—such as cardboard boxes and plastic packaging—along with scrapped customer returns containing cardboard and plastics, are also categorized as waste. All third-party disposal companies engaged by the Company comply with the Waste Disposal Act and related regulations. These contractors use GPS tracking systems and operate without any incidents of leakage or spillage, thereby minimizing environmental impact. Hazardous waste accounts for only a small proportion of total waste and is not considered material to the Company’s overall waste management performance. Employee-generated domestic waste is centrally handled by the building management center.


The Company only temporarily stores waste on-site before handing it over to external disposal or recycling contractors; no direct treatment is conducted internally. At the Yilan Plant, household waste is collected using designated Longde Industrial Park garbage bags, which are placed at the main entrance weekly for pickup by contracted cleaning companies.


The Company is committed to environmental protection and ensures proper waste sorting. It actively promotes circular economy practices and waste reduction initiatives, such as encouraging suppliers to take back and reuse packaging materials (e.g., bags and cushioning). In 2024, one supplier participated in the reuse of packaging bags and cushioning materials. The Company has also adopted the ISO 14001 management system for waste management. The Yilan Plant reported no industrial waste in 2024, with only general domestic waste generated.


Due to centralized waste management by the building management center, the general waste generated from daily operations at the C ompany’s headquarters cannot be individually quantified or monitored with precision. To better estimate the general waste generated during operations for the purpose of future management and reduction efforts, the Company adopts local government-published average per capita waste generation data as a basis for reasonable estimation.


For certain office sites, estimations are based on the respective county or city’s per capita waste statistics, resulting in the following calculated volumes: 10.25 metric tons for Billion Watts, 1.43 metric tons for BEC Taiwan, 1.92 metric tons for Billion EVC, and 1.37 metric tons for the Hsinchu Laboratory.

Billion Hazardous Waste Generation and Disposal

Waste Composition Category 2023 Waste Disposed (tons) Disposal Method 2024 Waste Disposed (tons) Disposal Method
Metal-containing PCB waste and powder Hazardous 0.64 Other disposal 0.21 Other disposal
Waste electronic components, defective products, and substandard products Hazardous 0.11 Other disposal 0.02 Other disposal
Waste PCB with attached components Hazardous 6.36 Other disposal 8.37 Other disposal
Total -- 7.11 -- 8.6 --

Notes:

  1. The above data refers to Billion Headquarters.
  2. All waste weights are measured in metric tons.
  3. Types of recycling operations include: preparation for reuse, material recycling, and other recycling activities.
  4. Examples of material recycling: downcycling, upcycling, composting, or anaerobic digestion.
  5. Other recycling activities may include repurposing or refurbishment.
  6. Types of disposal methods include: incineration (with energy recovery), incineration (without energy recovery), landfill, and other disposal operations.
  7. Examples of other disposal operations: dumping, open burning, or deep well injection.
  8. “Off-site” refers to locations outside the physical boundary or administrative control of the reporting organization.

Non-Hazardous Waste Generation and Treatment at Billion Headquarters

Item 2023 Waste Generated (tons) Treatment Method 2024 Waste Generated (tons) Treatment Method
Waste Plastics 0.18 Other recycling 0.33 Other recycling
Waste Aluminum 0.02 Material recycling 0.01 Material recycling
Waste Paper 5.18 Other recycling 3.46 Other recycling
General Domestic Waste 13.32 Incineration 9.37 Incineration
Total (Off-site) 5.35 – 3.78 –

Notes:

  1. The above data refers to Billion Headquarters.
  2. Types of recycling operations include: preparation for reuse, material recycling, and other recycling activities.
  3. Examples of material recycling: downcycling, upcycling, composting, or anaerobic digestion.
  4. Other recycling activities may include repurposing or refurbishment.
  5. Types of disposal methods include: incineration (with energy recovery), incineration (without energy recovery), landfill, and other disposal operations.
  6. “Off-site” refers to locations outside the physical boundary or administrative control of the reporting organization.
  7. Employee numbers are based on the number of active employees at year-end.
  8. In 2024, the volume of general domestic waste decreased compared with 2023, mainly due to the transfer of some employees to the subsidiary BEC Taiwan.

Water Resources Management

To maximize water use efficiency, the Company promotes daily water-saving practices, such as turning off taps after use and installing water-saving devices. Through these ongoing efforts, employees are encouraged to value water resources and contribute to effective conservation.


Water use at the Company and the Yilan Plant is primarily for domestic purposes, sourced entirely from tap water. No groundwater is used. The head office water supply is managed centrally and mainly sourced from Feitsui Reservoir, while the Yilan Plant is supplied by the Xincheng River. NoonSpare sources all its water from the Taichung City water supply system, with no groundwater usage. Water is used only for office-related domestic purposes, without involvement in industrial processes or water recycling systems. Based on water risk assessments using external tools, the Company, Yilan Plant, and NoonSpare all fall within low to medium water risk areas, with no significant impact on local water sources or ecosystems. Water resource management is therefore not considered a material issue. The Yilan Plant conducts semi-annual wastewater quality testing, with all results meeting local regulatory discharge standards. Water consumption is calculated in accordance with the “Water Resource Indicator Disclosure Guidelines” issued by the Water Resources Agency. According to this guideline, water withdrawal refers to the sum of water intake and reused water. Since the Company does not reuse water in its production processes, the reported volume reflects actual water intake. In 2024, major production sites reported the following: Yilan Plant: Water withdrawal totaled 0.002042 million liters, with a water intensity of 0.0072. NoonSpare: Water withdrawal totaled 0.2770 million liters. As wastewater charges are not listed on NoonSpare’s water bills, discharge and consumption volumes are not disclosed. Detailed water data is presented in the table below.

Billion Yilan Plant Water Usage Information

Year 2023 2024
Water Withdrawal (million liters) 0.1054 0.2042
Water Discharge (million liters) 0.0870 0.1640
Water Consumption (million liters) 0.0230 0.0330
Organization-Specific Metric (NT$ million) Revenue Revenue
Organization-Specific Value 0 27.5130
Water Intensity 0 0.0072

Notes:

  1. Water Consumption = Water Withdrawal – Water Discharge.
  2. Water Intensity is calculated as: Water Withdrawal (million liters) / Revenue (NT$ million).

NoonSpare Water Usage Information

Year 2024
Water Withdrawal (million liters) 0.2770
Organization-Specific Metric (NT$ million) Revenue
Organization-Specific Value 17.1800
Water Intensity 0.0183

Notes:

  1. Water Consumption = Water Withdrawal – Water Discharge.
  2. Water Intensity is calculated as: Water Withdrawal (million liters) / Revenue (NT$ million).
  3. NoonSpare’s water bill does not include wastewater charges, so discharge and consumption data are not available.
  4. NoonSpare joined Billion Group in April 2024; therefore, no 2023 data is available.

  • Board and management oversight and governance of climate-related risks and opportunities

    The Company holds regular Board meetings, with the Sustainability Development Committee reporting quarterly on ESG progress and greenhouse gas targets in line with FSC requirements. The Committee consists of four sub-groups—Corporate Governance, Environmental Protection, Social Responsibility, and Sustainability Risk Management & Disclosure—working together through an Executive Task Force to drive implementation.

  • How the identified climate risks and opportunities affect the company's business, strategy and finances (short-term, medium-term, long-term)

    At the beginning of each year, the Sustainability Development Committee discusses and identifies climate risks and opportunities relevant to the Company. Together with external experts, these are evaluated based on likelihood and financial impact to determine material transition risks, physical risks, and transition opportunities. The time horizons are defined as:

    • Short-term: 1–3 years
    • Medium-term: 4–10 years
    • Long-term: Over 10 years

  • The financial impact of extreme climate events and transition actions

    Transition Opportunities

    In line with government energy transition policies, the Company regularly reviews its solar, storage, and charging solutions to enhance revenue. Subsidiaries Billion Watts and Billion EVC actively support renewable energy development and provide comprehensive green energy solutions. In 2024, green energy business revenue accounted for over 81% of the Group’s consolidated revenue, driving future growth.

  • How to integrate climate risk identification, assessment and management processes into the overall risk management system

    The Sustainability Development Committee has four cross-functional working groups that identify and assess climate risks and opportunities every two years, with annual reviews for adjustments. Ongoing risk control is managed through internal procedures by each business unit, while progress and results are reported regularly to the Committee.

  • Use scenario analysis to assess resilience to climate change risks. The scenarios, parameters, assumptions, analysis factors and main financial impacts used should be explained.

    Transition Risk Scenarios

    International Energy Agency (IEA)

    STEPS ‒ Stated Policies Scenario (2.5°C)

    NZE ‒ Net Zero Emissions Scenario (1.5°C)

    • Regulations ‒ Net Zero and Carbon Reduction Requirements & Climate Change Response Act: To reduce emissions and lower carbon fees and excess emission costs, the Company plans to purchase green electricity through Renewable Energy Certificates (RECs), each estimated at NT$5,500 - 7,000. Paying carbon fees based on emissions, penalties for not meeting reduction targets, switching from grid to green power, or purchasing carbon credits for carbon neutrality are expected to increase operating or administrative costs.
    • Market Risk (Changes in Customer Behavior and Rising Material Costs): To reduce the risk of losing orders, the Company conducts product carbon footprint verifications as required by power product customers and regularly discloses carbon reduction performance. It also actively supports group e nergy-saving strategies to mitigate the impact of rising electricity costs.

    Physical Risk Scenarios

    2°C warming scenario (SSP3-7.0): Estimated sea level rise around Taiwan: 0.5 meters

    4°C warming scenario (SSP5-8.5): Estimated sea level rise around Taiwan: 1.2 meters


    Long-term ‒ Sea Level Rise:

    1. No relevant risks identified at the operational sites covered within the reporting boundary.
    2. Physical climate risks are regularly reviewed to assess potential impacts and to enable early implementation of preventive measures.

  • A transformation plan to manage climate-related risks, describing the content of the plan, and the indicators and targets used to identify and manage physical and transition risks

    The Company plans to develop specific transition risk response strategies and establish management indicators and targets following the completion of greenhouse gas inventories and baseline assessments of energy equipment. In the meantime, the following energy-saving measures have been implemented:

    1. Assessing the feasibility of establishing an energy management system.

    2. Replacing traditional lighting with LED tubes to improve energy efficiency.

    3. In support of Taiwan’s “2050 Net Zero Emissions” policy and renewable energy expansion, the Company participates in Taipower’s AFC (Automatic Frequency Control) energy storage system, which helps improve the utilization of renewable energy. In 2024, the Company increased its investment in Billion Kai Co., Ltd. by approximately NT$18 million for the development and construction of solar power plants. The annual average green electricity generation from this investment is estimated at 1.1 million kWh, corresponding to a carbon reduction of approximately 543 tCO2e. Additionally, the Company's own solar power facilities generated and sold approximately 1.426 million kWh of electricity to Taipower in 2024, helping to reduce carbon emissions by about 705 tCO2e.


    • As part of its commitment to energy conservation and carbon reduction, the Company promotes green production and sustainable operations under the framework of corporate social responsibility. Measures include reducing paper usage and greenhouse gas emissions, encouraging suppliers to recycle packaging materials, promoting energy-saving behaviors such as turning off lights, using remote controlled air conditioning, using circulation fans to reduce the need for low-temperature settings, replacing faulty fluorescent lamps with LED lights, and adopting electronic forms and digital approval processes.
    • In 2024, the Company replaced 41 fluorescent lights, resulting in a total electricity saving of 5,986 kWh.
    • Billion Watts has also collaborated with clients and vendors to install solar PV systems on rooftops and land assets, maximizing space utilization while reducing fossil fuel use and environmental impact. As of 2024, the team has completed over 1,800 solar PV installations, including rooftop, floating, ground-mounted, and agrivoltaic systems, with a total installed capacity exceeding 620 MWp.

  • Internal carbon pricing as a basis for pricing planning tools

    Following the completion of the Group’s 2025 greenhouse gas inventory, Billion Group will identify major emission sources across subsidiaries and progressively implement an internal carbon pricing mechanism as a reference for evaluating carbon reduction costs. The Company also closely monitors the carbon fee regulations announced under the Climate Change Response Act and Carbon Management Act to ensure timely internal alignment and operational readiness.

  • Climate-related goals should describe the activities covered, scope of greenhouse gas emissions, planning period, and annual achievement progress.

    The Company completed its 2024 GHG inventory and launched a Scope 3 inventory in 2025. In line with IFRS S1 and S2 reporting, the boundary has been expanded to subsidiaries, with specific climate targets set, including potential use of carbon offsets or Renewable Energy Certificates (RECs).

Renewable Energy

Corporate Social Responsibility (CSR) has become the common mission of the global business community since the early 21st century. In recent years, the trend of ESG (environmental, social, and corporate governance) investment has gained momentum, calling on major corporations and the general public to invest in enterprises that fulfill ESG responsibilities to achieve the vision of global sustainable management.

The COVID-19 pandemic has exacerbated poverty worldwide, with a severe food crisis affecting an estimated 150 million people and one-third of the global population facing water scarcity. Various extremes and inequalities around the world have made it clear that embracing a sustainable future poses many challenges.

"Talking about climate change is a risk, but a low-carbon economy is an opportunity". As long as there is a change in perspective, investing in CSR and ESG can be seen not as  a cost but as an opportunity. Billion continues to adhere to its longstanding philosophy of commitment to the development of renewable energy for environmental sustainability.