Value Chain Emissions Management

Carbon Reduction Commitments and Policies

AUO began auditing the GHG emissions of our global manufacturing sites in 2003, and the ISO14064 standard was introduced to disclose emissions-related information through external verification. We developed a digital platform internally in 2010 to systematically manage the organization‘s GHG emissions as a means to managing long-term operational carbon reductions.

Innovative Low-carbon Production Greater Energy Efficiency Promote Renewable Energy
  • Progressive reduction of F-Gas
  • F-GHG volume reduction
  • Ecological benefits indicator management
  • Energy conservation efficacy verification
  • Smart energy monitoring and control
  • Power from renewable energy
  • Green certifications
  • All factories have installed L / S.
  • Reduce the emission of high GWP fluorinated greenhouse gases (F-GHG) with an efficacy of more than 98.5%.
  • More than 850 energy management proposals in 2020.
  • The annual electricity saving rate is 2.19%.
  • The photovoltaic power generation system on the factory rooftops have a total installed capacity of 42MW.
  • Taiwan's total solar power generation was reached 55.75 million KWH in 2020.
  • The Kunshan plant has generated 5.24 million kWh of renewable energy.

Innovative Low-carbon Production

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Innovative Low-carbon Production

Full implementation of F-GHG management (scope1)

Reduction of fluorine-based gas emissions(F-GHG), with high greenhouse gas emission potential in the process, reaching destruction removal efficiency over 98.88%


Signed a memorandum with the Environmental Protection Agency to reduce F-GHG emissions by installing destruction removal facility: Local Scrubber (L / S) for new fabs.


Voluntary commitment to install destruction removal facility: Local Scrubber (L / S) for all existing fabs.

  • All factories have installed L / S
  • The installation rate is 100%
  • Improve the performance of L/S
  • Assist customers to meet the highest standards of EPEAT
  • Applying artificial intelligence (AI) to improve the usage of F-Gas
Accumulated reductions and Emissions per unit area in PFCs

Greater Energy Efficiency

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Greater Energy Efficiency

Energy use and power saving goals
Continuous improvement of energy management (Scope2)

More than 500 energy management programs every year, exceeding the target annual energy-saving rate 1.5%.

AUO energy-saving effectiveness over the years

The power saving plans including actual investment and management actions contributed power saving rate over 1.5%.

Energy-saving from Management Improvement Projects (ten thousand kWh)
Energy-saving from Investment Projects (ten thousand kWh)

Promote Renewable Energy

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Promote Renewable Energy

  • Power from renewable energy
  • Green certifications
Rooftop Solar Power Plants in Taiwan factories
  • The installations of the solar power plants in all sites in Taiwan achieved a total installed capacity of nearly 42 MW.
  • The first TFT-LCD manufacturing company in Taiwan to obtain renewable energy certificates, with a total of 125 T-REC certificates.
Total installation

42 MW


18.5 hectares

25.8 football fields

Power generation

146,650 kWh / day

Electricity supply

14,665 households / day

GHG Reduction

28,248 tones CO2e / Year

72.6 CO2 absorption of Daan Forest Park in one year

Scope 3 GHG emission
Greenhouse Gas Management Milestone

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Historical GHG Emission
Scope 1
Million tones CO2e
Scope 2
Million tones CO2e
Scope 3
Million tones CO2e

Implementation Status

🅐Applicable to AUO, and has been quantified
🅑Applicable to AUO, and has not been quantified. AUO has plan or mgt. methods
🅒Applicable to AUO, but there is no quantitative plan.
🅓Not applicable to AUO
Purchased goods and services

Using previous product carbon footprint audit conducted by AUO as the basis to calculate the materials needed during production. While the main carbon emissions during the product raw material stage are used as the reference for calculating this item. The item includes glass substrate, liquid crystal, photoresist, developer, etchant, array stripper and thinner, etc.

🅐 721,696.53 tones CO2e

258,205 tones CO2e

362,028 tones CO2e

287,987 tones CO2e

121,639 tones CO2e

no plans to quantify

no plans to quantify

Capital goods

The company has not purchased a large amount of capital goods in recent years, and there is no quantitative plan for this project after evaluation.

🅒 Applicable to AUO, but there is no quantitative plan.

Fuel Energy Related(Non Scope 1 & 2)

Calculate AUO‘s energy consumption, including diesel, LPG, natural gas, electricity. Calculate fuel energy-related emissions resource with cradle-to-gate coefficient announced by the EPA.

🅐 572,489.11 tones CO2e

619 tones CO2e

608 tones CO2e

648 tones CO2e

520 tones CO2e

549 tones CO2e

514 tones CO2e

Upstream transportation and distribution

Materials needed for factory production (63!、65!、67!、68!) are included in the calculation, these include glass, PI spacer, Target, gas chemicals, etc. These will generate GHG emissions from the supplier‘s location (actual address or a representative factory is selected from the website). Transportation between the Company's factories is not included in the calculation.

🅐 18,665.52 tones CO2e

13,455 tones CO2e

3,717 tones CO2e

3,340 tones CO2e

no plans to quantify

no plans to quantify

no plans to quantify

Waste generated in operations

Calculate GHG emissions generated during the final waste shipping and treatment process including sludge waste, waste solvent, glass, acid, EAF dust, empty barrel, and hardware. If the aforementioned items have not reached at least 80% of the total waste disposal volume, items will be added to the calculation.

🅐 19,703.02 tones CO2e

7,574 tones CO2e

12,042 tones CO2e

2,943 tones CO2e

21,973 tones CO2e

25,089 tones CO2e

32,468 tones CO2e

Business travel

Calculate the greenhouse gas emissions of AUO colleagues through the business trip travel system; the individual emissions will be calculated according to means of transportation applied for reimbursement including airplanes, high-speed rails, rental cars, self-owned cars and taxis, etc.

🅐 909.46 tones CO2e

1,025 tones CO2e

756 tones CO2e

614 tones CO2e

1,047 tones CO2e

1,732 tones CO2e

1,796 tones CO2e

Employee commuting

Calculate the greenhouse gas emissions of all employees in the factory, including direct employees and indirect employee. Commutation to and from work and shuttle bus between factory areas, the shuttle bus for foreign nationality employees commuting to and from work are also included in the calculation.

🅐 47,932.54 tones CO2e

16,956 tones CO2e

20,207 tones CO2e

21,154 tones CO2e

19,387 tones CO2e

15,850 tones CO2e

19,438 tones CO2e

Upstream leased assets

This item is applicable to AUO; however, it has not yet established a pipeline platform for collecting information with the leasing unit, it is excluded according to the indirect emission materiality criterion.

🅓 Not applicable to AUO


AUO Crystal Corp. is a wholly owned manufacturing subsidiary of AUO. Since it conducts GHG audit every year, its emissions is included in the calculations.

38,578.99 tones CO2e

125,768 tones CO2e

143,411 tones CO2e

188,181 tones CO2e

203,220 tones CO2e

321,451 tones CO2e

163,529 tones CO2e

Downstream transportation and distribution

All products delivered by all the factories in the year (including the contractors‘ factories) are included in the calculation, but the transportation of front-end products to the OEM is excluded. GHG emissions are generated by land transport to the port or airport, or sea freight/air freight to the destination port/airport, but excluding transport between the factories and OEM factories.

51,853.97 tones CO2e

55,595 tones CO2e

69,525 tones CO2e

no plans to quantify

no plans to quantify

no plans to quantify

no plans to quantify

Processing of sold products

This item is applicable to AUO; however, since there is no accurate and mature methodology and information collection method at the present time, therefore, it is excluded according to the indirect emission materiality standards.

🅒 Applicable to AUO, but there is no quantitative plan.

Use of sold products

AUO is a B2B company and we do not manufacture end products, therefore it does not apply to this item.

🅓 Not applicable to AUO

14,742,004 tones CO2e

7,641,475 tones CO2e

1,225,409 tones CO2e

1,269,392 tones CO2e

906,133 tones CO2e

no plans to quantify

End-of-life treatment of sold products

This item applies to AUO, and relevant protocols have been evaluated and formulated. It will be included in future calculations.

🅓 Not applicable to AUO

Downstream leased assets

AUO is applicable to this project and has assessed and established a relevant methodology to be included in future calculations

🅑 Applicable to AUO, and has not been quantified. AUO has plan or mgt. methods

🅓 Not applicable to AUO