Value Chain Emissions Management

Carbon Reduction Commitments and Policies

Under its green management strategy, AUO endeavors to reduce its greenhouse gas emissions. All its factories worldwide passed the ISO 14064 verification every year. The Company insists on information transparency with regard to its value chain and creates value in a low-carbon way.

Innovative Low-carbon Production Greater Energy Efficiency Promote Renewable Energy
  • F-GHG volume reduction
  • Ecological benefits indicator management
  • Energy conservation efficacy verification
  • Smart energy monitoring and control
  • Power from renewable energy
  • Green certifications
  • Reduce the emission of high GWP fluorinated greenhouse gases (F-GHG) with an efficacy of more than 98.88%.
  • The indicator of GHG emissions per input sheet substrate area keeps falling, by more than 70% over the past decade
  • Each year 500 energy management action plans create an energy saving rate as high as 2.26% (2019).
  • The photovoltaic power generation system on the factory rooftops have a total installed capacity of 42MW
  • The first panel maker in Taiwan to obtain a renewable energy certificate.

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
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
Historical GHG Emission
Scope 1
Million tones CO2e
Scope 2
Million tones CO2e
Scope 3
Million tones CO2e
Purchased goods and services

Conducted self-inventory management since 2016 to identify the main raw materials including glass substrate, liquid cr ystal, photoresist, developer, etchant, stripper and thinner, etc., and reduce the environmental load through green manufacturing carbon emission reduction at the same time. The estimated missions in 2019 were 258,205 tonnes of 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
no plans to quantify
Fuel Energy Related(Non Scope 1 & 2)

Commission the transportation company to handle the shuttle bus transportation business between the factory area of the Taiwan factory area, and began to disclose the emissions since 2014, using the mileage of transportation vehicles and the carbon footprint database built by the Environmental Protection Administration to estimate. The estimate emissions in 2019 were approximately 619 tonnes of CO2e, and the main fuel used was diesel.

619 tones CO2e

608 tones CO2e

648 tones CO2e

520 tones CO2e

549 tones CO2e

514 tones CO2e

Upstream transportation and distribution

Continue to promote local procurement,packaging material recycling, increasing loading rate and composite transportation since 2008 to reduce carbon emssions generated by distribution through green operations planning. Expand the scope of inventory since 2018 to conduct carbon reduction quantification calculated based on the parameters of weight and transportation mode and distance on the transportation activities of major materials. The estimated emissions in 2019 were 13,455 tonnes of 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

Since 2011, we established the carbon emission information of waste removal, transportation and treatment manufacturers from our vendors. The inventory category includes major wastes such as sludge, waste solvents, glass, acid, dust collection dust, empty barrels, and hardware. 2019 Carbon emissions from waste treatment are estimated at 7,574 metric tons of CO2e, covering more than 89% of the total weight of Taiwan.

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

Start the management since 2010, with the audit and writeoff records of the Company's Global Travel System (GTS), and developed Value Chain Accounting (VCA) this year coordinated with the ICAO aviation carbon calculator to calculate the employee's air flight mileage and carbon footprint. Emissions in 2019 were estimated to be approximately 1,025 tonnes of 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 carbon emissions of employee commuting in the Taiwan factory area since 2014, and estimate the employee commuting methods, distances and generated carbon emmissions based on the average data from multiple transportation tools of cars and motorcycles surveyed by the internal questionnaire since 2019. The carbon emissions in 2019 were estimated to be approximately 16,956 tonnes of 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
Not applicable to AUO

Disclose the carbon emissions of major subsidiaries since 2015. The estimated emissions in 2019 were 125,768 tonnes of CO2e. Magnifying Glass Please refer to 3.4 Subsidiary Profile of this Report

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

In 2018, the carbon emission list for downstream product transportation and distribution was increased. The calculation method is the same as the upstream terms, which is calculated according to the parameters of the one-way weight of the product, including the transportation method and distance. The calculation scope includes the road transport carbon emissions from the factory area to the port and airport, and the total transport carbon emissions from sea, land and air transportation to the port and port. It was estimated to be 55,595 tonnes of CO2e in 2019.

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
no plans to quantify
Use of sold products

Calculate the carbon emissions generated during the phase of panel use since 2015, with the major products including television, mobile phones and laptop screens with shippment reached more than 80% as the statistics target, and the calculation rules refer to the usage scenario of each product's energy consumption design and operation mode. The estimated emissions in 2019 were 14,742,004 tonnes of CO2e.

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

Introduced green product designs to provide customers with recyclable solutions

no plans to quantify

Downstream leased assets

Leased premises of subsidiaries

no plans to quantify

no plans to quantify