Realization of a Sustainable and Environmentally Friendly Society▍Policy and Management
TAISEI Green Target 2050
Based on the Group Philosophy “To Create a Vibrant Environment for All Members of Society,” the Taisei Group has set forth in its
Environmental Policy and Environmental Targets, the formation of high-quality social capital through corporate activities centeredon the construction business in harmony with nature, aiming for the “Realization of a Sustainable and Environmentally Friendly
Society.” The Group also supports and respects the United Nations Global Compact and other internationally agreed initiatives on
the environment, and is proceeding with efforts in collaboration with various stakeholders.
The construction industry, which is involved in the formation of social capital, is built on the burden on the environment. On theother hand, environmental problems are becoming more and more serious on a global scale, and long-term countermeasures are
required. In response to these circumstances, in 2018 we revised our 2050 Environmental Targets (TAISEI Green Target 2050), andset the 2050 Targets for the realization of four societies: a decarbonized society, a recycling oriented society, a nature co-existingsociety, and a safety secured society. We also agreed with TCFD in 2020, and, following the Japanese government’s decarbonization declaration, partially revised the TAISEI Green Target 2050 and decided to aim for virtually zero CO2 emissions from businessactivities by 2050 to realize a decarbonized society.
Going forward, the Taisei Group members will work as one to continue contributing to the realization of a Sustainable andEnvironmentally Friendly Society (decarbonized society, recycling oriented society, nature co-existing society, safety secured
society) based on our 2050 Environmental Targets (TAISEI GreenTarget 2050).

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1 The Taisei Group Environmental Report 2021

KPIs
■ Realization of a Sustainable and Environmentally Friendly Society

We have identified “Realization of a Sustainable and Environmentally Friendly Society” as a part of Materiality (Important Tasks for
the Taisei Group), and this has been established as a principal policy in the Group Medium-term Business Plan (2021-2023). In
addition, we have established “–41% At construction stage Reduction of CO2 emissions per construction cost (intensity),”“–50% At construction stage Reduction of total CO2 emissions” and “–43% At building operation stage Reduction of designbuild estimated CO2 emissions,” as a KPI objective for FY FY2023. (Compared to FY1990)

Environmental Targets for FY2021 and result for FY2020
FY2020TAISEI Green
Target 2050

Annual Targets

At construction stage *1
Reduction of CO2 emissions per construction cost(intensity)
Decarbonized Society

CO2 emissions frombusiness activities
virtually 0

At construction stage *1
Reduction of total CO2 emissions
At building operation stage *1
Reduction of design-build estimated CO2 emissions(including dissemination and promotion of ZEB)

TargetValuesResultFY2021
TargetValues–27%–30.3%–36%–52%–54.5%–52%–40%–41.4%–41%–20%–22.4%–25%

10 items
per projector more11.7 items
per project

11 items
per projector more

KPI

KPI

KPI

Reduction of energy consumption per office floor area
(intensity)*2

Recycling Oriented Society

Adoption of green (environmentally conscious)
procurement items at building design stage

virtually Final disposal rate ofconstruction waste 0%

Reduction of final disposal rate of construction waste–3.4%
or less

Implementation of biodiversity conscious proposal

30 projector more38 project

35 projector moreImplementation of biodiversity conscious construction

10 projector more6 project

10 projector moreProper management of construction byproducts
and compliance with environmental-related laws
and regulations

Zeroenvironmental
accidents

Zero
environmental
accidents

Zero
environmental
accidents

Nature Co-Existing Society

Minimizing impact onnatural capital

–2.7%

–3.3%
or less

Safety Secured Society

Providing value withzero environmental risk
*1 compared to FY1990*2 compared to FY2010●KPI Key Performance Indicator

WEB*The Taisei Group made the “Eco-First Commitment” pledge to the Japanese Environment Minister tocarry out environmental conservation measures on a group-wide basis, and was officially approved as an“Eco-First Company”.

“Environmental Policy”, “Environmental Targets”, “Declaration of Taisei Corporation on Biodiversity Preservation”
https://www.taisei.co.jp/english/profile/philosophy/

2 The Taisei Group Environmental Report 2021

▍Promotion Framework■ Environmental Management System (EMS)

Taisei Corporation operates an environmental management system based on ISO 14001 (hereinafter EMS) on a companywide
basis, and has established the Environment Committee chaired by the President and administered by the Chief of Environment
Division.
The Environment Committee mainly deliberates on important environment-related initiatives for environmental managementthat lead to the Environmental Policy, Environmental Targets, and external evaluations, and makes reports to the Management
Committee. Matters such as Environmental Policy are deliberated in the Management Committee before being presented to theBoard, where they are deliberated and decided.
Every division and branch has an EMS secretariat that operates under the Environment Committee, and the environmental staff
of each department facilitates and monitors environmental activities, and reflects the results in annual Environmental Targets.
In January 2021, we established the subcommittee at construction stage to promote CO2 reduction in worksites, the subcommittee at building operation stage to promote decarbonization technologies and services, and the Taisei Group Environmental
Management Committee to establish Group targets and manage progress. In this way, we are developing our response to theissues in a way that transcends the boundaries of departments and group companies.
Also in May 2021, we further strengthened our structure to work on decarbonization by newly establishing the Carbon Neutral
Promotion Department in the Environment Division, with the objective of promoting and supporting the efforts of Taisei Corporationand our customers to achieve carbon neutrality by 2050.
Apart from the EMS and Environment Division organizations, we are also promoting efforts to resolve environmental issues by
establishing organizations such as the CSR Committee, Central Safety Committee, and the Energy-Saving Promotion Council
which is for appropriately responding to the Act on the Rational Use of Energy (Energy Conservation Act).

EMS (ISO14001) Organization Chart

ISO14001 certification Scope:
The head office and all 13 branch offices (certified rate: 100%)
Certification registered in 1998

Environment Committee

Subcommittee atconstruction stage

Company-wide EMS

Subcommittee at building
operation stage

Head Office EMS

Taisei Group Environmental
Management Committee

EMS of each branch■ TAISEI Sustainable Action (TSA), an Initiative to Reduce Environmental Impact

To achieve its Environmental Targets, Taisei Corporation is implementing TAISEI Sustainable Action (TSA), an environmental
impact-reduction initiative in which all employees participate.
We think it is particularly important for many parties involved in construction work, which represents a large part of the CO2
emissions from business activities, to be aware of the importance of reducing environmental impact. Therefore, in addition to the
CO2 Zero Action, which is our basic initiative that has been conducted at all worksites so far, each worksite is implementing
measures based on the TSA Action List in which effective specific technologies and activities are presented.
In 2020, we developed and adopted the TSA Points System to evaluate each worksite’s initiatives to reduce environmental
impact by points. This system evaluates by points initiatives at worksites leading to the reduction of environmental impact, such as
the use of fuel-efficient heavy machinery, training seminars on fuel-efficient driving, use of LED lighting, and use of energy-saving
copiers and air conditioners, and visualizes the impact of the initiatives of individual worksites. We will bring about a change in
employees’ awareness and behavior by visualizing and quantitatively evaluating the impact of initiatives, in order to further promote
TSA initiatives.
In addition, we have established an award system for activities aimed at achieving the Environmental Targets. Through thissystem we evaluate activities to reduce environmental impact that serve as a model for other divisions, and we work to raise
employees’ environmental awareness.
* TAISEI Sustainable Action (TSA)
Company-wide activities to reduce environmental impact including fuel-efficientdriving of heavy machinery and vehicles, use of hybrid heavy machinery andrenewable energy, development of a wellness conscious greening environment,
paperless meetings, and use of LEDs for temporary lighting.

* CO2 Zero Action
An initiative to reduce environmental impact undertaken by all
worksites. There are seven actions, including eco-driving ofheavy machinery and vehicles, inspection and maintenance,and controlling the temperature setting of air conditioners.

3 The Taisei Group Environmental Report 2021

■ Compliance with Declarations to Society and International Codes of Conduct, etc.

TCFD, SBT, CDP
Taisei Corporation strives to improve its environmental performance by steadily carrying out activities based on its Environmental
Policy, and by actively disclosing information through the Sustainability website, the integrated report, and other means. We strive
to increase the trust of our stakeholders, and deliver value to them and create sustainable business opportunities. In July 2020,
the Company agreed with TCFD (Task Force on Climate-Related Financial Disclosures) and decided to actively disclose
information on the impact of climate change on its business activities.
We also participate in environment-related initiatives such as the Science Based Target (SBT) and the Carbon Disclosure
Project (CDP).
In addition, we are selected as an “A List” company and “Supplier Engagement Leader” by CDP on 2020.
WEB“CDP’s Climate Change A List 2020” https://www.taisei.co.jp/english/ir/news/2020/20201209_release.html

United Nations Global Compact (GC), SDGs
The Taisei Group participated in the GC in April 2018 and committed to disseminating and implementing the Ten Principles in thefour areas of human rights, labor, the environment, and anti-corruption. At the same time, it is actively participating in various
subcommittees sponsored by the Global Compact Network Japan (GCNJ), such as the Subcommittee on SDGs and the Subcommittee on Human Rights Due Diligence (HRDD), the Subcommittee on Circular Economy. In addition, in order to promotebusiness as a member of the construction industry while always being aware of contributions to SDGs, we are working to ensurethat SDGs are widely disseminated within the Group and discussing how to reflect them in our business strategies, and the like.

Keidanren (Japan Business Federation) / Nikkenren (Japan Federation of Construction Contractors)
As a member of Keidanren, we respect the content of its Charter of Corporate Behavior and carry out activities toward the“realization of a sustainable society,” which Keidanren aims to achieve. We also participate in the Committee on Environment and
Safety, Keidanren Biodiversity Declaration Initiative, the “Challenge Zero” initiative and “Japan Partnership for Circular Economy”
initiative Global Warming Countermeasure Subcommittee, and Environment Management Subcommittee, which are tackling global
warming countermeasures and the formation of a recycling-based society.
We are also on the Nikkenren’s taskforce for Voluntary Action Plan on the Environment in Construction Industry, and on its
Construction Byproduct Taskforce and Civil Engineering Byproduct Taskforce which contribute to the effective use of resources.
In this way, we share information and engage in collaborative initiatives with other companies, thereby contributing to the environmental activities of the construction industry as a whole. In 2014, Nikkenren set construction industry CO2 reduction targets for2030 and joined Keidanren's Phase II of the Commitment to a Low Carbon Society.
In May 2021, the Voluntary Action Plan on the Environment for the Construction Industry was revised to establish targets that
include reducing Scope 1 and 2 emissions at the construction stage to effectively zero by 2050. As a member company, Taisei
strives to achieve the targets established by the Japan Federation of Construction Contractors.

Taisei Corporation's Eco-First Commitment
The Eco-First Program is an initiative launched by the Ministry of the Environment that certifies companies with leading environmental practices. Taisei Corporation has been certified as an “Eco First Company” based on the Eco First Commitment made with
the Minister of the Environment in May 2012. The commitment has been renewed thereafter and initiatives have been pursued
toward its achievement.

■ Disclosure of Information on Environmental Area

Taisei Corporation strives to improve its environmental performance by steadily carrying out activities based on its Environmental
Policy, and by actively disclosing information through the Sustainability website, the integrated report, and other means. We
strive to increase the trust of our stakeholders, and deliver value to them and create sustainable business opportunities. In July
2020, the Company agreed with TCFD and decided to actively disclose information on the impact of climate change on its
business activities.
WEB“Information Disclosure Based on TCFD (Task Force on Climate-Related Financial Disclosures) Recommendations” https://www.taisei.co.jp/english/csr

4 The Taisei Group Environmental Report 2021

Supply Chain (Environment)▍Policy and Management
The Taisei Group has established “Promoting partnerships with subcontractors and suppliers” in its Group Action Guidelines. Thisentails clarifying mutual roles and responsibilities with subcontractors and suppliers, establishing relationships that are fair andachieve mutual trust, and selecting subcontractors and suppliers in a rational manner through a comprehensive assessment ofprice, technical capabilities, financing capacity, social credibility as a company, consideration for the environment and other factors.
Taisei works to promote Zero Energy Buildings (ZEB) and provide other decarbonisation technologies and services to customers.
In addition, we share policies with affiliates and work with them to reduce CO2 emissions at construction workplaces, as part ofour practical initiatives aimed at decarbonizing the entire value chain. Since 2001, we have established and employed Taisei Green
Procurement Guidelines for the use and promotion of environmentally friendly construction materials and techniques in the design,
construction, use and decommissioning of structures. The content to be observed by suppliers is provided in the form of our CSR
Purchasing Guidelines which were established in 2014. The guidelines were revised in 2020 to further clarify the sections relating
to human rights and the environment due to increased interest in these matters on the part of the general public.
WEB“CSR Purchasing Guidelines” https://www.taisei.co.jp/partner/csr.html▍Promotion Framework● Monitoring

The Taisei Sustainable Action (TSA) program works to reduce environmental load at the construction stage in all domestic andsome overseas workplaces. Through this program, Taisei works with numerous affiliates in the supply chain to pursue its CO2 Zero
Action initiative on a daily basis in seven areas that include reduced energy consumption, use of rainwater and fuel-saving operation of heavy machinery and other vehicles. Specific effective technologies and activities are identified in a “TSA Action List” for use
in implementing policies at individual workplaces.
In 2020, Taisei established the Taisei Sustainable Action (TSA) Point System, the first of its kind in the construction industry,
which establishes specific implementation items and a menu of targets for specific technologies and activities that are known tobe effective. CO2 reduction initiatives are assigned points and the implementation status at each workplace is clearly indicated.
A high score is assigned to the adoption of methods that are highly effective in reducing CO2 emissions, such as the use ofenergy-efficient heavy machinery. The system is expected to aid in risk assessment and promote effective activities to achieveenvironmental targets.
● Supplier Engagement Leader

We also participate in environment-related initiatives such as the Science Based Target (SBT) and the Carbon Disclosure Project(CDP).In addition, we are selected as an “A List” company and “Supplier Engagement Leader” by CDP on 2020.
WEB“Supplier Engagement” https://www.cdp.net/en/research/global-reports/transparency-to-transformation#supplier-engagement● Utilizing the Green Procurement Guideline in Cooperation with Suppliers
ReportSee the Taisei Group Environmental Report 2021 p.11 For Realization of a Recycling Oriented Society● ISO14001/ISO9001
WEB“Consumer Issues” https://taisei.co.jp/english/sustainability/iso26000/consumer/

5 The Taisei Group Environmental Report 2021

ISO26000 The Environment

For Realization of a Decarbonized Society▍Policy and Management
Taisei Corporation has set the achievement of virtually zero CO2 emissions from business activities as one of the 2050 Targets in its
2050 Environmental Targets, TAISEI Green Target 2050, aiming to reduce CO2 emissions and contribute to the realization of adecarbonized society.
Our two targets for 2030, which are the benchmarks of the TAISEI Green Target 2050, have been certified by the SBT initiative:
one is the 62% (vs. fiscal 1990) CO2 emissions reduction target at the construction stage, and the other is the 55% (vs. fiscal 1990)
CO2 emissions reduction target at the building operation stage.To achieve the CO2 reduction target at the construction stage, weare promoting initiatives to reduce the environmental impact (TSA) in which all employees participate,
as well as initiatives such as cooperating with specialized contractors (suppliers) and encouraging them to conduct conservation activities during construction and use heavy machinery and vehicles with high energy efficiency.
In addition, we have been working to use ZEB as a temporary worksite office that had not been considered as a target ofenergy conservation/ CO2 reduction initiatives due to its short usage period. In 2020 we obtained ZEB Ready certification for the
first time in Japan for a temporary worksite office, and due to this initiative we were awarded the Special Award from the Judging
Committee in the Energy Conservation Grand Prize program of the Energy Conservation Center, Japan (ECCJ).
For achieving the CO2 reduction target at the building operation stage (for use by customers), we are promoting the provision ofadvanced energy conservation and ZEB technologies and accumulating construction results, while working with customers andother various stakeholders in the value chain. At the Taisei Group, we are implementing initiatives to reduce CO2 emissions at eachphase of the value chain from the planning/design stage considering the lifecycle of the building, through the construction stage
including new building construction, renewal and demolition, to the operation stage after completion and delivery to the customer,
for the realization of a decarbonized society.
Risks and Opportunities
For the construction industry, rising temperatures in recent years, large-scale typhoons, and disasters caused by extremely concentrated
heavy rain pose risk factors such as interruptions and delays in construction work. On the other hand, increased demand for net zero energy
buildings (ZEB), which is a measure to mitigate climate change, will lead to the creation of opportunities for orders. Taisei Corporation
supports the Challenge Zero project of Keidanren (Japan Business Federation). In the field of renewable energy, it is working on ZEB andbegan technological development for floating offshore wind power generation facilities. In addition, we consider the green infrastructure
promoted by the Ministry of Land, Infrastructure, Transport and Tourism as a means of mitigating and adapting to climate change as one ofthe opportunities to receive orders through our market expansion aimed at strengthening infrastructure, and we are promoting relevant
technological development and design proposals.

2030 Targets Certified by the SBT initiative
By 2030, reduce the Scope 1 and Scope 2 greenhouse gas emissions by 26% fromfiscal 2013 levels (62% reduction from fiscal 1990 levels), and the Scope 3 emissions
by 25% from fiscal 2013 levels (55% reduction from fiscal1990 levels)

SBT initiative:
Founded in 2015, this organization (initiative) requires
companies to establish “Science Based Targets(SBT)” to contribute to the Paris Agreement, which
has set the goal of limiting temperature increase toless than 2°C above the pre-industrial level.

Scope 1: D
 irect emissions associated with fuel use for heavy machinery and vehicles atconstruction worksites
Scope 2: Indirect greenhouse gas emissions associated with electricity use at construction
worksites
Scope 3: Indirect emissions associated with energy use during the operational phase of thebuilding deliveredWEB

SBT initiative https://sciencebasedtargets.org/companies-taking-action/▍Promotion Framework■ EMSʼs Organizational (EMS)

Taisei Corporation operates an Environmental Management System (EMS) based on ISO14001 on a company-wide basis. We
have established an Environmental Committee, chaired by the President, which deliberates and decides on environmental policy
and environmental targets that are important for environmental management, in addition to medium- and long-term targets andenvironment-related initiatives that lead to external evaluations.

6 The Taisei Group Environmental Report 2021

● TAISEI Sustainable Action (TSA)

An Initiative to Reduce Environmental Impact
To achieve its Environmental Policy and Environmental Targets, Taisei Corporation is implementing TAISEI Sustainable Action (TSA),an environmental impact reduction initiative in which all employees participate. In proceeding with this initiative, it is particularly
important for many parties involved in construction, which has high CO2 emissions, to be aware of the importance of reducing
environmental impact. Therefore, in addition to the “CO2 Zero Action,” which is our basic initiative that has been conducted at all
worksites so far, effective specific technologies and activities are summarized in the “Action List,” and the materials, products andtechnologies used are explained in an easy-to-understand manner with photographs. In addition, the Company has established anaward system for activities aimed at achieving the Environmental Targets.
Through this system we evaluate activities to reduce environmental impact, which serves as a model for other divisions, and wework to raise employees’ environmental awareness.

● Acquired ZEB Ready Certification for the New Itami City Hall and Its Temporary Worksite Office, the First of

Its Kind in JapanThe construction of the new city hall building has been planned aiming for an environmentally friendly city hall under the concept
of “a city hall that is full of dreams and attractiveness and supports a safe and secure life of residents.”
Kengo Kuma & Associates, the architect office that was in charge of the basic design, set a design concept of “achieving
ZEB Ready certification as a large-scale city hall building over 20,000 m2 while overcoming various challenges that the reconstruction project faces, such as reconstructing the city hall utilizing the existing building, conceiving a design in consideration of regional
development and scenery, BCP, and seismic isolation.” Taisei Corporation received the order for this project in a design-build (DB)method, taking charge of execution design through construction.
In addition to its being planned as a highly heat-insulated and well-sealed building capable of natural lighting and ventilation, thecity hall also generates power as it equipped with a photovoltaic facility with a storage battery for disasters, achieving a 54%
reduction in energy consumption in total. Thanks to the above measures, this project was adopted as one of the “resilience-enhancement type ZEB demonstration projects” of the Ministry of the Environment.
Meanwhile, in line with the environmentally friendly concept of the new city hall, we also worked on reducing CO2 emissions
during construction. The temporary worksite office in construction work adopted versatile energy-saving technologies, such as ahigh-efficiency air conditioning system, LED lighting, and heat pump water heater. These technologies, in addition to an improved
heat insulation capacity, contributed to the 54% reduction in primary energy consumption compared to a standard building.
Due to these measures, for the first time in Japan, not only the permanent city hall building but also the temporary worksite
office obtained ZEB Ready certification.

ZEB ReadyA building that meets 50% or more reduction in primary energy consumption from the standard primary energy

Building Energy-efficiency Labeling System(BELS) Certification
A third party accreditation system established by
the Ministry of Land, Infrastructure, Transport andTourism to assess and display building energysaving performance, etc.

The new city hall obtained
ZEB Ready certification
under BELS

New Itami City Hall

The temporary worksite
office obtained ZEB Readycertification under BELS

7 The Taisei Group Environmental Report 2021

● Promoting Green Infrastructure as a Measure for Adapting to Climate Change

In the Shinagawa Season Terrace, a multi-purpose building that makes effective use of the upper part of the Water Reclamation
Center, we built a reservoir for rainwater in the basement of the Center, in order to temporarily store water during the early stagesof heavy rain, to prevent polluted water from flowing directly into the sea. The building demonstrates other multifaceted functionsof green structures, including the creation of a wide open green space situated on artificial ground constructed above the ground,
reduction of the heat island effect on the city by using this greenery to cool wind from the Tokyo Bay before sending it into the city
area, and conservation of biodiversity by fostering new ecosystems through waterfront creation using rainwater.
Green Infrastructure:
Efforts to promote the creation of sustainable and attractive national land, cities, and regions by utilizing the diverse functions of the natural environment in terms of both hardware
and software, such as social infrastructure development and land use. As countermeasures against climate change, there are measures to improve ground surface coverage by
optimizing national land

management, conserving green areas and promoting greening, measures to absorb CO2 by utilizing green areas and seagrass beds, measures to store

and infiltrate rainwater by utilizing soil and permeable pavement, and heat mitigation measures that utilize the transpiration effects of planting.

● Renewable Energy Projects

Taisei will promote initiatives relating to both land-based wind power generation and offshore wind power generation projects ingeneral ocean areas, both of which are expected to be introduced and expanded in the future.

Wind power generation projects• Proposed offshore wind power generation project in northern Niigata Prefecture
Taisei is currently conducting a feasibility study for an offshore wind power generation installation to be constructed off the coast ofnorthern Niigata Prefecture. A Document on Primary Environmental Impact Considerations was sent to the Minister of Economy,
Trade and Industry on June 3, 2019, in accordance with the Environmental Impact Assessment Act and the Electricity Business
Act, and the Minister’s opinion was received on August 26 of that year.
• Promotion of technical development accompanying the project＜Technologies for simulating windmill backwash and turbulence＞
In developing wind power stations, it is important to be able to accurately predict the amount of power that will be generated.
Depending on the placement of windmills, the backwash from windmills on the upwind side may attenuate and reduce the power
generated by windmills located downwind. This may also cause an unbalanced wind load that causes windmill failure. Taisei ispursuing the development of technologies to simulate these phenomena.
＜Development of concrete foundations for floating offshore wind generation facilitie＞
On October 10, 2019, Taisei Corporation and the French company Ideol signed a Memorandum of Understanding for the joint
development and promotion of floating foundations for floating offshore wind generation facilities for the Japanese market, using
Ideol's patented Damping Pool® technology.

Geothermal power generation projects
Japan ranks third in the world in terms of number of volcanos, and it has tremendous potential for geothermal energy development.
Taisei Corporation is involved in the development and administration of the following geothermal power generation projects as apurely domestic energy source developed using Japanese resources.

Biomass power generation projects
The fuels used for biomass power generation are environmentally friendly carbon-free resources that include wood, sewage sludge,
domestic livestock feces and urine and food residue. Taisei is involved in the following biomass power generation projects thatincorporate combustion methods and various types of fuels.

8 The Taisei Group Environmental Report 2021

● Energy Services

Energy supply projects (ESP)
Taisei Corporation has conducted mixed-use development projects and established Energy Centersat production facilities, and is participating in projects to supply electricity and heat. Heat source andother energy supply equipment is centralized to optimize the overall energy supply and achieve*1BCP:
Business Continuity Plan
*2DCP:
District Continuity Plan

advantages for building owners, including in terms of Business Continuity Planning (BCP)*1 and Data
Continuity Planning (DCP)*2.

Energy Management (EM) Projects
Taisei analyzes and evaluates policies for the operation of building heat source equipment and the use of building energy, etc., andprovides advice to ensure that energy use is always rational.

Energy Support Projects
Taisei provides support for building energy management to ensure that energy-saving performance is being achieved during theoperation of Zero Energy Buildings and other buildings. The degree of achievement of energy conservation is reported in energy
reports.
● Next-Generation Energy

Use of hydrogen
Hydrogen is being called a purely domestically produced energy source that can be stored on a long-term basis. It is seen as anext-generation energy resource that can be used for power generation using fuel cells and as thermal energy.
— Metal hydride (MH) can be used to absorb hydrogen at low pressure in order to transport the hydrogen safely. Taisei is participating in a project to verify hydrogen
supply chains that utilize this technology.

• Participation in proving test of low-pressure hydrogen delivery system
Taisei is participating as one of the leading companies in the Environment Ministry's low-carbon hydrogen technology verification
project conducted with regional cooperation (FY 2018) in Muroran City, Hokkaido.
● Development of “environmentally friendly concrete”
ReportSee the Annual report 2021 p.40

CO2 Emissions by Business (Non-Consolidated)

Prediction of CO2 emissions in the building operation
stage and reduction percentage (Non-consolidated)

CO2 emissions ■Office ■Construction site (civil engineering) ■Construction site (building)(103t-CO2)

CO2 emissions(103t-CO2)

261 26710
245 11

150

300

200

12

231 11CO2 emissions 113
at theconstruction stage

10

124

148

TAISEI Green Target 2050
Reduction targets of CO2 emissions
at the construction stage(vs FY1990 level)
FY2020216
206 Results
FY2030
- 62%

133
140

50
0

106

102

124

0

200

211

FY1990 criterion
453 (10³tCO2)

23

20

51

46
24

17

2016

2017

2018

10

196

195

188

20

191

40

2016 2017 2018 2019 2020

25

15

2019

72
42

2020 (FY)● Predicted CO2 reduction percentage
（%）

0

100
0

32

30

84

FY2050- 100%(kg-CO2 / mil. yen)

300

60

・Predicted CO2 emissions increased as target calculation range expanded from FY2016.

66● CO2 emission intensity

Emissions per unit floor area ●(kg-CO2 / year.m2)

56

100

100
110

■Calculated value based on 1990 criterion■Predicted CO2 emissions

(FY)

38.9

2016

48.1

2017

9 The Taisei Group Environmental Report 2021

40.2

39.5

2020
Target
value
40.0

2018

2019

2020

41.4

Targetvalue
41.0

2021 (FY)40
200

ISO26000 The Environment

For Realization of a Recycling Oriented Society▍Policy and Management
The Taisei Group has set forth “Promoting environmental conservation and creation” in the Action Guidelines for Taisei Personnel
and the Taisei Group as aWhole, and clearly stated that it endeavors to reduce environmental impact through the implementationof energy-saving measures and the “3R” policy (reduce, reuse and recycle) and propose technologies and ideas that will facilitate
the creation of new environments.
As one of the 2050 Targets, Taisei Corporation has committed to achieve the “final disposal rate of construction by products of
0%” in its 2050 Environmental Targets, TAISEI Green Target 2050. To achieve this target, we aim to reduce the final disposal rate
to 3.0% or less by 2030. We ensure thorough compliance with laws and regulations of countries where we operate, and work on
setting requirements higher than legally mandated. Based on the understanding that reducing pollutant and waste emissions is a
corporate social responsibility, we are aiming to achieve the 0% final disposal rate of construction byproducts from our construction business, through reducing and recycling such byproducts, promoting green procurement, and extending the life ofbuildings.
Risks and Opportunities
There is a growing need to promote sustainable procurement throughout the supply chain, such as resource conservation, use ofmaterials that can be recycled and reused, and measures to deal with the problem of sinhle-use plastics and other natural environmental
pollution caused by waste. At Taisei Corporation, we are working on waste management and the recycling of resources at worksites,
adopting materials and equipment that take into account green procurement and the lifecycle from the design stage, and providing
technologies to extend the life of buildings.

▍Promotion Framework■ EMSʼs Organizational (EMS)

Taisei Corporation operates an Environmental Management System (EMS) based on ISO14001 on a company-wide basis. We
have established an Environmental Committee, chaired by the President, which deliberates and decides on environmental policy
and environmental targets that are important for environmental management, in addition to medium- and long-term targets andenvironment-related initiatives that lead to external evaluations.
● Effective Use of Waste Plastics

Construction materials, packaging materials, and other waste
plastics are sorted thoroughlyand properly recycled by specialized
disposal companies.
In addition, we are implementing measures to utilize waste
plastic by combining it with waste wood products and creating
artificial recycled wood products.

Sortingresources

Recycling
resources

Reusingresources

Sorting and collectionof waste plastics

Dissolving Styrofoam(foam material)

Using recycled wood
•Louver (photograph)•Walking decks, etc.

Taisei Corporation supports the Plastics Smart Campaign by
the Ministry of the Environment.

*Plastics Smart
A campaign by the Ministry of the Environment to promote “a smart way of dealing with plastic” nationwide,
including thorough elimination of littering and illegal dumping, and thorough reduction of single-use plastic
and sorting and collection.

10 The Taisei Group Environmental Report 2021

● Utilizing the Green Procurement Guideline in Cooperation

with Suppliers
In 2001, Taisei Corporation established and put into effect the Taisei
Corporation Green Procurement Guideline to promote theuse of materials, equipment and building methods that have small
environmental impact during the design, construction, operation anddemolition of structures.
We also conduct target management on green procurement items,
and the number of items adopted in fiscal 2020 was 11.7 items.
By referring to and reflecting the content of the Green Purchase
Law (Act on Promotion of Procurement of Eco-Friendly Goods

Adoption of Green Procurement Items(Construction design phase: non-consolidated)
Other items 9%

Facilities 58%

Greening of roofs,etc.

LED light
Automatic faucet
Western-style toilet
Automatic cleaning
equipment andbuilt-in urinal
Electric toilet seat
Highly efficienttransformer, etc.

Structural items 11%
Recycled steel
materials
Plywood form
High-strength
concrete, etc.

Details of
Adopted Items

Construction items 22%

and Services by the State and Other Entities), we review the subject
items every year. In fiscal 2020, 94 items were included in the guideline.
Company-wide application of the guideline means we can not only
recycle resources but also save energy, reduce CO2 emissions, save

Heat insulating materials
Vinyl flooring
Heat insulating sash/door
Metal blind
Ceramic tile, etc.

resources, avoid use of toxic substances and preserve the naturalenvironment.

Award The “Program for the Promotion of Resource Recyclingof Building Materials through More Advanced Collection
Patrol Systems” Received the Ministry of Economy,
Trade and Industry’s Industrial Technology andEnvironment Bureau Director’s Award

We operate a “collection patrol system” for many types of waste, including waste plastics at our construction sites in Tokyo. We received theMinistry of Economy, Trade and Industry’s Industrial Technology andEnvironment Bureau Director’s Award in the 2020 Resource Recycling
Technology and System Awards for a joint initiative for resource recycling of building materials between Taisei Corporation and our consolidated subsidiary and logistics operator Network Alliance Corporation.
We are working to recycle soil from construction sites within and acrossworksites, and contributing to waste reduction and effective resource
use of the industry as a whole.

Quantity of Construction Waste (Non-Consolidated)（103t）
3,000
2,500
2,000
1,500
1,000

■Quantity recycled ■Quantity of final disposal( ) is the quantity excluding polluted mud and specially controlled industrial waste

2,644（1,644）
2,411
2,415
116
（1,268）（1,658）
（105）
95
128
2,020
（59）
（74）
（973）
1,787
96
（1,066）
（88）
71
（51）
2,528
2,320
（1,599） （1,539）

1,924
（886）

2,283
（1,194）

1,715（1,016）

500
0

2016

2017

2018

2019

2020 (FY)

Provide collection vehicles withefficient collection routes

Travel around construction sites
to collect wastes

Transport wastes to recycling plants, etc.
Promotematerial recycling
as raw materials
for products

The flow of waste collection

Emissions and Recycling Rateby Construction Waste Category
Civil
Construction waste engineering

Unit: 103t

Building construction
New
construction Demolition Subtotal

Total

Recyclingrate

Concrete remnants

121

196

309

505

625

100%

Asphalt concrete remnants

50

114

17

131

182

100%

Construction site
sludge

401

287

11

298

698

—

Mixed waste

12

32

4

36

48

70.7%

Wood scrap

10

9

2

12

22

95.0%

Metal scrap

2

14

14

28

30

99.4%

Miscellaneous

76

80

26

106

182

74.0%

Total

671

732

384

1,116

1,787

—

11 The Taisei Group Environmental Report 2021

For Realization of a Nature Co-Existing Society▍Policy and Management
The Taisei Group has set forth “Promoting environmental conservation and creation” in the Action Guidelines for Taisei Personnel
and the Taisei Group as a Whole, and clearly stated that it recognizes the importance of environmental issues and actively works
to promote environmental conservation and creation with a view to realizing a harmonious coexistence between nature and humanbeings.
As one of the 2050 Targets, Taisei Corporation has committed to “minimizing impact on natural capital” in its 2050 Environmental
Targets “TAISEI Green Target 2050.” To achieve this target, we set the goal of implementing 35 or more proposals that take biodiversity into consideration, using such means as our unique biodiversity evaluation tools, the Concierge Series. We identify risks at
the construction planning stage and, through the cooperation of related internal departments including the design division, construction/civil engineering work division and the Taisei Advanced Center of Technology, use the various technologies owned by the
Taisei Group to minimize the adverse impacts on biodiversity of the local area. In order to clarify its corporate stance on the conservation and creation of biodiversity, Taisei Corporation has agreed to the Declaration of Biodiversity by Keidanren, and formulated
the Declaration of Taisei Corporation on Biodiversity Preservation in 2010. Since 2020, we have been supporting Declaration of
Biodiversity by Keidanren and Action Policy (revised edition).
Risks and Opportunities
There is concern that construction work will always have a significant impact on the surrounding environment, including nature. At theplanning stage, we identify risks, including violations of environmental laws and regulations, and opportunities to create added value. From
the design and construction stage to the operation and management support after completion, we provide our customers with solutions that
help create a rich environment while giving consideration to biodiversity.
We will contribute to the realization of a society in harmony with nature by appropriately evaluating the value of natural capital, utilizing it
for infrastructure development and building planning, and minimizing the impact of construction work.

WEB“Declaration of Taisei Corporation on Biodiversity Preservation” https://www.taisei.co.jp/english/profile/philosophy/policies/▍Promotion Framework■ EMSʼs Organizational (EMS)

Taisei Corporation operates an Environmental Management System (EMS) based on ISO14001 on a company-wide basis. We
have established an Environmental Committee, chaired by the President, which deliberates and decides on environmental policy
and environmental targets that are important for environmental management, in addition to medium- and long-term targets andenvironment-related initiatives that lead to external evaluations.
● Biodiversity-Conscious Research, Planning, Construction and Monitoring

Taisei Corporation has adopted mechanisms for identifying risks relating to biodiversity at the construction planning stage andfollowing up on them throughout the entire process from construction through completion. For projects in which consideration forecosystems needs to be emphasized, Ecological Planning — Taisei's proprietary environmental planning technique — is employed
to propose appropriate conservation measures to the client based on research and analysis, such as plans that contribute tocoexistence with nature, in order to achieve preservation and restoration of suitable natural environments.
Ecological Planning is the equivalent of the Biodiversity Action Plan (BAP) in the Convention on Biological Diversity. Taisei uses
its various technologies to study and analyze the environment at the construction site and the surrounding area, and then drafts
and executes a plan based on regional characteristics in an effort to construct good quality social capital. Monitoring is conductedfollowing completion and the results are used as feedback for technological improvement.
Taisei has also developed the Concierge series of proprietary biodiversity assessment and planning tools. These tools allow
anyone to easily determine the environment at construction sites and share this information to appropriately preserve and create
natural environments. We also conduct monitoring and predictive assessments. In 2020, Taisei developed Mizube (waterfront)
Concierge, the third in its Concierge series of tools following Ikimono (living creatures) Concierge and Mori (forest) Concierge.
Deploying these tools for projects in which endangered species need to be protected will help to achieve a society that is inharmony with nature.

12 The Taisei Group Environmental Report 2021

Award Initiatives for Nature in Fujisan Nanryo Industrial Park Received the Environmental Award of the Japan
Society of Civil Engineers and ENAA’s Engineering Commendation Award

TaiseiCorp.
Fund/technologies
Activity

Environmental 12 enteredprogramcompanies
Fund

Regional
Fujinomiya field
NPO
City Provision

10-year Internurturing actionof forests

Environmental
programUnder the theme of “a manufacturing basewhere greenery, people and production
come together,” Taisei Corporation iscarrying out the Fujisan Nanryo Industrial
Park (Eco-Factory Mt. Fuji) development
project in Fujinomiya City located at thesouth foot of Mt. Fuji.

Fujisan Nanryo Industrial Park
Development Project

Developing the Fujisan Nanryo no Mori
FSPJ scheme, a sustainable action to nurture forests in collaboration of industry,
Tokohagovernment, academia, and local people, we have supported nurturing forests for
Univ.
more than ten years from completion of construction. This is a pioneering initiative
to balance economic activity and harmonious coexistence with nature in that it
adopts forest nurturing methodology from a medium- to long-term perspective and business model with forest as its theme.
We intend to utilize and deploy this as a tool to realize a nature co-existing society. This initiative was praised externally, andreceived the 2020 Environmental Award of the Japan Society of Civil Engineers (Group-2) and the 2020 Engineering
Commendation Award of ENAA (Environmental Contribution).
AdviceLocal
residents● Biodiversity Conservation and Cases

Long-term monitoring survey• The Sapporo DomeIn the construction of the Sapporo Dome, which was completed in 2001, right from the planning stage, we used our environmental
planning technology to plan an external structure that emphasized the conservation of biodiversity. The technology employed inthis project was Ecological Planning, Taisei Corporation's proprietary environmental planning tactics, which facilitates the design ofspaces that preserve the region's inherent ecosystems from the planning stage.

In order to verify that the environment is actually inhabited by various types of living creatures, we have conducted long-termmonitoring surveys based on the number of species of birds, butterflies, dragonflies, and other creatures, from the planning stage
in 1997 to the completion of construction in 2001, at both 3 years and 10 years after construction, and also in the present day.
Knowledge and concrete results accumulated during this process have been used for the development of the biodiversity
communication tools, such as “Ikimono Concierge” and have contributed to the conservation and sustainable use of natural
resources through various environmental awareness activities conducted by Sapporo Dome Co., Ltd.
These initiatives were recognized as “Sapporo Dome ECOMOTION and Taisei Ecological Planning” as an affi liated project of
the “Japan Committee on UNDB “Japan Committee on UNDB(United Nations Decade on Biodiversity).
Number of species confirmed by biological monitoring
1997
Beforeconstruction

2001
Year ofcompletion

23

10
5
18

■ Number of speciesof birds■N umber of speciesof butterflies■N umber of speciesof dragonflies

82015
15th year after
completion

13 The Taisei Group Environmental Report 2021

15
38
35
30

Improvement of Facility Value through Biodiversity Conservation and Creation• The ESR Amagasaki Distribution Center
An environmental certification that proves natural environmental consciousness of a facility increases the value of the facility andappeals to customers as proof of an environmentally conscious company.
Leveraging its strength as a general construction firm capable of executing projects from start to finish, from the planning anddesign of facilities to their construction, Taisei Corporation conducts environmental assessments of projects, including the impact
on biodiversity, from the early stages of development planning, and incorporates consideration for the environment into projectplans. In so doing, we strive to minimize environmental impacts and support our clients' environmental activities, such as theconservation and creation of biodiversity as well as the acquisition of environmental certifications.
At the stage of planning and design of the ESR Amagasaki Distribution Center (ordered by ESR), a logistic facility located at the
Osaka bay-side area, for example, an outer green area was planned, designed, and constructed by Taisei Corporation to help
improve the biodiversity without affecting capabilities as a logistics facility.
The facility earned the “Business Innovation in Harmony with Nature and Community” certification from the Association for
Business Innovation in Harmony with Nature and Community (ABINC) as a logistics facility that respects biodiversity.

ESR Amagasaki Distribution Center (ordered by ESR)

• Eco Globe Kure Biotope (Kure City, Hiroshima)
The general waste final treatment plant, Eco Globe Kure, was completed and began operations in 2015 as a place to express
and communicate nature restoration technologies. We recreated the waterside environment that was going to be lost with theconstruction of the treatment plant and created a biotope inhabited by diverse flora and fauna, including rare species.

● Consideration of Biodiversity for Proposal (risk assesment)

During civil engineering construction, there are many chances to face the natural environment. Therefore, we propose measures to protect endangered animals and plants andavoid having an influence on them considering biodiversity. As for construction, ourbiodiversity evaluation tools such as “Ikimono Concierge®” , “Mori Concierge®” and“Mizube Concierge®” are effectively used for greening plans at construction sites or for
redevelopment projects.
*Ikimono Concierge®:
Our unique tool for predicting and identifying animals that can be attracted by a planning site
*Mori Concierge®:
Our unique tool enabling the selection of plants that can adapt to the environment of a planning site
*Mizube Concierge®:
Our tool for developing a unique plan to conserve and compensate waterside rare flora and fauna whose
ecosystems may be affected by construction

14 The Taisei Group Environmental Report 2021

Mizube Concierge

● Implementation of Activities to Contribute to Environment and Society in Cooperation

with Various Stakeholders
Our approach to enhancing biodiversity is guided by Environmental Policy and Declaration of Taisei Corporation on Biodiversity
Preservation, and demonstrated as a company-wide activity to reduce environmental impact under our unique biodiversity
conservation guidelines, etc. Not limited to biodiversity consideration in the business, our efforts include offering volunteer opportunities for the Group employees and their families to make nest boxes for dormice as part of natural environmental education
through forest conservation activity, and to participate in Tokyo Greenship Action*1 for more than ten years*1 Tokyo Greenship Action Participated in the “Tokyo Greenship Action,” a nature conservation program hosted by Tokyo Metropolitan Government.

● The Taisei Group Environmental Volunteers

1) Making dormouse nest boxes
Since 2004, Taisei Corporation has participated in the Animal Pathway(bridges for tree-dwelling rodents) Research Society, and has supported
ecosystem conservation activities for tree-dwelling rodents, such as the
dormouse, through development and facilities for animal pathways andmonitoring. As part of these activities, our group employees and their families participate every year in volunteer activities to construct dormouse nest
boxes. In our activities held, we donated these boxes to the Dormouse
Museum of KEEP, Inc.
We have conducted this environmental volunteering activity every year,with participants working to build a total of 2,945 dormouse nest boxes,
thus far.

Dormouse nest boxes made involunteer activities

2,9452) TAISEI 1 Ton CLUB
Since 2010, we have conducted this environmental contribution activity atotal of 9 times, under the theme of “simultaneously achieving carbon offsets
at the Company and in the homes of employees.”
In 2012 and 2015, we supported the Kamaishi Forest Owner’s Association, which manages the mountain forests of Unosumai District. On May 9,2017, a large-scale wild fire occurred in the District due to a suspicious fire,
resulting in the burning of 413 hectares as well as heavy damage. Accordingly, we continued our support through fundraising to donate the cost ofplanting saplings for the reforestation of Kamaishi Forest. We were also
involved in the construction of Kamaishi Unosumai Memorial Stadium, wheretrees that had been felled by the fire in Unosumai District were used to makewooden seats, public toilets, benches and louvers sunshades.

Employees participating in the“TAISEI 1 ton CLUB”

1,381

Status of saplings for
donation for planting

15 The Taisei Group Environmental Report 2021

For Realization of a Safety Secured Society▍Policy and Management
The Taisei Group has stipulated “Communication with local communities” in the Action Guidelines for Taisei Personnel and theTaisei Group as a Whole, and clearly stated that it endeavors, in executing its duties, to prevent the generation of environmental
effects such as noise, vibration, and odor, and to protect the living environment of local residents and neighboring areas.
Taisei Corporation has committed to “aim to provide value with zero environmental risk” in order “to realize a society where
safety is ensured” as one of the 2050 Targets in its 2050 Environmental Targets, TAISEI Green Target 2050.
To achieve this target, we will work to continue having “zero environmental accidents by properly managing construction
byproducts and complying with environmental laws and regulations” by 2030. To achieve these medium- to long-term targets,
Taisei Corporation has set specific, quantitative annual targets and KPIs, and is making efforts while checking their progress. In
addition, we are making efforts to reduce the impact of construction work on the environment, and aiming to continue having
zero environmental
accidents while setting the management of toxic substances and polluted water (prevention of water pollution caused byconstruction wastewater, etc.) as a management priority.
Risks and Opportunities
Environment pollution caused by construction has a significant impact on the surroundings and society. Compliance with environmental laws
and regulations is always one of the most important environmental issues. We keep contributing to the reduction of socio-environmental risks
during construction by promoting the proper management of construction waste, the development and application of new technologies tocomply with the regulations for soil pollution and the promotion of methods that reduce the burden on the surrounding environment.

▍Promotion Framework■ EMSʼs Organizational (EMS)

Taisei Corporation operates an Environmental Management System (EMS) based on ISO14001 on a company-wide basis. We
have established an Environmental Committee, chaired by the President, which deliberates and decides on environmental policy
and environmental targets that are important for environmental management, in addition to medium- and long-term targets andenvironment-related initiatives that lead to external evaluations.
● Risk Measures at Worksites

With a “worksite environment patrol,” the Environment Division of
the Head Office and branches conduct an internal audit to checkthe observance of the environment law and regulations atworksites. As for the findings, we establish corrective andpreventative measures for continuous improvement.
At a worksite, based on the Environment Management manual,
we provide environmental education to our employees and specialized contractors. By sharing the cases that could result in anenvironmental accident, issuing notifications of the proper management of toxic substances such as asbestos and PCB, andreinforcing adequate control and treatment of polluted soil, we
have been raising awareness of the importance of environment
management and the prevention of environmental accidents.
Regarding the management of water resources, Taisei Corporation
is working to “prevent water pollution caused by constructionwastewater and the like” as a management priority. In fiscal 2020,
there were no violations of environmental laws and regulations
caused by construction wastewater.

Risk Measures at Worksites
Type

Measure (Example)

Dust

In response to a complaint about the dust generated
by construction, we implemented measures such as
water sprinkling and installing sheets.

Noise

In response to a complaint about the noise generated at thenighttime concrete-related work, we made early notification to
the neighborhood.

Vibration

In response to a complaint about the vibration caused byheavy machinery work in the factory, we changed ourschedule to carry out word on factory holidays.

Water
pollution

In response to fuel leaks from a crane barge, we usedabsorption mats for recovery and took recurrence prevention
measures.

16 The Taisei Group Environmental Report 2021

● Complaint to Worksites and Handling Thereof

We take proper measures regarding environment-related
complaints addressed to a workplace, make a record andreport using a communication sheet based on the EMS procedure and share the information horizontally among concerned
departments or within the entire Company as required.
In addition, we are properly handling comments given by
citizen groups.

Percentage by complaint item
Others 11%
Traffic obstruction 9%
Water pollutione 2%
Vibrations 17%

Percentage ofcomplaint
items

Noise 31%

Dust 30%● Developing new technologies to realize a society that ensures safety

1) Use of Life Cycle Analysis (LCA)
Life cycle analysis (LCA) of structures aims to assess the overall environmental impact of buildings from their construction throughto their use and eventual demolition. In the construction sector, the Architectural Institute of Japan has released guidelines forbuilding LCA, and Taisei Corporation also makes use of this tool. Taisei Corporation proposes the optimal buildings and equipmentby predicting the necessary costs and environmental load of the structures that it builds throughout their long life cycle, from theplanning and design phase that considers the entire building life cycle, to the construction phase that includes new construction,
refurbishment, and demolition, and the operations phase after the work is completed and delivered to the customer.

2) Established a water treatment process using the degrading bacterium.
1,4-dioxane is a chemical substance that is commonly used as a solvent in the chemical industry, but it is now subject to waterpollution regulations. However, since this substance does not decompose easily, the environmental burden and cost required for
its handling pose major issues. We searched for 1,4-dioxane-degrading bacterium from various environments, and found a newbacterium to degrade 1,4-dioxane effectively. We have established a water treatment process using the degrading bacterium, andcompleted verification using polluted groundwater and factory wastewater.

3) Developed a Cutting-Edge Method of Demolishing Skyscrapers Known as“Tecolep-Light system”
We successfully developed “Tecolep-Light system,” a cutting-edge method of demolishing skyscrapers. The Tecolep system is anenvironmentally-conscious method of demolishing skyscrapers by repeatedly jacking down from the upper level, while minimizing
dust, noise, and other particles, etc. which may negatively affect the surrounding environment.
Unitized lightweight roof structures can reduce the time to create a closed space, allowing demolition work to be completed ina shorter period of time.

17 The Taisei Group Environmental Report 2021

Material Flow and Third-Party Assurance

1
1

3

7

2 0 GTL

11

Gasoline
Heavy oil

Others 18

1560

Offices
35

Kerosene
Fossil fuel(103kL)

Electricity(106kWh)

Factories

Construction sites(sites)DieselAggregates
387

Main construction
materials(103t)■Taisei Corporation■7 Main Group Companies

Water(103m3)
Taisei Corporation
1,412

Ready mixed concrete
3,855

1

11

7 Main Group Companies
109

Steel
Cement 534
172

108

(Non-consolidated)(Consumption)

I N PU T
Civil Engineering

Building
Construction

Offices

OUT PUT(Quantity discharged)

10
70

7

Offices

17

19

206

3
142

Scope37 Main Group Companies
76

7 Main Group Companies
416

Factories
57

Scope2CO2(103t-CO2)25

CO2 by Scope(103t-CO2)

Construction sites(sites)80● CO2 Emissions of the Taisei Group● Construction Waste Amount of the Taisei Group

Units:103t-CO2■Taisei Corporation
216

Units:103t

グループ全体Whole Group
318
340■7 Main Group
Companies
102

TAISEI ROTEC CORPORATION
95

Taisei Corporation
6,625

Taisei Corporation
1,787

Scope1■Taisei Corporation■7 Main Group Companies

Water(103m3)

Construction waste(103t)■Taisei Corporation
1,787

Other 5Main Group
Companies
3

TAISEI U-LEC CO., LTD.
4

Whole Group
2,203■7 Main Group
Companies
416

TAISEI ROTEC CORPORATION
349

18 The Taisei Group Environmental Report 2021

Other 5Main Group
Companies
19

TAISEI U-LEC CO., LTD.
49

Taisei Corporation Material Flow
Third-party assured values are indicated with the

INPUT

mark

Units

FY 2016

FY 2017

FY 2019

FY 2010

FY 2020

109MJ

3.67

3.90

4.14

4.39

3.60

Construction Site (building)

109MJ

1.61

1.72

1.61

1.99

1.04

Construction Site (civil engineering)

109MJ

1.81

1.95

2.31

2.18

2.35

Offices

109MJ

0.24

0.23

0.22

0.22

0.22

3

10 kL

61.9

68.9

79.0

76.7

61.4

Diesel

103kL

60.0

66.3

77.8

75.2

60.0

Kerosene

103kL

1.4

2.0

0.5

0.6

0.9

Heavy oil

103kL

0.5

0.6

0.8

1.0

0.5

106kWh

129

125

111

145

122

Total energy use

Total fossil fuel use

Total electricity use
Construction Site (building)106kWh

35

49

43

57

21

Construction Site (civil engineering)

106kWh

76

60

52

73

87

Offices106kWh

18

16

15

15

15

City gas (offices)

103m3

94

227

140

213

259

Total quantity of the main construction materials

103t

7,738

6,811

6,540

7,369

4,966

Ready mixed concrete

3

10 t

4,833

4,375

3,375

4,066

3,855

Aggregates (gravel, crushed stone, etc.)

103t

1,979

1,679

2,038

2,514

387

Cement

103t

262

283

695

263

172

Steel

103t

638

446

414

506

534

Timber

103t

15

24

16

16

17

Asphalt

103t

11

4

2

3

1

10 t

681

995

1,253

2,106

1,941

Total concrete formwork use

103m2

3,042

4,082

3,464

2,931

3,039

Tropical plywood formwork

103m2

1,801

2,850

1,883

1,920

1,990

Alternative formwork

103m2

1,241

1,233

1,581

1,011

1,049

%

40.8

30.2

45.6

34.5

34.5

10 m

2,338

1,691

1,436

1,414

1,412

(of which the green procurement quantity)*

1

3

Alternative formwork percentage

3

Water (consumption)

OUTPUT

3

Units

FY 2016

FY 2017

FY 2018

FY 2019

FY 2020103t-CO2

231

245

261

267

216

Construction Site (building)103t-CO2

106

110

102

124

66

Construction Site (civil engineering)

10 t-CO2

113

124

148

133

140

Offices

103t-CO2

12

11

11

10

10

103t-CO2

231

245

261

267

216

Scope1103t-CO2

138

151

179

172

142

Scope2103t-CO2

71

67

57

69

57

Scope310 t-CO2

22

27

25

26

17

t

1,040

1,151

1,345

1,302

1,039

SOX

t

158

175

205

200

158

Quantity of Chlorofluorocarbon and halon recovered*2

t

18

12

15

21

—

Construction waste

103t

2415

2,644

2,020

2,411

1,787

Quantity recycled

103t

2,320

2,528

1,924

2,283

1,715

Quantity of direct final disposal

10 t

95

116

96

128

71

103m3

8,172

4,701

4,483

4,288

6,625

Total CO2 emissions

Total CO2 emissions

NOX

Water (discharged)

3

3

3

*1 The quantity used as green procurement products out of the main construction materials*2 Up to FY2019, the quantities of fluorocarbons and halons emitted by Taisei that have been recovered have been tabulated and disclosed (halon recovery quantities since FY2018), in accordance with the Fluorocarbon Recovery and Destruction Act. In FY2020, leak quantities were tabulated in accordance with the Act for Rationalized Use andProper Management of Fluorocarbons. Leak quantities were minute and were therefore not disclosed.

19 The Taisei Group Environmental Report 2021

Material Flow for Group Companies
Third-party assured values are indicated with the

INPUT

mark

Units

FY 2016

FY 2017

FY 2018

FY 2019

FY 2020

109MJ

1.61

1.53

1.62

1.68

1.70

Sites (construction sites)

9

10 MJ

0.37

0.29

0.39

0.32

0.37

Factories

109MJ

1.10

1.12

1.10

1.23

1.20

Offices

109MJ

0.14

0.13

0.12

0.12

0.13

3

10 kL

27

25

26

26

27

Diesel

103kL

11

9

12

10

11

Total energy use

Total fossil fuel use

Kerosene

3

10 kL

2

2

2

3

3

Heavy oil

103kL

12

12

11

11

11

Gasoline

103kL

2

2

2

2

2

GTL

3

10 kL

—

—

—

—

0

106kWh

42

41

40

43

43

Total electricity use
Sites (construction sites)

106kWh

1

1

1

1

1

Factories

106kWh

34

33

33

35

35

Offices106kWh

7

7

7

7

7

3,622

3,794

4,628

5,692

5,056

92

63

378

485

575

10 m

132

153

115

138

109

Units

FY 2016

FY 2017

FY 2018

FY 2019

FY 2020103t-CO2

101

95

100

101

102

City gas

10 m

LPG

t

3

3

Water (consumption)

OUTPUT
Total CO2 emissions3

3

Sites (construction sites)

10 t-CO2

26

19

27

22

25

Factories

103t-CO2

67

68

66

72

70

Offices

103t-CO2

8

7

7

7

7

103t-CO2

101

95

100

101

102

3

Total CO2 emissions
Scope1103t-CO2

77

73

79

79

80

Scope2103t-CO2

23

21

20

20

19

Scope3103t-CO2

2

1

1

2

3

NOX

t

249

211

257

227

224

SOX

t

109

106

107

103

105

t

2

2

3

2

2

103t

352

259

266

485

416

Quantity recycled

103t

333

248

256

475

406

Quantity of Chlorofluorocarbon and halon recovered
Total industrial waste generated

Final disposal quantity

3

10 t

19

11

10

10

10

Water (quantity discharged)

103m3

121

143

109

74

76

Third-party Assurance of Environmental Data within the Taisei GroupOver the past five years, we have standardized and manualized the method of collecting and aggregating environmental data suchas the quantity of energy consumed, the quantity of CO2 emissions and the volume of industrial waste for the 7 main group companies participating in the Taisei Group Environmental Promotion Conference. In FY2020, continuing from the previous year, the 7 maingroup companies received third-party assurance for their actual performance data.
Among the group companies, TAISEI ROTEC CORPORATION, Taisei-Yuraku Real Estate Co., Ltd., and TAISEI HOUSINGCORPORATION,. were inspected by auditors visiting their head offices, major offices and factories.
Third-party assurance not only guarantees the data reliability but also leads to a review and improvement of the management
structure and initiatives of each group company.
● The calculated total values may not be consistent with the total values due to data rounding.
● Third-party assured values are indicated with themark.

20 The Taisei Group Environmental Report 2021

Calculation of Environmental index and Dataobjective

Items

Caluculation Method & Standard

Classification by business typeClassification into civil engineering and building construction (sites), officies (excluding development projects
and others), and factories

CO2 emissions Scope classification Scope1:CO2 emissions associated with the combustion of fossil fuels
Scope2: Indirect CO2 emissions associated with the use of electricity, steam, and chilled and hot water
Scope3: CO2 emissions associated with the transport of soil from construction (generated from off-site)
CO2 emissions

Calculation standard
Calculated based on in-house standards and the Taisei Group’s environmental data calculation manual for the
management of environmental information, complying with the Act on the Rational Use of Energy, the Act on
Promotion of Global Warming Measures, the Waste Disposal and Public Cleansing Act, and the GHG Protocol,
etc.
In calculation of CO2 emissions, Taisei Corporation uses the value of the fuel consumption of the Japan
Construction Mechanization Association, from which the fat content is excluded.

NOx and SOx emissions

Calculation of NOx and SOx emissions originating from diesel, heavy oil, and kerosene. Calculated using theemission coefficient of the Architectural Institute of Japan’s “Guide to Building LCA — Evaluation Tool for
Measures against Global Warming, Resource Consumption, and Waste - Revised Version.”[Offices and Factories] Energyrelated and water consumption

Calculation standard
Calculated based on in-house standards and the Taisei Group’s environmental data calculation manual for the
management of environmental information, complying with the Act on the Rational Use of Energy, the Act on
Promotion of Global Warming Measures, and the GHG Protocol, etc.
— Energy-related and water consumption— Offices and factories: The annual quantities purchased and used are calculated in monthly units.
* Energy-related: Fossil fuels (heavy oil, diesel, gasoline, kerosene, GTL), electrical power, city gas, and LPG
consumption and their energy-equivalent values.

[Civil Engineering and Building
Construction (sites)]
Energy-related and water
consumption

Calculation standard
Calculated based on in-house standards and the Taisei Group’s environmental data calculation manual for the
management of environmental information, complying with the Act on the Rational Use of Energy, the Act on
Promotion of Global Warming Measures, and the GHG Protocol, etc.
— Energy-related and water consumption— Civil Engineering and Building Construction (sites): Consumption in a two-month period in FY2020 issampled at 173 construction sites to calculate the consumption per unit of construction turnover (basic unit).
Annual consumption is calculated by multiplying this basic unit by the construction turnover for the year. For civilengineering, this calculation is performed for each construction type.

Material
flow-related* Energy-related: Fossil fuels (heavy oil, diesel, gasoline, kerosene), electrical power, city gas, and LPG
consumption and their energy-equivalent values.
[Civil Engineering and Building
Construction (sites)]
Calculation of the main
construction materials (concrete
formworks and alternative
formworks) purchased— Amount of the main construction materials used: The quantities of the main construction materials directly
through individual construction of Taisei Corporation and joint venture construction for which Taisei
Corporation is the representative.

[Civil Engineering, Building
Construciton (sites), andFactories]
Caluculation of construction andindustrial waste generated

Construction by-products (waste and valuable resources) generated at the sites of individual construction
projects, joint venture construction for which Taisei Group is the representative, and factories owned by
Taisei Group.

Estimated CO2 emissions andPrevention of CO2 reduction rate in the operation
globalstage Calculated value based on
warming
the FY1990 standard
Emissions per unit floor area

Resource
recycling

Calculated using the “Energy Efficiency Plan” for each of 65 projects, each with a total floor area of 300 m2 or
more and with a total area of about 1,300,000 m2, of Taisei Corporation building construction projects.
— Energy Efficiency Plan: A plan that summarizes the measures for the efficient use of energy such as building
thermal insulation and air conditioning facilities, which is required to be submitted when designing buildings witha total floor area of 300 m2 or more in accordance with the Act on the Rational Use of Energy.

Results for adoption of green
procurement items

Calculated the quantities based on the design specifications by Eco Sheet CASBEE introduced to buildings
designed by Taisei Corporation

Recycled amount

Total amount of sale of valuable resources, wide-area certification, self-disposal, and intermediate treatment

Final disposal amount

Total amount of direct final disposal and intermediate processing residue

Final disposal rate

(final disposal amount / amount arising) × 100 (excluding construction sludge and amount not attributable to
Taisei Corporation)

・ Organizations covered: the Taisei Group (Taisei Corporation, TAISEI ROTEC CORPORATION, Taisei-Yuraku Real Estate Co., Ltd., TAISEI U-LEC CO., LTD., TAISEI SETSUBI
CO., LTD., TAISEI HOUSING CORPORATION, SEIWA RENEWAL WORKS CO., LTD., and J-FAST Co., Ltd.), which are all within Japan only. Environmental data cover morethan 90% of the sales made by the entire Taisei Group.
・ Calculation standard: Calculated based on in-house standards and the Taisei Group’s environmental data calculation manual for the management of environmental
information, complying with the Act on the Rational Use of Energy, the Act on Promotion of Global Warming Measures, the Waste Disposal and Public Cleansing Act, and the
GHG Protocol, the Guide to Building LCA, etc. In calculation of CO2 emissions, Taisei Corporation uses the value of the fuel consumption of the Japan Construction
Mechanization Association, from which the fat content is excluded. Energy-related: Fossil fuels (heavy oil, diesel, gasoline, kerosene, GTL), electrical power, city gas, and LPG
consumption and their energy-equivalent values.
● Third-party assured values (independent assurance report on p.22) are indicated with themark.

21 The Taisei Group Environmental Report 2021

Independent Assurance Report

22 The Taisei Group Environmental Report 2021