Climate Change

In order to achieve a decarbonized society, companies have an increasingly important role and responsibility to play. At the same time, the risks to business due to climate change, such as the frequent occurrence of natural disasters, have been increasing year by year.

SII has been striving to reduce greenhouse gas emissions through all of our business activities, including energy-saving activities at our manufacturing sites as well as the products and services our subsidiaries and affiliates provide. While continuing these activities, we will further strengthen our efforts toward decarbonization by introducing renewable energy and other measures.

FY 2020 Overview and Future Initiatives

As a result of the major business restructuring within the Seiko Holdings Group in April 2020, SII’s watch business was transferred to Seiko Watch Corporation, and its R&D and production technology development functions were transferred to Seiko Holdings Corporation. In addition to these factors, SII’s environmental impact, including CO2 emissions, has also decreased significantly due to the influence of the COVID-19 pandemic.

As part of our activities to reduce CO2 emissions, we continued our efforts in efficient operation of facilities and other areas, as well as in switching to LED lighting and upgrading of equipment. In addition, we have introduced renewable energy at our overseas sites.

In the future, we will redefine our medium- and long-term vision and target values, and accelerate our efforts to decarbonize.

CO2 Emissions
CO2 Emissions (Japan Sites): 
28,699 tonsーCO2
13,666 tonsーCO2 decrease, or -32.3% from FY 2019

■CO2 Emissions by Scope

  FY 2016 FY 2017 FY 2018 FY 2019 FY 2020
Scope2 65,855 65,687 38,952 38,781 25,527
Scope1 7,094 6,310 3,585 3,584 3,172
Total 72,949 71,997 42,538 42,365 28,699

*There are some items that do not add up to the total due to fractional processing.

■ In accordance with a review of CO2 emission factors, CO2 emissions prior to FY 2019 have been recalculated.
* For electricity, the "emission factor by electric utility" in the Law Concerning the Promotion of Measures to Cope with Global Warming is used.
* For fuels, the “calorific value by fuel type” and “emission factor for fuel use” in the Law Concerning the Promotion of the Measures to Cope with Global Warming are used.
* For hot and cold water, emission factors provided by suppliers are used.
* From FY 2020, tenants and company vehicles have been added to the scope of the calculation.
* For stores, warehouses, etc., where the amount of electricity used cannot be specified, the amount is estimated from the floor area.


Emissions (Overseas Sites)
CO2 Emissions (Overseas Sites): 
 30,173 tonsーCO2
17,365 tonsーCO2 decrease, or -36.9% from FY 2019
  • Overseas bases
    • SIT: Seiko Instruments (Thailand) Ltd. 
    • DSI: Dalian Seiko Instruments Inc.
    • SITS: Seiko Instruments Technology (Shanghai) Inc.

■CO2 Emissions by Scope

  FY 2016 FY 2017 FY 2018 FY 2019 FY 2020
Scope2 48,732 46,798 48,300 47,334 29,708
Scope1 415 400 427 473 464
Total 49,147 47,198 48,727 47,807 30,173

*There are some items that do not add up to the total due to fractional processing.

■ In accordance with a review of CO2 emission factors, CO2 emissions prior to FY 2019 have been recalculated.
* Electricity is based on IEA Emission Factors 2020.
* For fuels, the “calorific value by fuel type” and “emission factor for fuel use” in the Law Concerning the Promotion of the Measures to Cope with Global Warming are used.
* For stores, warehouses, etc., where the amount of electricity used cannot be specified, the amount is estimated from the floor area.

Introduction of Renewable Energy

At the Navanakorn Factory of Seiko Instruments (Thailand) Ltd. (SIT), solar panels were installed on the factory premises, and the solar power generation system began operating in June 2021. The scale of this system is 0.7 MWp. SIT is the operating company with the largest amount of CO2 emissions in the SII Group. We will continue to systematically introduce solar power generation to reduce CO2 emissions

Solar panels installed on the premises
Solar panels installed on the premises

Participation in the Energy Efficiency Improvement Project

The Gateway factory of SIT participated in the Energy Efficiency Project sponsored by the Department of Alternative Energy Development and Efficiency (the efficiency bureau), Thailand, which asks companies to participate in a survey to determine the energy efficiency standards for factories. The Gateway factory cooperated in field surveys such as the chiller power usage survey and the efficiency bureau presented them with a certificate of appreciation for their participation in the project.