Responses to climate change

Up to the present, Murata has established its own standards for capital investment related to energy conservation, and we have responded to the issue of climate change by actively conducting capital investment to allow us to save energy.

We obtain third-party certification of our greenhouse gas (GHG*1) emissions and proactively disclose information, by which we receive high evaluations from outside the company, such as in the CDP*2 climate change survey.

However, in addition to increased production as a result of the recent expansion of our business, plural M&As and the development of new businesses have caused a rapid increase in our emissions of greenhouse gases. In order to both halt this increase and reduce our emissions, we are continually carrying out energy-saving initiatives, centered on a Committee on Global Warming Prevention that is chaired by one of our Directors, to achieve our greenhouse gas reduction goals based on the SBT*3 concept.

In addition, we are supplementing our existing capital investment-based approach to energy conservation by beginning to optimize our use of energy during production through the creation of new energy management systems that incorporate Murata sensing and IoT technologies.

We also participate in the Japan Climate Leaders Partnership, an organization that is ambitiously addressing the issue of climate change in Japan. In addition to making use of knowledge from outside the company to assist us in speeding up our own initiatives, we are also examining the possibility of cooperating with other participating companies to launch projects that will contribute to climate change initiatives globally.

∗1 GHG: Greenhouse gas. Gases that contribute to the greenhouse effect
∗2 CDP: Carbon Disclosure Project. An international non-governmental organization (NGO) that surveys and evaluates the environmental initiatives of entities such as companies and cities, and publishes the results.
∗3 SBT: Science-based targets. Quantitatively-derived scientific targets established in relation to long-term scenarios for the reduction of greenhouse gases.

Murata’s total greenhouse gas emissions


In fiscal 2018, energy conservation and streamlining efforts enabled us to reduce our CO2 emissions by approximately 40,000 t-CO2

At the same time, factors including the incorporation of new worksites as a result of M&As in fiscal 2017 saw us generating total greenhouse gas emissions* of approximately 1.63 million t-CO2 in fiscal 2018, a result that exceeded our target figure of 1.4 million t-CO2 by 2021 based on SBTs.

Taking these results into consideration, we will examine a variety of measures in addition to energy conservation to enable us to achieve our SBT-based targets across the entire company, including new business sites acquired through M&As. These measures will include the introduction of renewable energy and carbon pricing, and we will accelerate our implementation of such measures.

Trend of total GHG emissions

Murata is a member of the Japan Electronics and Information Technology Association (JEITA). The four electrical equipment and electronics associations, including JEITA, participate in KEIDANREN’s Commitment to a Low Carbon Society with an eye to 2020, and aim to improve the energy efficiency of production processes by 1% per annum. In order to achieve this target, Murata is also working to improve energy efficiency through energy-efficiency measures at factories and offices, etc.

Rate of improvement in quantitative basic units at domestic factories

Percentage of GHG emissions by region
Breakdown of SCOPE1 and SCOPE2 Emissions in FY2018 (CO2 equivalent)
Type of greenhouse gas
 Emissions  [ton-CO2e]
Scope1  CO2
 Scope2  CO2 (Due to power)
Emissions coefficients were calculated using the IPCC 4th Assessment Report (AR4) 100-year time horizon

Third-party verification of greenhouse gas emissions

As initiatives to tackle climate change have become essential for companies, Murata manages its greenhouse gas emissions based on reliable data that has been certified by a third party. Murata believes that disclosure of highly reliable data is a first step and receives third-party certification of greenhouse gas emissions each year. Furthermore, Murata is actively working toward the introduction of solar power generation, and hence, it also receives certification of the amount of solar power generated.

Third-party assurance statement

Initiatives of the Committee on Global Warming Prevention

The Special Committee on Global Warming Prevention is positioned as a subordinate body to the CSR Management Committee which is chaired by the Representative Director and made up of company Directors. The Special Committee is made up of representatives of production plants, Business Departments, Development Departments, and Headquarters staff, and works to conserve energy and prevent global warming via a company-wide system.

Concrete initiatives being advanced by the Special Committee include the horizontal rollout of energy conservation measures across the entire company, the introduction of heat pumps to production facilities, and the improvement of productivity at our manufacturing sites.

In addition, since fiscal 2017 we have been revising our criteria for investment decisions in relation to energy conservation, and working to enhance our energy conservation initiatives.

Togi Solar Park at Hakui Murata Manufacturing Co., Ltd.
Togi Solar Park at Hakui Murata Manufacturing Co., Ltd

Introduction of renewable energy

Murata is working to increase the volume of renewable energy consumed for business activities. As a global company, we have actively promoted the introduction of solar power generation both in Japan and in other countries such as China. In fiscal 2018, we generated a total of 23 million kWh of electricity from renewable energy sources such as photovoltaic power generation facilities, which contributed approximately 15,500 t-CO2 to our greenhouse gas reduction efforts. We will continue to consider introducing renewable forms of energy in Japan and other countries with the goal of contributing to environmental load reduction. We are also promoting the launch of businesses that use battery storage systems in order to contribute to increased use of renewable energy throughout society, and not just at Murata.

Development of energy-saving electronic component manufacturing equipment 

At Murata, we are developing electronic component manufacturing equipment that has a high rate of energy efficiency. Our indicator for the energy savings realized by this manufacturing equipment is energy consumption per unit of production (per unit of net production). We are developing the new equipment with the goal of a 25% or higher reduction in energy consumption against benchmark machinery (conventional manufacturing equipment).

We have also been proceeding with energy-saving improvements to the existing manufacturing equipment in operation at our plants. In fiscal 2018, we focused on a horizontal rollout of approximately 70 energy-saving measures for manufacturing equipment that we have formulated to date.

We have made improvements, focusing on measures with a large greenhouse gas reduction effect. Our main energy-saving initiatives included: 1) updating to high efficiency equipment, including refrigeration equipment; 2) effective use of exhaust heat from exhaust-gas treatment equipment (RTO); 3) reducing electricity use when equipment is standing by; and 4) reducing air-conditioning power by optimizing the pressurization of cleanrooms.

In addition, every year we conduct energy-saving training workshops for production equipment design engineers in their second year of employment, providing them with know-how in relation to the design of production equipment in order to realize energy savings.

In fiscal 2019, Murata will continue to develop energy-saving manufacturing equipment and, as a new initiative, will build an energy measurement system combining sensors and wireless systems developed in-house in an effort to save energy and increase productivity.
Energy Conservation Performance of Developed Equipment Energy conservation performance of developed equipment

∗ Method of calculating total greenhouse gas emissions

Following the GHG Protocol, a global calculation standard, we calculate total emissions within the three scopes defined below:

Scope 1: Direct emissions of greenhouse gases generated by emission sources either owned or managed by the business

Scope 2 *4: Indirect emissions of greenhouse gases accompanying the use of electricity, steam, and heat

Scope 3 *5: Indirect emissions other than those covered by Scope 2 (business trips by employees, transportation and delivery of products, etc.)

∗4 Following the issuance of new guidance in fiscal 2015, calculations are conducted using the CO2 conversion factor for each country derived using the location method
∗5 Emissions results for Scope 3 are published by the CDP

Contributing to the prevention of global warming through energy-saving activities that put our organizational capabilities to work

Murata is working actively on the visualization of energy in its business, using in-house technology, and is establishing a system that will allow us to plan and effectively implement energy-saving measures. Specifically, we are moving ahead with the introduction of an energy management system that enables energy usage to be analyzed both at plants and the head office. The system uses wireless sensors developed by Murata to gather such data as temperature and humidity in a plant and the current value of various pieces of equipment and sharing them online. This system has won a Good Design Award and a Chairman Prize of ECCJ in the Energy Conservation Grand Prize for excellent energy conservation equipment in fiscal 2017. Thus far, Komoro Murata Manufacturing has used this energy management system to optimize its air-conditioning and reduce standby power of equipment through energy visualization, achieving a 2.2% reduction in greenhouse gas emissions for the plant overall as a result. Murata will continue making efforts to introduce advanced energy-saving measures such as the energy management system throughout the Group, which has operating bases around the world.

Reducing PFCs

PFCs are chemical substances that contribute to global warming, and are a target for reduction under the Kyoto Protocol. Murata is a member of the Japan Electronics and Information Technology Industries Association (JEITA), and we stand behind the organization’s voluntary action plan. Murata itself has set a fiscal 2020 target of achieving a 65% reduction in liquid PFCs against fiscal 2002 in terms of COequivalent, and has worked to realize this goal. From 2015, we have been successively introducing PFC regeneration and recovery equipment to worksites that use large amounts of liquid PFCs, and in fiscal 2018 we realized our target, achieving a reduction of 74% against fiscal 2002.

Changes in volume of liquid PFC use and rate of reduction (Domestic)