We report efforts and achievements for the environmental load in FY 2019 indicated in the page of "Environmental Aspect in Corporate Activities."
The following report covers TAIYO YUDEN CO., LTD.: six sites, and its domestic and overseas consolidated subsidiaries.

Compliance, Monitoring

We report the result of compliance and monitoring at each site in FY 2019.

Data by Site

GHG, Energy

There are three categories for greenhouse gases (GHG) emitted during the course of business activities: Direct emissions from use of energy (SCOPE 1), Indirect emissions from energy use (SCOPE 2) and Indirect emissions other than from energy use (SCOPE 3). GHG emissions cannot be easily measured, so we concentrate on energy use and reducing energy consumption.

Results of Efforts to Reduce Greenhouse Gases and Energy Consumption

In FY2019, the amount of GHG emitted by the entire group decreased by 8,000 t-CO2e compared to FY2018. Specifically, the sites in Japan maintained their emissions at 188,000 t-CO2e, while overseas sites decreased theirs to 298,000 t-CO2e from 306,000 t-CO2e in FY2018 (see G1).
The amount of energy used by the entire group increased by 4,000 kL compared to FY2018. Specifically, sites in Japan increased their usage to 102,000 kL from 95,000 kL in FY2018, while overseas sites decreased theirs to 128,000 kL from 131,000 kL in FY2018 (see G2).
Energy usage is broken down into 91% for SCOPE 2 and 9% for SCOPE 1 (see G3).
Improvement in energy intensity, which we aim to achieve in the medium term environmental target, was 20.8% on average for FY2016–FY2019 (see G4).
We will continue to review production processes with a focus on core products to further improve the production efficiency and lower energy usage.

  • Note: Changes in the conversion factor have a major impact on GHG calculations, so the medium environmental targets were set according to energy consumption (crude oil equivalent), a factor that has measure able results.
  • Note: GHG emissions are calculated using GHG Protocol factors (electricity by country).
  • Note: GHG emissions in Japan have been corrected after reviewing the electricity-CO2 conversion factor.

G1: GHG Emissions
(calculated from total energy consumption)

G2: Energy Consumption
(crude oil equivalent)

G3: Breakdown of Energy Consumption
(crude oil equivalent)

G4: Average Energy Consumption Per Unit
(results compared to target)

Efforts on Indirect Emissions Other than from Energy Use (SCOPE 3)

In recent years, there has been an increasing demand from our stakeholders to disclose information on SCOPE3 emissions, in addition to information on SCOPE1 and SCOPE2 emissions. In order to respond to such a demand, we are striving to keep track of our SCOPE3 emissions.
We have ascertained that our greenhouse gas emissions from purchased goods/services were 311,000 t-CO2e (group), 7,614 t-CO2e (domestic sites) from commuting, 462 t-CO2e from business trips (domestic sites), 6,343 t-CO2e from disposal and processing of waste (domestic sites) and 38,868 t-CO2e from transporting products (group).

Waste, Water

We strive to reduce environmental effect on biodiversity while coexisting with nature, and we use the 3Rs (reduce, reuse, recycle) to reduce waste and make effective use of water resources.

Results of Reducing Waste

The amount of waste generated in FY2019 by the entire group increased to 24,000 tons from 23,300 tons in FY2018. This increase was caused by an increase in production volume and other factors (see G1).
The waste (including valuables) mainly consists of waste plastic, sludge, and waste oil (see G2).
The final amount of waste disposed of inside Japan decreased to 0 tons from 3 tons in FY2018. The waste recycling rate, which we aim to improve in the medium term, was 100% (see G3).
The total amount of waste disposed of outside Japan increased to 2,000 tons from 1,800 tons in FY2018 (see G4).
Improvement in waste generation per unit of production, which we aim to achieve as a medium-term environmental goal, was 9.4% on average for FY2016-FY2019 (see G5). The final amount of waste disposed of per unit of production was improved by 35.6% on average for FY2016–FY2019 (see G6).
We will continue working to reduce waste volumes, boost in-house recycling rates, and recycle waste into resources at our overseas sites.

G1: Amount of Waste Generation

G2: Breakdown of Waste

Definition of waste: general waste, industrial waste, and items having resale value.

G3: Domestic Final Disposal Volumes and Recycling Rates

G4: Overseas Final Disposal Volumes and Recycling Rates

G5: Average Waste Generation Per Unit
(results compared to target)

G6: Average Final Disposal Volume Per Unit
(results compared to target)

Resource Recycling Efforts

99.9% of the waste generated in the course of our business activities is recycled and reused as resources in society. However, we are also promoting efforts to reuse waste for the business activities of the Taiyo Yuden Group.
For solvent A, which is the most frequently used solvent in our business activities, 14% of the amount used is recycled waste solvent.
In addition, for reels that are used for packaging electronic parts, strict quality checks are performed and 12% of all the reels are recycled reels.

Results of Water Resource Efforts

The water usage of the entire group decreased from 4,422,000 m3 in FY2018 to 4,249,000 m3 in FY2019. Specifically, the sites in Japan increased their usage to 1,710,000 m3 from 1,709,000 m3 in FY2018, while the sites outside Japan decreased to 2,539,000 m3 from 2,713,000 m3 in FY2018 (see G7).
Improvement in water usage per unit of production, which we aim to achieve in the medium-term environmental target, was 23.3% on average for FY2016–FY2019 (see G8).
The amount of recycled water was 597,000 m3.

G7: Water Use

G8: Average Water Use Per Unit
(results compared to target)

Environmental action case

Reducing Greenhouse Gas Emissions

Improved vacuum pump operation efficiency [TAIYO YUDEN (GUANGDONG)]

We run various infrastructure facilities to maintain the operation of production facilities and working environments and are making various efforts to increase their operation efficiency, as their energy consumption is particularly high.
In TAIYO YUDEN (GUANGDONG), power consumption was reduced by updating the water-cooled vacuum pumps to air-cooled vacuum pumps and introducing inverters to control the pumps to operate only on an as-needed basis.
In addition, we succeeded in eliminating water usage for the cooling tower of the watercooled vacuum pumps to cool down heated pumps, as it is not necessary for air-cooled vacuum pumps.
As a result of these improvements, GHG emissions of 185 t-CO2e per year and water usage of 1,300 t per year were reduced.
Air-cooled vacuum pump

Reduced energy consumption of tanks by suppressing heat radiation

The tanks for temporarily storing plating liquid used during production processes are made of metal, which causes energy loss due to heat radiation.
We have implemented a countermeasure by measuring the surface temperatures of the tanks using thermography to identify tanks with high temperatures and covering them with insulation. This countermeasure suppressed excess heat radiation from the tank surfaces, resulting in the reduction of energy loss.
The amount of GHG emissions reduced as a result was 4t-CO2e per year.
Measurement of tank surface temperature

Response to Climate Change

We are promoting the use of renewable energies as a response to climate change. Currently, solar panels are installed in four sites to generate power. In FY2019, Scope 2 GHG emission was reduced by 452 t-CO2e per year by generating 910 MWh.

Hongo Photovoltaic Power Plant
TAIYO YUDEN Mobile Technology

Reducing Water Use

Water conservation by recycling wastewater [TAIYO YUDEN (PHILIPPINES)]

Water usage was reduced by recycling water discharged from the intermediate processes of the water treatment facilities in the cooling tower for air conditioning.
The amount of water reduced was 23,000 t per year.
Piping for sending recycled water to the cooling tower

Biodiversity action case

Mangrove Tree Planting [ TAIYO YUDEN (PHILIPPINES) ]

In FY2008, TAIYO YUDEN (PHILIPPINES) began planting mangrove seedlings on Olango Island, near Mactan Island where the company is located. Mangrove trees are planted.

Volunteering for Forest Maintenance [ TAIYO YUDEN ]

Since FY2007, TAIYO YUDEN has participated in a forest maintenance project run by Gunma Prefecture, involving corporate volunteer work. Every year, volunteers from TAIYO YUDEN have helped to maintain the "Taiyo no Mori" forest, joining with prefectural government employees to trim underbrush and thin trees.

Extermination of alien species (red swamp crawfish) [ NIIGATA TAIYO YUDEN ]

The crayfish is included in the list of designated Invasive Alien Species because they have disruptive effects on Japan's indigenous species including aquatic organisms and plants.
NIIGATA TAIYO YUDEN leads a biodiversity conservation activity every year in which employees and their family members exterminate crayfish. They also exterminate alien plants such as daisy fleabanes.