Based on our environmental policy, we are promoting environmental conservation activities in various fields such as order entry / contract, design / development, purchasing, manufacturing, distribution / sales, service, disposal / recycling.

Last updated:Aug 26, 2021

Trends of CO2 emissions

We decreased CO2 emissions by approximately 2.8% in fiscal 2020, which was on par with the levels in fiscal 2015. Specific CO2 emissions per unit of production of lead-acid storage batteries decreased by approximately 0.6% compared to fiscal 2015.

*The above figures are based on a power to CO2 conversion factor of 0.500 (kg-CO2/kWh), to enable comparison between fiscal years.

Improving transport efficiency

We were designated as a specified shipper (30 million ton-km) in accordance with the revised Energy Conservation Act of April 2006 and have continued to work on improving transport efficiency since then. Although we increased CO2 emissions by approximately 3.8% in fiscal 2020, compared to fiscal 2015, specific emissions increased by approximately 6.1% per unit (compared to fiscal 2015). We are nonetheless determined to keep on increasing transport efficiency in the future.

Wastewater

Wastewater levels at all sites were maintained within figures agreed with the relevant local authorities.

Waste

We recycled 97.0% of all waste in fiscal 2020. We are committed to ecycling and will continue to reduce the volume of waste we generate in the future.

Targets and results

In fiscal 2019, we carried out activities based on the following environmental targets.

Emissions and transfers of substances subject to PRTR Act

The following figures were taken in fiscal 2020 in accordance with the PRTR Act (Act on Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion of Improvements to the Management Thereof). We will continue to work on reducing emissions in the future.

Iwaki Plant

Chemical

Total emissions
(kg/year)

Total transferred
Facility (kg/year)

Antimony and compounds

0.0

19

Cadmium

1.7

22,823

Ferric chloride

0.0

0.0

Cobalt and compounds

0.3

195

Lead compounds

3.9

4,729

Nickel

8.0

4,925

Nickel compounds

5.2

9,369

Arsenic and inorganic compounds

0.0

1.9

Imaichi Plant

Chemical

Total emissions
(kg/year)

Total transferred
Facility (kg/year)

Antimony and compounds

1.0

0.0

Ferric chloride

0.0

0.0

Toluene

2,278

0.0

Lead compounds

97.8

308.4

Arsenic and inorganic compounds

0.1

0.0

Methylnaphthalene

7.0

0.0

* Emissions …Substances emitted into the air or public waters
    Transferred …Subcontracted waste treatment