Environmental Management Data

Energy consumption and CO2 emissions

Despite implementing energy-saving welding machines, LED lighting, and green power at our headquarters, the total energy consumption for FY2023 increased by approximately 6.4% compared to the previous year. This increase is attributed to the longer test run times of environmentally friendly engines compared to conventional engines (heavy oil-only engines), even though the production of marine diesel engines decreased from the previous year. Consequently, CO2 emissions also increased by approximately 9.2% compared to the previous year.

*1 TJ: Tera Joule (=1012J)
*2 CO2 emissions were calculated by following the Guidelines for Calculating Corporate Greenhouse Gases Emissions issued by the Ministry of the Environment. CO2 emissions from electric power were calculated by using the adjusted CO2 emission coefficient for designated electric enterprises that was also published by the Ministry of the Environment.
*3 Emissions from each business site related to the machinery business of the Company and major domestic group companies. Scope1: Direct emissions from combustion of fuel, etc. Scope2: Indirect emissions from use of electricity, etc.

Third-party certification for GHG emissions

As a step towards creating the materiality issues set by our group, we have started calculating our Scope 3 emissions from the actual results of FY 2023. To ensure the accuracy of these efforts, we have been certificated from SGS Japan Inc. as external third-party organizations for our GHG emissions for the 2023 fiscal year.

CO2 emissions of our company (standalone) for FY2023

Definitions of Scope 1, 2, and 3
Scope 1: Direct GHG emissions from fuel consumption in the production process.
Scope 2: Indirect GHG emissions from the consumption of electricity and other energy sources in the production process.
Scope 3: GHG emissions from the supply chain.

For details on the scope of statement, please refer to the SGS verification opinion statement.

SGS verification opinion statement

Water consumption

The graph shows our consumption of service water over the last five years. We use clean water (pure water) and industrial water (recycled water). We worked to conserve water throughout fiscal 2023 and, as a result, our total consumption of clean water and industrial water dropped nearly 5% YOY.

Amount of waste generated and waste recycling rate

The illegal dumping of industrial waste has become a major social issue and we do everything to fulfill our responsibility as a waste generator. We rigorously control manifests and visit waste disposers regularly to conduct on-site inspections. More importantly, we are thoroughly committed to the segregated collection and recycling of waste to reduce the amount of waste. The graph to the below shows the amounts of waste we generated and our waste recycling rates over the last five years and a breakdown of waste in fiscal 2023. By changing our business structure, we worked to compress our production system and reduce our generation of waste. As a result, we reduced waste generation by nearly 1% YOY.On the other hand, due to the progress in recycling metal scraps, wood scraps, and slag, the recycling rate increased by approximately 0.4%, reaching 81.8%. We will continue to strive to reduce waste generation and improve the recycling rate. Furthermore, we will continue to ensure proper waste management through strict controls.

Total waste amount and recycle rate

Breakdown of waste

Environmental management data (FY2023)

Investments and costs related to its environmental preservation efforts that MITSUI E&S spent was 1,260.2 million yen in total. The environmental preservation cost categories are based on the Environmental Conservation Cost Categories in the Environmental Accounting Guidelines 2005.

Environmental preservation cost

Environmental preservation cost (=sum of investment and cost: 1,260.2 million yen)