Sustainability Data

Climate Change

GHG Emissions (Scope 1 + 2)


Direct emissions for both Japan and overseas are calculated using emission factors conforming to the Japanese Act on Promotion of Global Warming Countermeasures. This includes non-energy-derived GHG emissions (385 kt-CO2e) that are outside the scope of the law. The amount of GHG emissions from electric power purchased in Japan is calculated according to the market-based method using the emission factors of electric suppliers. For overseas emission factors, we used the latest emission factors for each country as published by the IEA.

In FY2020, we reduced total Group GHG emissions (Scope 1 + 2) to 2,760 kt-CO2e due to factors including a decrease in production vol-umes and initiatives such as energy-saving activities. GHG emissions related transport operations in Japan (Scope 3) came to 25 kt-CO2e. The SMM Group will continue to promote energy-saving activities in FY2021 as well, and anticipates reductions of 16 kt-CO2e for the year.
GHG emissions reduced due to solar power generated at the solar power plant operated by the Group in Kashima, Ibaraki Prefecture came to approximately 1.6 kt-CO2e in FY2020.

Breakdown of GHG Emissions (FY2020)


Group companies in Japan Group companies overseas Total
Scope 1 492 1,385 1,877
Scope 2 881 2 882
Total 1,373 1,387 2,760

Scope 3: See Scope 3 (emissions during domestic transport) in the Output table on p.4

Unit Energy Consumption and CO2 Emissions Index*

(Scope: Smelting & Refining Business in Japan)

Graph:Unit Energy Consumption and CO₂ Emissions Index*(Scope: Smelting & Refining Business in Japan)

Unit energy consumption and CO2 emissions index: The amount of energy consumed and CO2 emitted during the production of 1 ton of product, assuming the FY1990 value to be 1 (including fuels used as reducing agents).

In the Group’s Smelting & Refining Business in Japan, unit energy consumption for FY2020 improved, decreasing by 5 points. This was due to a recovery in FY2020 from the situation in FY2019, when regu-lar maintenance and equipment trouble at the Toyo Smelter & Refin-ery caused a decline in production of electrolytic copper.
SMM is a member of the Japan Mining Industry Association (JMIA), an organization of non-ferrous mining, smelting and refining compa-nies, and we are participating in action by JMIA to implement the Car-bon Neutrality Action Plan (formerly called The Commitment to a Low Carbon Society) being led by the Japan Business Federation (Keidan-ren) within the non-ferrous mining, smelting and refining industry.
We will continue to proactively engage in thorough energy manage-ment, the promotion of energy-saving activities, the introduction of renewable energy, the use of unutilized heat, and other endeavors with the aim of reducing unit energy by an average of at least 1% per year and further lowering CO2 emissions over the medium to long term.