The Rengo Group is working to mitigate climate change by aiming for net zero greenhouse gas emissions across the entire value chain. At the same time, we are focusing on adaptation to business risks brought about by climate change, promoting sustainable and stable business operations.
Reduction of Greenhouse Gas Emissions
- Fuel Conversion and Expansion of Non-fossil Energy Introduction
- Improvement of Energy Efficiency
- Calculation of Carbon Footprint (CFP)
- Reduction of CO2 Emissions in Transportation
Reduction of Greenhouse Gas Emissions
Rengo regards climate change as an urgent issue that must be addressed globally. We are working to reduce greenhouse gas emissions through measures such as fuel conversion and expansion of the introduction of non-fossil energy.
Greenhouse gas emissions (Scope1+2)*
- (Note) Scope:Rengo on a non-consolidated basis and domestic consolidated subsidiaries as of March 31, 2025 (excluding non-manufacturing sites such as offices and warehouses)
- * Adjusted greenhouse gas emissions based on the Act on Promotion of Global Warming Countermeasures
Breakdown of greenhouse gas emissions
- (Note) Scope:Rengo on a non-consolidated basis and consolidated subsidiaries in Japan
Fuel Conversion and Expansion of Non-fossil Energy Introduction
Rengo is converting fuels used at its plants from coal and heavy oil to city gas and liquefied natural gas (LNG), which emit fewer greenhouse gases, while also promoting the introduction of non-fossil energy sources derived from biomass and waste.
Going forward, we plan to completely eliminate the use of coal at domestic Group sites by FY3/2028 and further expand the use of LNG and biomass.
In addition, we are introducing solar power generation equipment, taking into consideration the characteristics of each region and plant.
Total energy input and energy ratios in manufacturing sites by type
- (Note) Scope:Rengo on a non-consolidated basis and consolidated subsidiaries in Japan
Amount of electricity generated from solar power generation equipment
- (Note) Scope:Rengo on a non-consolidated basis and consolidated subsidiaries in Japan
Improvement of Energy Efficiency
The Rengo Group utilizes a diverse range of energy sources, including fossil fuels, waste-derived energy, and renewable energy. To reduce greenhouse gas emissions, we are continuously working to enhance the efficient use of energy at our manufacturing sites.
Calculation of Carbon Footprint (CFP)
Rengo has established a system for calculating CO2 emissions from raw material procurement to delivery for each of the Group's products —including corrugated packaging, paperboard (including containerboard), folding cartons, cellophane, plastic film products and flexible packaging, and nonwovens—and is working to reduce the CFP of each product. In addition to calculating emissions for individual products, we also visualize the total CO2 emissions of all products delivered by Rengo. Through this, we support our customers' CO2 reduction efforts by providing products with lower emissions.
Reduction of CO2 Emissions in Transportation
Strengthening the Logistics System
We are improving logistics efficiency by consolidating and optimizing dispersed warehouses, while strengthening our logistics system. At Rengo Logistics Co., Ltd. Yashio Logistics Center, Rengo Yashio Second Logistics Center, and Yodogawa Logistics Center, we have introduced warehouse management systems (WMS), truck guidance systems, and RFID. Furthermore, at the Yodogawa Logistics Center, we have introduced unmanned clamp forklifts to promote the automation of warehouse operations such as storage and picking.
Modal Shift
To address the shortage of truck drivers and reduce environmental impact, Rengo is promoting a modal shift from land transportation to marine transportation.
So far, we have shifted to marine transportation for multi-pack products (such as six-pack beer packaging) between Tokyo and Kyushu, and for corrugated containerboard between Osaka and Kyushu/Okinawa.
In addition, for the transportation of corrugated containerboard between Tokyo and Aomori, we have introduced trailer transport using RoRo ships*, reducing CO2 emissions on this route by approximately 60 percent per trip.
*Cargo ships onto which trucks or trailers loaded with cargo can drive directly for transportation.
Product Transport Routes
Adaptation to Climate Change Risks
Monitoring for Flood Risk
Since FY3/2022, Rengo has been continuously assessing water risks ―such as water supply conditions at production sites and flood frequency― in order to better understand these risks and establish appropriate countermeasures.
For all manufacturing sites of the Rengo Group, we use the WRI "Aqueduct"* watershed-based water risk assessment tool to identify local water issues in the regions where each site is located.
*Aqueduct: A tool developed by the World Resources Institute (WRI) for assessing water-related risks.
Evaluation Results by WRI Aqueduct
| Water stress level | Number of manufacturing sites | Water withdrawal volume | ||
|---|---|---|---|---|
| Number of sites | Percentage (%) | (1,000 m3) | Percentage (%) | |
| Low | 73 | 23.0 | 1,507 | 3.2 |
| Low-Medium | 96 | 30.3 | 13,278 | 28.6 |
| Medium-High | 100 | 31.5 | 31,537 | 68.0 |
| High | 22 | 6.9 | 33 | 0.1 |
| Extremely High | 26 | 8.2 | 53 | 0.1 |
| Total | 317 | 100 | 46,408 | 100 |
- Note:Based on the five-level evaluation of Baseline Water Stress in the Water Risk Atlas, part of WRI's Aqueduct watershed-based water risk assessment tool.
TCFD Disclosure
Rengo discloses information in accordance with the framework of Task Force on Climate-related Financial Disclosures (TCFD).