Basic Concept

Addressing climate change (decarbonization and carbon neutrality) is a pressing issue that must be addressed globally. Among the many sectors, we believe the construction industry has a particularly important role to play. This is because it uses materials such as cement and steel, which generate significant greenhouse gas emissions during their manufacture; because the operation of construction machinery during the construction phase consumes large amounts of fuel; and because the long service life of buildings has a major impact on greenhouse gas emissions during their operational phase.

In FY2021, we set greenhouse gas reduction targets (Well-below 2℃ targets) for Scope 1・2 and Scope 3 emissions reductions aiming for 2030. From FY2022, we established a dedicated department for planning and managing our carbon neutrality initiatives to further promote decarbonization. Subsequently, in March 2023, we set a target to achieve net-zero Scope 1 and 2 emissions by 2050. In order to achieve our net-zero target, we have been actively working to reduce Scope 1 and 2 emissions in accordance with the transition plan set forth in our previous medium-term management plan to realize our Long-term Vision 〈TOA2030〉.

In March 2026, as part of the Medium-term Management Plan 2026-2028 to realize our Long-term Vision〈TOA2035〉, within a revised time frame, while maintaining the ideals originally outlined in Long-term Vision〈TOA2030〉: “Building a prosperous society and connecting people with the world for a better future”, we revised our 2030 reduction targets for Scope 1 and 2 emissions to align with the 1.5℃ target (limiting global temperature rise to 1.5℃ above pre-industrial levels)*, and set a goal of achieving net-zero emissions across the value chain, including Scope 3, by 2050. In line with this, we have revised our roadmap for achieving carbon neutrality and reviewed our transition plan based on our achievements and our future business goals.

Towards achieving these goals, we are advancing efforts to reduce greenhouse gas emissions in cooperation with various members of our value chain.

In addition, the contents of the roadmap and transition plan are reviewed annually.

* Our 2030 reduction targets for Scope 1 and 2 are currently in the process to update as the Science Based Targets.

The TOA CORPORATION Group's Carbon Neutral Roadmap

In our Group’s carbon neutral roadmap, we divide the targets into Scope 1・2 and Scope 3, and indicate the reduction targets and key initiatives.

Regarding Scope 1 and 2, the 2030 target aiming for a 44% reduction by FY2030 (compared to FY2020) is aligned with the 1.5℃ target and considered our past reduction achievements. Moreover, we aim to achieve net-zero emissions through our long-term target for 2050.

In the marine civil engineering work that our company specializes in, construction is often carried out using work vessels. These work vessels are equipped with larger machinery and equipment (power engines) than those used in land-based construction. Furthermore, since the machineries primarily run on diesel oil and heavy fuel oil, they emit a large amount of CO₂. Based on our track record of domestic construction projects, emissions from marine civil engineering works account for approximately two-thirds of the total. Therefore, while working on decarbonization of on-site operations through energy-saving construction work and productivity improvements, efforts to reduce CO₂ emissions from work vessels are extremely important. As one of the measures to achieve this, we will focus on utilizing low-carbon fuels, particularly biofuels, to meet our 2030 targets. Furthermore, in the long term, we will continue our efforts to introduce next-generation energy sources such as hydrogen, as well as negative emission technologies such as blue and green carbon generation.

On the other hand, for Scope 3, the 2030 target is set as a WB 2℃ target, aiming for a 25% reduction by FY2030 (compared to FY2020), and the long-term target for 2050 is to achieve net zero emissions.

Since Scope 3 emissions of our group are largely comprised of emissions during the manufacturing of construction materials and during the use of buildings, we are promoting the use of low-carbon materials, the development and utilization of low-carbon concrete, and the ZEB/ZEH.

By strategically addressing these issues, we will contribute to the realization of a decarbonized society, while mitigating negative financial impacts and striving to maximize business opportunities.

Carbon Neutral Road Map

The TOA CORPORATION Group's Climate Transition Plan

In the climate transition plan, the action plan for our Group’s transition to 2050 net-zero society is represented for Scope 1 and 2.

To achieve our 2030 targets, while pursuing our targets of net-zero by 2050, we are promoting energy-saving construction and productivity improvements, the use of alternative fuels (low-carbon fuels) and next-generation energy sources, and the use of carbon offsets. Our group is considering specific action plans based on our past reduction achievements and the anticipated increase in CO₂ emissions due to future business growth. Regarding the use of biofuels, we are advancing discussions that include the production and supply of biofuels, as the current supply system to ships, including work vessels, is not sufficient.

In this way, our group is examining and working on action plans to realize this climate transition plan while aligning it with our business strategy.

Transition Plan

Disclosure of Climate Change-Related Information in Line with the TCFD Recommendations

TOA CORPORATION Group expressed its support for the final recommendations of the Task Force on Climate-related Financial Disclosures (TCFD) in December 2021.^*1
TCFD is an international initiative established in 2015 by the G20 Financial Stability Board (FSB) to improve the disclosure of information on the financial impact of climate-related risks and opportunities. We disclose climate-related information in accordance with these TCFD recommendations.

*1 The TCFD was dissolved in October 2023. From 2024, IFRS (International Financial Reporting Standards) takes over the monitoring the progress of companies’ climate-related disclosures. We will continue to disclose information in accordance with the TCFD and IFRS S2 (climate-related disclosures).

Core Elements of Recommended Climate-Related Disclosure

Governance	The organization’s governance around climate-related risks and opportunities
Risk management	The processes used by the organization to identify, assess, and manage climate-related risks
Strategy	The actual and potential impacts of climate-related risks and opportunities on the organization’s businesses, strategy, and financial planning
Metrics and targets	The metrics and targets used to assess and manage relevant climate-related risks and opportunities

Governance

The ESG Committee has been established to promote company-wide ESG activities of the TOA CORPORATION Group. The committee is chaired by the President and consists of two Vice President, six General Managers, a Director who is a full-time Audit Committee member, and an Outside Director who is an Audit Committee member.

The ESG Committee meets twice a year to formulate basic policies and specific action plans concerning ESG activities, including responses to climate change, review the results of activities, and discuss measures. The results of the committee's deliberations are reported to the Board of Directors, and important decisions are communicated to business divisions (including branches) and group companies to establish a group-wide governance system. In the future, We aim to share ESG related policies and the plans with our partner companies.

Corporate Governance Organization Structure

Risk management

TOA CORPORATION Group has established a three-tier risk management framework, as illustrated in the Risk Management System chart, encompassing measures to address climate change.

At the first line, the relevant departments at head office and branch offices, along with group companies, formulate countermeasures for the risk items under their responsibility at the start of each period based on the annually reviewed risk inventory, thereby executing risk management. At the second line, the Risk Management Subcommittee, which comprehensively monitors group-wide risks, reports to the ESG Committee and proposes improvement measures based on the Group's risk response status and external environmental information. It also supports the first line's risk management activities. The ESG Committee deliberates on the Group's risk management policies and framework. It also reviews the risk inventory, issues countermeasure directives, and reports the situation to the Board of Directors. Furthermore, at the third line, the Internal Audit Office operates independently from the first and second lines. It collaborates to ensure appropriate risk management is carried out and reports the status of these efforts to the Board of Directors.

In classifying climate-related risks and opportunities, we organize the anticipated events and impacts for each, evaluating them based on ‘frequency of occurrence’ and ‘impact of occurrence’. We also consider preventive countermeasures for each risk and opportunity item.

Risk management system chart

Strategy

Based on the TCFD recommendations, we conducted scenario analyses to identify and evaluate risks and opportunities in our group and to understand the impact of climate-related issues on our business, taking all perspectives into account: short term (3 years), medium term (10 years), and long term (30 years). Furthermore, we evaluated the impact level in three stages (large, medium, and small) based on the frequency of occurrence and duration of impact and presented the high and medium impact levels in the table below (Major Business Risks and Opportunities).

In conducting the scenario analysis, the following representative scenarios are adopted.

Temperature rise scenario	Adopted scenario
1.5℃	IEA NZE2050 Among the scenarios developed by the International Energy Agency (IEA), we used the "NZE2050" scenario. This is a scenario in which net zero emissions will be achieved by 2050 to limit the temperature increase at the end of this century to less than 1.5°C compared to pre-industrial period. The results of this analysis also include a review of the analysis of the Sustainable Development Scenarios "SDS" developed by the IEA.
4℃	IPCC SSP5-8.5 We used the "SSP5-8.5" scenario, developed by the Intergovernmental Panel on Climate Change (IPCC), in which the temperature-rise at the end of this century will exceed 4°C compared with the pre-industrial period.

Climate-related Risks, Opportunities and Countermeasures (Results of Scenario Analysis)

(Risks and opportunities assessed as having a ‘high’ or ‘medium’ impact in either the 1.5°C or 4°C scenario are listed.)

Based on these results, we are strategically addressing the following issues as specific responses and are maximizing business opportunities while limiting negative financial impact.

• Reducing CO₂ emissions at the construction stage (energy-saving construction, productivity improvement, introduction of low-carbon construction equipment and fuels, procurement of electricity from renewable energy sources, R&D on low-carbon concrete, and R&D on CO₂ capture and utilization technologies, etc.)
• Promoting ZEB/ZEH in buildings (registration as a ZEB Planner/ZEB Leading Owner)
• Participating in Initiatives in offshore wind power generation projects (shipbuilding of self-elevating platform, and R&D for construction of floating type facilities)
• Conducting R&D of technologies that contribute to disaster prevention/mitigation and renewal of infrastructure
• Conducting R&D of technologies for the creation of blue carbon

Financial Impact Assessment for 2030

We believe that climate change will have a significant financial impact on our business environment in 2030 under the 1.5°C scenario and have therefore conducted a financial impact assessment under this condition.

Financial impact assessment results (2030, 1.5°C scenario)

Under the 1.5°C scenario, the costs associated with introduction of carbon tax and responding to increase in the temperatures would be extremely high. However, implementing measures such as emission reduction based on transition plans and countermeasures for heatstroke would significantly reduce the risks. Additionally, by actively expanding opportunities in response to increased demand for ZEB/ZEH buildings and disaster prevention measures in port and coastal areas, profits increased compared to FY2020.

As a result, it was confirmed that by consistently implementing countermeasures to address risks and opportunities, a certain level of resilience to climate change will be achieved by 2030.^*2

Going forward, we will also actively conduct future projections under the 4°C scenario.

*2 Uncertainty in future forecasts in financial impact assessments
Based on the TCFD recommendations, we conducted qualitative and quantitative analyses of financial impact assessments. These impact assessments are forecasts of the highly uncertain future, and we plan to review them as necessary in the event of changes in internal figures or parameters.

Main parameters used in scenario analysis

Carbon price (yen/t-CO2)	IEA Net Zero by 2050 A Roadmap for the Global Energy Sector
Estimated average unit price for labor	Unit price for labor in public works designed in 2024
Number of days with temperatures above 30°C	Global Warming Prediction Information, Volume 8, 3.9 (Japan Meteorological Agency)
Cost increase rate of ZEB buildings compared to general buildings	ZEB Design Guidelines (Sustainable open Innovation Initiative)
Elevation height of revetment facilities to cope with sea level rise	Policy for Implementing Climate Change Adaptation Measures in Ports and Harbors, 14 March 2024 (Ports and Harbors Bureau, Ministry of Land, Infrastructure, Transport)

Metrics and Targets

We have established key performance indicators (KPIs) for ESG-related initiatives and monitor their status. As one of KPIs, we have set the total greenhouse gas emissions (Scope 1+2 and Scope 3) as metrics, and established its reduction target based on SBT, in consideration of the impact of future climate-related risks and opportunities. These had certified as WB2°C target by the SBT initiative in September 2022. In addition, for Scope 1+2, Net Zero target by FY2050 was set in March 2023. Subsequently, in March 2026, we revised our Scope 1 and 2 emissions reduction targets for FY2030 to align with the 1.5°C target, and set a goal of achieving net-zero emissions across the entire value chain, including Scope 3, by FY2050. We manage the total greenhouse gas emissions as a direct parameter affected by climate-related risks and opportunities and promote specific reduction measures.

Total emissions Scope1 + 2	More than 44% cut in FY2030 (Compared to FY2020) *3 Net Zero by FY2050
Total emissions Scope3	More than 25% cut in FY2030 (Compared to FY2020)*3 Net Zero by FY2050

*3 Our 2030 reduction targets are currently in the process to update as the Science Based Targets.

Materiality and KPI

Results of Greenhouse Gas (GHG) Emissions

GHG Emissions of the TOA CORPORATION Group (by Scope)

Total GHG emissions of the TOA CORPORATION Group (by Scope) are shown below.

Scope3 Emissions by Category (t-CO₂)

As for actual GHG emissions in FY2024, for Scope 1+2, energy conservation activities, introduction of load control systems (introduced on some of our work vessels), use of electric and hybrid heavy equipment (introduced mainly in construction equipment for land-based work), fuel efficiency improvement (use of alternative fuel to diesel oil and combustion-enhancing additives), and introduction of renewable energy were carried out, and these measures resulted in a 28.4% reduction compared to the base year (FY2020) emissions, significantly exceeding the target of a 10% reduction.

Scope 3, although we promoted environmentally conscious designs such as ZEB (Zero Energy Building) for buildings, the significant increase in construction materials due to a substantial increase in business volume had a major impact, resulting in an 18.2% increase from the base year (FY2020) emissions (the target was 10% reduction from the base year). Going forward, we will further engage and collaborate with our supply chain, focusing even more on initiatives such as ZEB for buildings and the introduction of low-carbon materials.

CO₂Emissions from Domestic Construction Works

CO₂ emissions from our domestic construction works are calculated based on sampling surveys, and CO₂ emission intensity (per 100 million yen of construction sales) and total CO₂ emissions are shown in the figures below. This total amount of CO₂ emissions is equivalent to Scope 1+2 for domestic construction works.

In FY2024, both civil engineering and building construction work experienced a significant increase in construction volume compared to the base year (FY2020). However, emissions intensity for both civil engineering and building construction work decreased significantly, resulting in a decrease in total emissions. Overall, the total emissions from domestic construction projects in FY2024 decreased by 42.5% compared to FY2020. This result has also contributed to the reduction of Scope 1+2 emissions (achievement of targets) for our group.

Energy Consumption

As input resources corresponding to the above GHG emissions, the total energy consumption of our group is shown below.

Energy Consumption (MWh)

Third-party assurance

The above greenhouse gas emissions and energy consumption have been given assurance by an independent third-party.

Independent Third-Party Assurance (PDF)

Climate Change Related Initiatives

Through supporting various climate change-related initiatives below, the TOA CORPORATION Group will promote ESG management from a more global perspective and create social value that is unique to TOA.

CDP

Science Based Targets initiative (SBTi)

Task Force on Climate-related Financial Disclosures (TCFD)

Japan Climate Initiative (JCI)