Sustainability Data

Sustainability data on the ID&E Group.

INDEX

Environment
Society
Governance

Environment

Data items		FY2023/06	FY2024/06	FY2025/06		Remarks
Data items		Five Main Group Companies	Five Main Group Companies	Five Main Group Companies	Group companies	Remarks
Total Energy Consumption	Total（GJ）	53,960	53,115	48,415	94,785	The group companies include, in addition to the five main group companies listed in the breakdown energy source below.
Energy Source Breakdown	Kerosene（L）	8,344	12,975	11,402	11,402	For both the main companies and the group companies, calculations are performed only for sites of Nippon Koei and Nippon Koei Energy Solutions where is available.
	Liquefied Petroleum Gas (LPG, m³)	3,485	3,649	3,590	3,590	For both the main companies and the group companies, calculations are performed only for sites of Nippon Koei and Nippon Koei Energy Solutions where is available.
	City Gas (m³)	21,332	20,872	25,892	33,260	For the five main group companies, calculations are performed only for sites of Nippon Koei, Nippon Koei Urban Space, and Nippon Koei Business Partners where usage data is available.For the group companies, calculations are performed only for sites of Tamano Ecost, Nikki Corporation, and Aichi Tamano Information Systems where usage data is available, in addition to the five major companies.
	Electricity (kWh)	10,672,420	10,698,166	9,760,424	19,117,925	The group companies include, in addition to the five major companies, 21 group companies as listed in the “Methods and Scope for Calculating Main Sustainability Data.”
	Renewable Energy/ Certified Electricity (kWh)	57,707	6,807,051	5,791,948	5,791,948	For the five main group companies, calculations are performed only for sites of Nippon Koei, BDP, Nippon Koei Energy Solutions, and Nippon Koei Business Partners where usage data is available.
	Renewable Energy Rate (%)	1	64	59	30
Water Consumption from All Sources	Total（㎥）	17,183	56,461	52,745		FY 2023 figures represent combined consumption of BDP facilities, Nippon Koei Building and Kojimachi Mid-Square Building. FY 2024 figures represent total consumption for Main Group Company facilities where consumption data was available (total amount increased due to expansion of calculation scope compared to FY 2025) FY 2025 figures represent the total consumption of major group companies and the subsidiaries under their umbrella, based on the sites where usage data could be obtained.
	Potable Water Consumption (m³)	7,600	56,907	50,975		The total volume of potable water consumption at sites of Nippon Koei, Nippon Koei Energy Solutions, and Nippon Koei Business Partners where water usage is measurable.
	Other（㎥）	9,583	2,554	1,770		The total volume of non-potable water consumption at sites of Nippon Koei and PHILKOEI INTERNATIONAL, INC. where water usage is measurable.
Total CO₂	t-CO₂ (Market-based)	5,382.12	3,230.81	3,163.86	6,030.40	Scope1+Scope2 emissions include not only the major group companies, but also an additional 21 group companies as listed in the *Calculation methods for Scope 1, 2, and 3 and breakdown of each category can be found in the “Methods and Scope for Calculating Main Sustainability Data.”
Greenhouse Gases (GHG)	Scope1（t-CO₂e）	1,025.12	☑994.97	☑913.35	1,804.16	Calculation methods for Scope 1, 2, and 3 and breakdown of each category can be found in “Methods and Scope for Calculating Main Sustainability Data.” The Group’s toral estimated emissions, calculated based on the emissions of five main companies, amount to 119,534.32 t-CO₂.
	Scope2 Market-based (t-CO₂)	4,357.00	☑2,235.83	☑2,250.51	4,226.25
	Scope2 Location-based (t-CO₂)	4,685.00	☑4,610.91	☑4,186.25	6,183.26
	Scope3（t-CO₂e）	68,249.04	☑102,813.13	☑101,616.58	-
Waste Discharge	Total（t）	697	937	965		FY 2023/06 figures represent combined figures for Nihon Koei Building and BDP facilities. FY 2024/06 figures represent Main Group Company facilities where discharge data was available (total amount increased due to expansion of calculation scope compared to FY 2023/06) FY 2025 figures represent the total consumption of major group companies and the subsidiaries under their umbrella, based on the sites where usage data could be obtained.

*1Five main Group Company: Nippon Koei, Nippon Koei Urban Space, BDP, Nippon Koei Energy Solutions, Nippon Koei Business Partners
*2Group companies (partial scope) : details can be found in "Calculation Methods and Scope for Key Sustainability Data."
NoteThe GHG emissions figures above are aggregated based on the calculation methods and boundaries defined by the ID&E Group, and may not necessarily align with those previously used by the Tokio Marine Group.

The greenhouse gas emissions of the five major group companies for the fiscal years ending June 2024 and June 2025 have received third-party assurance from ASUENE Inc. The assured items are indicated with a check mark ☑.

The third-party assurance report is available　here.

Social

ID&E, Nippon Koei, Nippon Koei Urban Space, Nippon Koei Energy Solutions, Nippon Koei Business Partners (total employees as of the end of June 2025:3,899)
Data items	As of End of June 2024			As of End of June 2025			Data items
Data items	Men	Women	Total	Men	Women	Total	Data items
Number of Management Personnel (People)	660	38	698	669	44	713	*1
New Graduates in Japan (People)	120	70	190	125	70	195	*1
Mid-career Hiers in Japan (People)	72	31	103	52	40	92	*1
Average Years of Continuous Employment (Regular Employees) (Year)	-	-	12.2	-	-	12.3	*1
Number of Regular Employees Resignations(People) (Ratio)	-	-	102(3.2%)	-	-	119(3.6%)	*1
Annual Total Working Hours per Person (Average)	-	-	1947.2			2190.3	*2
Annual Overtime Hours per Person (Average)	-	-	139.7			375.3	*2
Annual Paid Leave Days Taken (Days) (Ratio)	-	-	11.7(66.4%)			11.9(66.8%)	*3
Employment Rate of Persons with Disabilities (%)	-	-	2.42			2.52	*3
Gender Pay Gap (%)	-	-	74.2			70.9	*3
Maternity and Childcare Leave Uptake (People) (Ratio)	46(61.3%)	14(82.3%)	-	55(64.7%)	30(120.0%)	-	*3
Return-to-Work Rate After Maternity and Childcare Leave (%)	-	-	100	-	-	100	*3
Average Days of Male Parental Leave (Days)	73.3	-	-	84.5	-	-	*3
Number of Professional Engineers (People)	-	-	1,786	-	-	1,806	Total number of people
Work-related Accidents(During work)	9	0	9	9	1	10
work-related Accidents (Commuting)	4	1	5	6	1	7
Work-related Fatalities	0	0	0	0	0	0

*1Aggregation scope : Regular employees only. Does not include directors, contract employees, advisors, part-time employees, or non-regular staff.
*2Aggregation scope : Regular employees, contract employees, and part-time employees. Does not include directors, advisors or non-regular staff.
※3Aggregation scope : Regular employees, contract employees, advisors, and part-time employees. Does not include directors.

Other Group Companies
Data items	As of End of June 2024			As of End of June 2025			Scope	Remarks
Data items	Men	Women	Total	Men	Women	Total	Scope	Remarks
Number of Managers Personnel（people）	41	18		36	17	53	*4	*1
New Graduates in Japan (people)	5	7	12	6	2	8	*4	*1
Mid-career Hiers in Japan	6	6	12	9	10	19	*4	*1
Average Years of Continuous Employment (Regular employees)	13.7	9.8	12.6	13.5	9.6	12.3	*4	*1
Number of Regular Employee Resignations (Ratio)	-	-	15(5.2%)	-	-	12(4.1%)	*4	*1
Work-related Accidents (During work)	0	0	0	0	0	0	*5	*1
Work-related Accidents (Commuting)	0	0	0	1	0	1	*5	*1
Work-related Fatalities	0	0	0	0	0	0	*5	*1

*4Nippon Civic Consulting Engineers, Koei Research & Consulting, Koei System, El Koei (Reference: Total employees as of the end of June 2025: 585)
*5Koei Research & Consulting, Kisho Kurokawa Architect & Associates, Nikki Corporation (Reference: Total employees as of the end of June 2025: 136)

Kubota Found Scholarship Recipients
FY 2023/06	FY 2024/06	FY 2025/06
12 recipients / 11 countries	12 recipients / 9 countries	12 recipients / 9 countries

Governance

Internal Reporting Cases(Target: Main Group Companies)
FY 2022/06	FY 2023/06	FY 2024/06	FY 2025/06
7	12	22	22

Response to the Compliance Awareness Survey (Target: Group Companies based in Japan and Overseas Countries)
FY 2022/06	FY 2023/06	FY 2024/06	FY 2025/06
4,857	5,234	5,253	5,260

Patent Holdings (Target: Registered Patents in Japan by Main Group Companies (Nippon Koei, Nippon Koei Urban Space, and Nippon Koei Energy Solutions))
FY 2022/06	FY 2023/06	FY 2024/06	FY 2025/06
55	50	49	48

Sustainability

ID&E Group's Sustainability

Environment

Social

Governance