Environmental Impact Reduction
Waste

Waste by Type and Disposal Method <GRI 306-2>

We actively promote recycling of industrial waste and other materials to minimize the environmental impact of our business activities.

	Unit	FY2020	FY2021	FY2022	FY2023
Recycling Rate	%	99.9	99.6	99.9	99.9
Landfill Volume	thousand t	<1	<1	<1	<1

Waste Name	Unit	FY 2020	FY 2021	FY 2022	FY 2023	Main Recycling Use
Waste Concrete Utility Poles	thousand t	80	75	75	72	Roadbed material
Metal Scrap	thousand t	32	27	27	39	Metal materials and recycled wires
PCB-containing Waste	thousand t	26	27	18	21	Insulating oil: Heat recovery after detoxification Transformer body: Washed and reused as steel and copper materials
Glass (Insulator) Waste	thousand t	3	3	3	3	Roadbed material (Reuse)
Plastic Waste	thousand t	2	15	17	19	Plastic recycling and heat recovery
Coal Ash	thousand t	-	-	-	-	Cement raw material and landfill material
Desulfurization Gypsum	thousand t	-	-	-	-	Building materials and cement raw material
Wastewater Treatment Sludge^*2	thousand t	-	-	-	-	Roadbed material and cement raw material
Heavy Oil Ash	thousand t	-	-	-	-	Metal recovery and cement raw material
Shells	thousand t	-	-	-	-	Roadbed material
Other	thousand t	<1	<1	<1	1	-
Total^*3	thousand t	144	148	140	156

*1 Amount generated = Valuable materials + In-house reused materials + Industrial waste. (Radioactive waste is excluded because its handling is regulated under nuclear-related laws.)
*2 Weight after dewatering.
*3 Totals may differ from the sum of individual items due to rounding.

In the event of a significant leakage incident, we respond promptly and appropriately in accordance with relevant laws and regulations.

	FY2020	FY2021	FY2022	FY2023
Number of cases	0	0	0	0

Japan is a signatory to the Stockholm Convention and the Minamata Convention on Mercury. In compliance with these agreements and related laws, we manage PCB and mercury-contaminated substances appropriately. We also monitor asbestos usage and manage it in accordance with applicable regulations.
PCB and asbestos are transported for treatment.

	Unit	FY2020	FY2021	FY2022	FY2023
Insulating Oil Contaminated with Trace PCB	ML	4	4	4	6
PCB-Contaminated Non-Transformer Equipment	10,000 units	7	5	3	3