SASB INDEX

Relevant performance is organized in accordance with the Electric Utilities & Power Generators industry standards set by the US-based Sustainability Accounting Standards Board (SASB).
SASB Standards were created primarily with companies and markets in North America in mind and incorporate some items that do not apply to our business. However, we have attempted to disclose as much information as possible.

FY2025 data

Topic	Accounting metric	Code	Result
Greenhouse gas emissions & energy resource planning^*1	(1) Gross global Scope 1 emissions	IF-EU-110a.1.	43,320,000 t-CO₂
	(2) Percentage of Scope 1 emissions under emissions-limiting regulations		Not applicable
	(3) Percentage of Scope 1 under emissions-reporting regulations		100%
	Greenhouse gas (GHG) emissions associated with power deliveries	IF-EU-110a.2.	43,120,000 t-CO₂
	Discussion of long-term and short-term strategy or plan to manage Scope 1 emissions	IF-EU-110a.3.	Aim for net-zero emissions (carbon neutrality) by 2050. Toward 2030, along with reducing the use of thermal power and pushing forward biomass mixed combustion, we will consider and prepare for mixed combustion of ammonia, upcycling of existing facilities, and CCS in Japan, while steadily pursuing initiatives to reach our CO₂ reduction target.
	Emissions reduction targets		2050 Net-zero emissions 2030 Reduce CO₂ emissions from the J-POWER Group’s domestic power generation business: 46% (22.5 million t-CO₂)^3 The FY2025 target (reduction of 9.2 million t-CO₂^*3 CO₂ emissions from the J-POWER Group’s domestic power generation business) has been achieved.
	Analysis of performance against the above targets		Actual CO₂ emissions for FY2025 were 35.78 million t-CO₂ (a decrease of 12.99 million t-CO₂ compared to FY2013), achieving CO₂ reductions exceeding the interim target. In order to cut CO₂ emissions from the J-POWER Group’s domestic power generation business by 46% (a decrease of 22.5 million t-CO₂) compared to FY2013 by FY2030, we are moving forward with plans to implement the above reductions.
	(1) Number of customers served in markets subject to renewable portfolio standards (RPS)	IF-EU-110a.4.	Not applicable * The RPS law which established RPS regulations in Japan was abolished in 2012 and has shifted to a feed-in tariff system.
	(2) Percentage fulfillment of RPS target by market	IF-EU-110a.4.
Air quality^*2	(1) NOx	IF-EU-120a.1.	16,400 t, 100% * The percentage value indicates emission rate in densely populated areas.
	(2) SOx		6,800 t, 100% * The percentage value indicates emission rate in densely populated areas.
	(3) Particulate matter (PM10)		Not disclosed, as we have not adopted measurement methods recommended by the SASB Standards.
	(4) Lead (Pb)		Not disclosed, as we have not adopted measurement methods recommended by the SASB Standards.
	(5) Mercury (Hg)		Not disclosed, as we have not adopted measurement methods recommended by the SASB Standards.
Water management^*2	(1) Total water withdrawn	IF-EU-140a.1.	55,947,700 thousand m³, [0%] * The percentage value indicates the proportion of areas with high/extremely high water stress.
	(2) Total water consumed		15,300 thousand m³, [43%] * The percentage value indicates the proportion of areas with high/extremely high water stress.
	Number of incidents of non-compliance associated with water quantity and/or quality permits, standards, and regulations	IF-EU-140a.2.	0
	Description of water management risks and discussion of strategies and practices to mitigate those risks	IF-EU-140a.3.	The Company manages the following risks related to the use of water resources, which are essential to its power generation business. In the hydroelectric power generation business, the amount of water withdrawal permitted by law is observed, and the river environment is maintained by discharging water from rivers exceeding certain sizes^*4. In the thermal power generation business, we are working to reduce water withdrawal by recovering and reusing water for power generation. In addition, seawater is used as indirect cooling water for power generation facilities, and we comply with the levels stipulated in environmental conservation agreements, thereby mitigating the impact on aquatic environments. WRI Aqueduct (3.0) is used to locate water risks for the hydroelectric and thermal power plants of consolidated subsidiaries that use large amounts of water resources. As a result, while no power plants operate in places with high water stress in Japan, there are thermal power plants located in regions with high water stress overseas. In such overseas areas, we are striving to reduce water withdrawal/consumption and operational risk by reusing water discharges after treatment and constructing reservoirs by taking each site’s environment into account.
Coal ash management^*2	Amount of coal combustion residuals (CCR) generated and percentage recycled	IF-EU-150a.1.	1,421,000 tons [93.2%]
Coal ash management^*2	Number of CCR impoundments	IF-EU-150a.2.	3
Energy affordability	(1) Retail electric rate for residential customers	IF-EU-240a.1.	Not disclosed for competitive reasons due to deregulation of the electric power industry
	(2) Retail electric rate for commercial customers
	(3) Average retail electric rate for industrial customers
	Typical monthly electric bill for residential customers for (1) 500 kWh of electricity delivered per month	IF-EU-240a.2.
	Typical monthly electric bill for residential customers for (2) 1,000 kWh of electricity delivered per month	IF-EU-240a.2.
	(1) Number of residential customer electric disconnections for non-payment	IF-EU-240a.3.
	(2) Percentage reconnected within 30 days	IF-EU-240a.3.
Workforce health and safety	(1) Total recordable incident rate (statistic count x 200,000/hours worked)	IF-EU-320a.1.	0.54 (Employees: 0.05; Outsourcing & other contractors: 0.70) Note: Calculations are for J-POWER, J-POWER Transmission Network Co., Ltd., five major Group companies^, and partner companies. J-POWER Business Service Corporation, J-POWER HYTEC Co., Ltd., J-POWER Generation Service Co., Ltd., J-POWER Telecommunication Service Co., Ltd., J-POWER Design Co., Ltd.
	(2) Fatality rate (number of cases)		1
	(3) Near miss frequency rate (statistic count x 200,000/hours worked)		Not disclosed, as we have not adopted measurement methods recommended by the SASB Standards.
End-use efficiency & demand	(1) Decoupled percentage	IF-EU-420a.1.	Not applicable * Not applicable as no customers in Japan have adopted the decoupling and LRAM
	(2) Lost revenue adjustment mechanism (LRAM) percentage	IF-EU-420a.1.
	Percentage of electric load (MWh) served by smart grid technology	IF-EU-420a.2.	Not disclosed for competitive reasons due to deregulation of the electric power industry
	Customer electricity savings from efficiency measures, by market	IF-EU-420a.3.	Not applicable
Nuclear safety & emergency management	Total number of nuclear power units	IF-EU-540a.1.	1 (Ohma Nuclear Power Plant) * Ohma Nuclear Power Plant is currently under construction and reviewed by the Nuclear Regulation Authority of its compliance with the New Safety Standards for Nuclear Power Stations. Timing of operational start is unscheduled.
Nuclear safety & emergency management	Description of efforts to manage nuclear safety and emergency preparedness	IF-EU-540a.2.	We are working to improve safety by aptly implementing safety activities based on the quality management system for nuclear safety led by our president, and by steadily undertaking continuous improvement through the Corrective Action Program (CAP). Furthermore, with “safety first” as our organizational culture and with awareness among all of us of the roles and the importance of our work duties, we engage in activities to foster and maintain a culture of nuclear safety by which we continuously improve ourselves.
Grid resiliency	Number of incidents of non-compliance with physical and/or cybersecurity standards or regulations	IF-EU-550a.1.	Not disclosed due to risks associated with disclosure
	(1) System Average Interruption Duration Index (SAIDI)	IF-EU-550a.2.	Not applicable * J-POWER Transmission Network Co., Ltd., a consolidated subsidiary of the Company, owns electric power transmission and transformation facilities and engages in electricity transmission as stipulated in the Electricity Business Act, but does not own distribution facilities and does not engage in the business of supplying electricity to end users. This is currently placed under the roles of individual transmission system operators (TSOs) that engage in grid operations in specific areas.
	(2) System Average Interruption Frequency Index (SAIFI)
	(3) Customer Average Interruption Duration Index (CAIDI)

*1 The figure is calculated for J-POWER and its domestic and overseas consolidated subsidiaries and equity method affiliates (electric power business, overseas business, electric power related business, etc.).
*2 The figure is calculated for J-POWER and its domestic and overseas consolidated subsidiaries (electric power business, overseas business, electric power related business, etc.), without taking into account the ratio of capital contribution.
*3 All of these reductions are compared to FY2013.
*4 The length of the section of the river where water withdrawal for hydroelectric power generation reduces water flow is 10 km or more and the catchment area is 200 km² or more, etc.

Activity Metrics

Business metrics	Result
Number of: (1) residential, (2) commercial, and (3) industrial customers served	Not disclosed for competitive reasons due to deregulation of the electric power industry
Total electricity delivered to: (1) residential, (2) commercial, (3) industrial, (4) all other retail customers, and (5) wholesale customers	Not disclosed for competitive reasons due to deregulation of the electric power industry
Length of transmission and distribution lines	2,410.3 km
Total electricity generated, percentage by major energy source, percentage in regulated markets	(1) 66,712,726 MWh (2) Hydroelectric: 12.5% Thermal: 85.3% Wind: 2.0% Geothermal: 0.1% Solar: 0.1% (3) Not applicable (Marked “Not applicable” as there are no “regulated markets” in Japan)
Total wholesale electricity purchased	Not disclosed for competitive reasons due to deregulation of the electric power industry

* Total electricity generated and percentage by major energy source are based on the results of consolidated subsidiaries in the domestic electric power business.