Addressing climate change

Mizuho is moving ahead with efforts to address climate change by periodically assessing the energy consumption of the entire Group, setting GHG emissions reduction targets and devising energy consumption reduction strategies centered on electric power consumption.

GHG Emissions Reduction Initiatives

Regarding our own GHG emissions (Scope 1 and 2), Mizuho has set a target of becoming carbon neutral by FY2030 and pursues various initiatives to achieve this target. In view of addressing legally mandated disclosures, we expanded the scope of measurements in FY2023 to include all domestic and overseas consolidated subsidiaries, and in FY2024 we obtained third-party assurance of our measurements on a consolidated basis. In March 2025, we expanded the scope of our targets to all consolidated subsidiaries.

Target for GHG emissions (Scope 1 and 2)

Target for GHG emissions (Scope 1 and 2) :
Carbon neutral by FY2030* (Carbon neutrality to be maintained thereafter)

Scope 1 and 2 GHG emission results* and progress on reduction initiatives

graph

*Target / scope of data collections: All domestic and overseas consolidated subsidiaries.
**Previous scope: Seven group companies (Mizuho Financial Group, Mizuho Bank, Mizuho Trust & Banking, Mizuho Securities, Mizuho Research & Technologies, Asset Management One, and Mizuho Americas)

ESG Data Book (Reduction of Environmental Impact) (PDF/1,135KB)

Strategy for achieving Scope 1 and 2 targets

Expansion of the scope of carbon neutrality target to the consolidated group (previously limited to seven group companies)
Expansion of the scope of third-party assurance to consolidated companies and globally
Introduction of EVs at sales offices (approximately 100 vehicles across 10 branches).Further rollouts are planned
Development of reduction plans for high-emitting overseas sites
Purchasing high-quality credits with a view towards FY2030 and beyond

Reduce CO₂ emissions by installing and properly utilizing energy-saving equipment

To attain its CO₂ emission volume reduction target, Mizuho will introduce energy–conserving facilities and take thorough measures to appropriately operate and manage those facilities and implement other energy conservation measures while also working to increase its employees' consciousness of environmental issues as a means of promoting CO₂ emission reductions going forward.

In addition, based on the "Mizuho Environmental Standards" instituted with respect to the environmental friendliness of Mizuho Bank branches, Mizuho Bank has adopted solar cell power generation systems and LED lighting fixtures.

Principal Energy Conservation Measures

Facility–Related Measures	Introduction of such energy–conserving equipment as air conditioning equipment, LED lighting fixtures, and motion–sensor switches Introduction of heat–blocking films on windows and heat–blocking curtains Renovation of equipment to introduce such high–efficiency equipment as inverter–controlled cooling units
Operations–Related Measures	Thorough management of air conditioning temperature settings and reduction of number of air conditioning units used Thinning out of lighting fixtures in hallways and elevator lobbies and improved control of those fixtures Restricting the use of a portion of office automation equipment units Thorough measures to ensure computer monitors are turned off when employees are away from their seats Summer closures of training centers, etc., and thorough management of heating/cooling temperature settings at such facilities Proactive promotion of telephone/online conferencing to reduce the number of business trips (MHBK)
Employee Consciousness–Related Measures	Implement "Cool–Biz" and "Warm–Biz" seasonal apparel promotion programs Promote the "visualization" of energy usage/CO₂ emission data for each branch and other facility (MHBK, MHTB, MHRT) Increase employee consciousness of energy conservation/the saving of resources

Promoting the adoption and operation of environment–friendly vehicles

Group companies centered on Mizuho Bank have reevaluated their low–usage–level motor vehicles, completely eliminating the use of marketing–use motorcycles and progressively reducing the number of automobiles while concurrently moving ahead with the introduction of hybrid vehicles and other low–pollution vehicles and shifting to the use of electric bicycles.

Going forward, plans call for moving further ahead with the introduction of electric vehicles, hybrid vehicles, and other low–pollution vehicles, while also encouraging drivers to reduce engine idling time periods, adopt other "eco–driving" techniques, and implement other measures to further reduce CO₂ emission volume.

Initiatives Taken in Response to National and Local Laws, Ordinances, and Requirements

In Japan, the national government has passed the Act on the Rational Use of Energy (Energy Conservation Law), and local environmental ordinances require that business facilities emitting more than a certain level of greenhouse gases submit and disclose plans for fighting global warming. Mizuho is submitting reports for each of its facilities covered by the ordinances and is striving to reduce energy usage and the volume of CO₂ emissions associated with each facility. Specifically, in line with the requirements of the Energy Conservation Law, Mizuho is working to cut back annual energy consumption per unit by 1% or more on average, and is endeavoring to attain the targets set by local governments.

Tokyo Metropolitan Environmental Security Ordinance

Based on "the Tokyo Cap–and–Trade Program" (for large facilities) and "the Tokyo Carbon Reduction Reporting Program" (for small and medium scale facilities) promoted by The Tokyo Metropolitan Government, relevant Mizuho Group companies have formulated policies for responding to global warming (climate change) and have submitted the reports shown below to the Tokyo Metropolitan Government. In addition, facilities subject to "the Tokyo Cap–and–Trade Program" have undergone third–party audits. In addition for properties managed in trust, the Mizuho Group collects information and submits reports to the Tokyo metropolitan government on energy usage and greenhouse gas emissions.

Tokyo Metropolitan Government, "The Tokyo Cap-and-Trade Program"

Required Facilities		Tokyo Carbon Reduction Plan (Japanese Text Only)
MHBK	Administration Center	FY2023 (PDF/497KB)
	Information Center	FY2024 (PDF/344KB)
	Mizuho Marunouchi Tower	FY2024 (PDF/307KB)

Tokyo Metropolitan Government, "The Tokyo Carbon Reduction Reporting Program"

Required Entities	Tokyo Carbon Reduction Report (Japanese Text Only)
MHBK	FY2009 - FY2023 FY2024 -
MHTB	FY2009 - FY2023 FY2024 -
MHRT^*	FY2009 - FY2023

^* Mizuho Information & Research Institute and Mizuho Research Institute merged on April 1, 2021.

Mizuho submits reports on its global warming countermeasure to the government of Minato City, Tokyo, in accordance with the ordinance on the promotion of low-carbon buildings for the protection of the living environment for Minato City residents.

City of Yokohama, Kanagawa Prefecture, "The CO₂ Emission Reduction Program"

Based on the "CO₂ Emissions Reduction Program" specified in the "Ordinance to Preserve the Living Environment", business facilities emitting more than a certain level of greenhouse gases are required to submit and disclose plans for preventing global warming.

Mizuho submitted the CO₂ Emissions Reduction Plan and Report on required facilities in the city of Yokohama as follows:

Required Entity	CO₂ Emissions Reduction Plan (Japanese Text Only)	CO₂ Emissions Reduction Report (Japanese Text Only)
MHBK	FY2022～ 2024(PDF/298KB)	FY2023 (PDF/445KB) FY2022 (PDF/436KB) FY2021 (PDF/496KB) FY2020 (PDF/19,198KB) FY2019 (PDF/18,774KB)