Initiatives to Prevent Global Warming
Expanding the Measurement of Energy Consumption
To reduce its CO2 emissions, Mizuho has gradually expanded the measurement scope and increased the number of measurement items regarding energy consumption.
In fiscal 2009, MHFG, together with its key group companies numbering 12 in all (MHFG and these 12 companies are referred to as the "13 group companies" below.) established systems for measuring total energy consumption at all business facilities in Japan, electricity usage at U.S. business facilities, fuel consumed by employees traveling for business, and gasoline used in vehicles inside and outside of Japan.
In fiscal 2010, the measurement of electricity usage overseas was extended to cover all business facilities.
| Item | FY2008 | FY2009 | FY2010 | |
|---|---|---|---|---|
| Indirect Energy Consumption | Power*2 In Japan (Thousand kilowatt–hour) | 369,135 | 461,883 | 468,727 |
| Power*2 Overseas (Thousand kilowatt–hour) | – | 12,007 | 32,436 | |
| Steam (gigajoule) | 10,989 | 26,162 | 26,546 | |
| Hot Water (gigajoule) | 6,086 | 14,243 | 15,691 | |
| Cold Water (gigajoule) | 41,165 | 90,142 | 97,573 | |
| Direct Energy Consumption | Kerosen (kiloliter) | 227 | 500 | 503 |
| Light Oil (kiloliter) | – | – | 1 | |
| Heavy Oil (kiloliter) | 499 | 343 | 66 | |
| LPG (ton) | – | 11 | 12 | |
| City Gas (thousand cubic meter) | 1,190 | 3,682 | 3,769 | |
| Energy Consumed by Employee Transportation | Gasoline*3 In Japan (kiloliter) | 3,604 | 3,043 | 2,925 |
| Gasoline*3 Overseas (kiloliter) | – | 207 | 221 | |
| By Aireplane*4 (thousand kilo meter) | – | 59,877 | 71,222 | |
| Water Usage*5 | Tap Water (thousand cubic meter) | 586 | 1,539 | 1,517 |
| Sewer Water (thousand cubic meter) | 441 | 1,386 | 1,348 | |
- *1Since fiscal 2009, all items have been measured at domestic business facilities of 13 group companies. In fiscal 2008, items other than electricity were measured at key business facilities in Japan.
- *2In fiscal 2008, measurements were taken for 70.3% of the total area occupied by the domestic business facilities of the 13 group companies. Beginning in fiscal 2009 measurements were being taken for all business facilities in Japan. As for overseas business facilities, measurements were being taken for 44.2% of the total area of business facilities in fiscal 2009 and for all business facilities in fiscal 2010.
- *3Measurements were taken for 99.5% of all company vehicles used by the 13 group companies in Japan in fiscal 2008, and beginning with fiscal 2009, measures were being taken for all company vehicles inside and outside Japan.
- *4Measurements cover the centrally managed portion of domestic and international air travel by employees. After determining figures for fiscal 2009, the factors used to calculate distances traveled were revised, so figures announced for fiscal 2010 are not comparable to those for fiscal 2009.
- *5The measurement scope for water and sewage was changed after determining figures for fiscal 2009, so figures announced for fiscal 2010 are not comparable to those for fiscal 2009.
| Item | FY2008 | FY2009 | FY2010 | |
|---|---|---|---|---|
| Indirect Energy Consumption | (Actual Emissions Factor) | 170,537 | 207,805 | 207,933 |
| (Adjusted Emissions Factor) | – | 171,001 | 181,449 | |
| Power In Japan(Actual Emissions Factor) | 167,218 | 193,846 | 180,352 | |
| Power In Japan(Adjusted Emissions Factor) | – | 157,042 | 153,868 | |
| Power Overseas*2 | – | 6,526 | 19,612 | |
| Steam | 626 | 1,487 | 1,513 | |
| Hot Water | 347 | 810 | 894 | |
| Cold Water | 2,346 | 5,136 | 5,562 | |
| Diect Energy Consumption | 4,627 | 10,417 | 9,820 | |
| Kerosene | 565 | 1,243 | 1,253 | |
| Light Oil | – | – | 3 | |
| Heavy Oil | 1,352 | 925 | 179 | |
| LPG | – | 32 | 37 | |
| City Gas | 2,710 | 8,217 | 8,348 | |
| Energy Consumed by Employee Transportation | 8,358 | 14,931 | 15,921 | |
| Gasoline In Japan | 8,358 | 7,060 | 6,787 | |
| Gasoline Overseas | – | 480 | 512 | |
| By Airplane*3 | – | 7,391 | 8,622 | |
| Water Usasge*4 | 328 | 931 | 910 | |
| Tap Water | 107 | 308 | 303 | |
| Sewer Water | 221 | 624 | 606 | |
| Total CO2 Emissions | (Actual Emissions Factor) | 183,850 | 234,084 | 234,583 |
| (Adjusted Emissions Factor) | – | 197,281 | 208,100 | |
- *1The measurement scope is the same as that used for energy consumption. CO2 emissions factors are those prescribed by the Ministerial Ordinance on Calculation of Greenhouse Gas Emissions Arising from Business Activities of Specified Emitters (METI and MOE Ordinance No.3 amended on Mar 31,2010). For electricity consumed by business facilities in Japan, CO2 emissions for fiscal 2008 were measured based on the CO2 emissions intensity per unit of user end electricity announced by the Federation of Electric Power Companies of Japan. Beginning with fiscal 2009, CO2 emissions are being calculated based on the actual and adjusted emissions factors of individual electric power companies.
- *2Calculated based on "CO2 Emissions from Fuel Combustion" announced by the International Energy Agency publication.
- *3Calculated based on the GHG Protocol.
- *4Calculated based on Guidelines for Calculating Greenhouse Gas Emissions Other than Energy–Related CO2 under the Tokyo Cap–and–Trade Program (Published by the Tokyo Metropolitan Government's Bureau of Environment in June 2009).
CO2 Emissions Reduction Initiatives
Setting Objectives and Reducing CO2 Emissions
Over 90% of the CO2 emissions related to Mizuho's business activities arise from electricity consumption.
In fiscal 2007, Mizuho pledged to cut greenhouse gas emissions at its nine key business facilities 20% relative to the fiscal 2002 figure by fiscal 2012. Vigorous efforts to achieve that goal succeeded in meeting it in fiscal 2009, so we set a new objective in fiscal 2010. Now we are working to cut our greenhouse gas emissions at 13 business facilities to achieve a goal based on a new standard year. In the years to come, we will continue to aggressively pursue initiatives centered around energy efficiency measures that will cut our electricity consumption.
Reduction Target of CO2 Emissions
For the fiscal 2008 to fiscal 2012 timeframe, cut average CO2 emissions stemming from electricity usage 12% relative to fiscal 2000 at key business facilities*.
- *Key Business Facilities : MHBK Head Office, MHBK Administration Center 1, MHBK Administration Center 2, MHBK Administration Center 3, MHBK Information Center, MHBK Sanyo–Yasuda building, MHBK Telecom–Center, MHCB Head Office, MHTB Head Office, MHTB Fukagawa–Sagacho building, MHTB Tokyo Information Center, MHIR Information Center and Marunouchi 2–chome building office.
Changes in Greenhouse Gas Emissions at Key Business Facilities
| FY 2000 (Standard) | FY 2008 (Actual) | FY 2009 (Actual) | FY 2010 (Actual) | FY 2008 to FY 2010 Avg. | Target | |
|---|---|---|---|---|---|---|
| CO2 emissions (Tons of CO2) |
110,715 | 94,435 | 91,181 | 93,897 | 93,171 | 97,429 |
- Changes in Greenhouse Gas Emissions at Key Business Facilities

CO2 emissions factors used are those specified in the Guidelines for Calculating Specified Emitter Greenhouse Gas Emissions in Connection with Tokyo Cap–and–Trade Program, based on Attachment Table 1–3 of the Rules for the Ordinance for Enforcement of Tokyo Metropolitan Basic Environment Ordinance (Tokyo Metropolitan Government Rule No. 34 of 2001).
Reducing CO2 Emissions through Energy Efficient Facilities and Proper Management
Mizuho is making painstaking efforts to achieve its CO2 emissions reduction target by adopting energy efficiency measures and appropriate management practices mainly at the largest business facilities of group members. We are upgrading business facilities with energy–efficient air–conditioning equipment, LED lighting, and motion sensors, and installing high–efficiency window insulation film and inverter–based cooling equipment. At the same time, we are taking management steps like adjusting thermostats to use less cooling and heating, turning off some elevators, and using less lighting.
Following the Great East Japan Earthquake, we redoubled our energy saving efforts by using even less cooling and heating and turning some air–conditioning and heating units off altogether, using even less lighting in corridors and elevator halls, limiting elevator usage, limiting the use of some types of office equipment, and closing training, and health and welfare facilities on weekdays.
To make its branches more environmentally friendly, Mizuho Bank, established its "Mizuho Environmental Standards" in fiscal 2010 and it is now introducing "Eco Branches" that make use of energy–saving technologies like solar power systems and LED lighting.
What is more, its existing branches, by newly installing or upgrading to energy–saving equipment and devices to comply with the "Mizuho Environmental Standards," are realizing equivalent CO2 emissions reductions of 10%–15% (reductions of 8%–11% in equivalent energy volume (GJ)) compared to the previous year.
MHBK is also disclosing CO2 emissions data for all of its branches on an internal website in an effort to enhance visibility on this issue.
MHCB is working to save energy and reduce CO2 emissions by replacing business trips with telephone and video conferences whenever possible.
Looking ahead, we will continue our efforts to pursue proper management and other energy efficiency measures and increase environmental awareness among our employees in an effort to reduce CO2 emissions at each of our group business facilities.
Other global warming prevention initiatives
Promoting the Adoption and Operation of Environmentally Conscious Vehicles
Mizuho is moving ahead with the adoption of low–emissions vehicles. As of March 2011, 846 vehicles, which are 88.9% of all vehicles used by MHBK, MHSC, MHTB, and MHIS, are Low Emissions Vehicles quantified by the Tokyo Metropolitan Government and are classified as "Ultra–low" "Excellent–low," and "Good–low" emissions level vehicles.. In fiscal 2010, the vehicles used by these companies in Tokyo emitted 116.1 kilograms of NOx (nitrogen oxides).
MHBK and other group members also began taking a closer look at their infrequently used vehicles in January 2009 and are now gradually eliminating all motorbikes and reducing the number of automobiles they use in Japan, and introducing hybrid and other low–emissions vehicles and electrically assisted bicycles.
Looking ahead, we will continue our efforts to introduce low emissions vehicles, make distribution efficient, and reduce the number of automobiles. In addition, we will take initiatives to reduce CO2 emissions by encouraging drivers to drive environmentally, for example, by not letting the engine idle.
Initiatives Taken in Response to Local Ordinances and Requirements
In Japan, local environmental ordinances require that business facilities emitting more than a certain level of greenhouse gases submit and disclose plans for fighting global warming.
Tokyo Metropolitan Basic Environment Ordinance
The Tokyo Metropolitan Government introduced "the Tokyo Cap–and–Trade Program" (for large facilities) and "the Tokyo CO2 Emissions Reporting Program" (for small and medium scale facilities) with the revision of "Tokyo Metropolitan Basic Environment Ordinance" in July 2008. Under these Programs, Mizuho submitted plans and reports on five facilities in November 2010 as follows;
| Required Facilities | Tokyo CO2 Emission Reduction Plan (Japanese Text Only) | ||
|---|---|---|---|
| FY2010 | FY2011 | ||
| Mizuho Bank | Administration Center 1 | (PDF/37KB) |
(PDF/36KB) |
| Administration Center 2 | (PDF/35KB) |
(PDF/36KB) |
|
| Information Center | (PDF/36KB) |
(PDF/37KB) |
|
| Haramachi Building | (PDF/35KB) |
(PDF/36KB) |
|
|
Information Center | (PDF/36KB) |
(PDF/37KB) |
| Required Entities | Tokyo CO2 Emission Reporting Plan (Japanese Text Only) | |
|---|---|---|
| FY2010 | FY2011 | |
| Mizuho Corporate Bank | (PDF/16KB) |
(PDF/19KB) |
| Mizuho Bank | (PDF/29KB) |
(PDF/83KB) |
| Mizuho Trust&Banking | (PDF/146KB) |
(PDF/108KB) |
Saitama Prefecture, "The Global warming strategy evaluation method form"
Under "the Saitama Global warming strategy evaluation method form" in accordance with "the Saitama Prefecture Global Warming Strategy Promotion Ordinance", Mizuho submitted the evaluation method form on required facilities, including manned branches and some un–manned branches with only ATMs, in Saitama prefecture as follows;
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 Facility | CO2 Emissions Reduction Plan(Japanese Text Only) | CO2 Emissions Reduction Report(Japanese Text Only) |
|---|---|---|
| FY2011 | ||
| Mizuho Bank | (PDF/65KB) |
(PDF/52KB) |
Glossary
GHG Protocol
The GHG Protocol, announced by the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD), is a set of international standards for calculating and reporting business greenhouse gas emissions.





