NTT Group CSR > Initiatives to Prevent Global Warming

Initiatives to Prevent Global Warming

Reducing CO2 emissions through TPR campaign that cut electricity consumption by 124 million kWh
Reducing the environmental impact of society as a whole by developing and deploying ICT services

Initiatives to reduce power consumption

Over 90% of the NTT Group's CO2 emissions are attributable to electrical power consumption, a situation that prompted the NTT Group to launch its Total Power Revolution(TPR)campaign and work as one to reduce power usage.
Through its TPR campaign, the NTT Group had been promoting energy management schemes for the 4,000 buildings that it occupies throughout Japan. In addition to deploying energy efficient electrical devices and air conditioning equipment and switching to the use of energy-saving DC power supply for broadband equipment such as servers and routers, the TPR campaign also calls for the use of clean energy systems such as solar and wind power. Furthermore, many NTT Group companies have registered with the Ministry of Environment's Team Minus 6% project, and have initiated "CoolBiz" and "WarmBiz" dress codes. These various initiatives succeeded in saving 124 million kWh of electricity throughout the entire NTT Group in fiscal 2007.

Initiatives to reduce environmental impacts in logistical and sales operations

Compliance with the Revised Energy Conservation Law

The Revised Energy Conservation Law that came into effect on April 1, 2006 requires the implementation of energy conservation initiatives also by third party cargo contractors hired to handle shipping and logistical operations.
Each NTT Group company also calculates and evaluates approximate shipping volumes based on our newly established NTT Group Shipping Volume Calculation Manual.
NTT LOGISCO is in charge of comprehensively managing and controlling logistics throughout the entire NTT Group, and has been devising further efficiencies through arranging joint transport and deliveries, and promoting modal shifts in our logistical operations. In fiscal 2007, NTT Group shipped 5,830 tons of goods using transportation modes with low CO2 emissions like rail and ferry services.

Using low-emission vehicles

When renewing the lease on a company vehicle, each NTT Group company has been switching to low-emission cars to cut down on CO2 emissions. At the end of fiscal 2007, the entire NTT Group had a total of 603 low-emission vehicles, which included 387 hybrid cars and 216 cars that run on natural gas. We also made efforts to reduce fuel consumption and cut down on CO2 emissions by avoiding unnecessary idling and checking tire pressure.

Index of Activities
Activities	Company
Conserving logistics energy consumption	NTT Communications

Team Minus 6%: A Japanese government initiative to drive the achievement of its commitment to reduce Japan's greenhouse gas emissions to a level of 6% below the level of 1990.
"CoolBiz" and "WarmBiz": Japanese government initiatives to save energy and reduce GHG emissions through promoting dress codes that help limit the use of air conditioning.
Modal shift: Switching from one mode of shipping to another.

Environmental solutions and efforts to reduce the environmental impact of NTT group products and services

The NTT Group is engaged in efforts to reduce the environmental impact of its products and services in order to prevent global warming.
NTT DoCoMo has been working to develop more energy-efficient mobile phones, while NTT FACILITIES has also endeavored to reduce environmental impacts across a range of fields. For example, it provides stand-alone solar LED lighting systems with zero CO2 emissions, and low-energy air conditioning solutions. It also participated in a "mega-solar" project launched in Saku City, Nagano Prefecture, in September 2006 that provided an opportunity to use its experience in developing environmental technologies in a clean energy project.
NTT DATA too has contributed by providing a service for supporting the calculation of CO2 emissions at business premises and drafting reports that comply with the newly Revised Energy Conservation Law and the Law Concerning the Promotion of the Measures to Cope with Global Warming.

Urban heat island mitigation

With the aim of protecting the natural environment, the NTT Group is actively pursuing efforts to install rooftop gardens and wallside greenery systems on company buildings in an effort to reduce urban heat island(UHI)effects that are generated in cities.
NTT Advanced Technology is also promoting heat-blocking paint applications to mitigate UHI effects.

Topics
Countering UHIs with sweet potatoes In a joint UHI research initiative, in May 2006 NTT FACILITIES and NTT Urban Development installed an aerohydroponic cultivation system to grow sweet potatoes on the rooftop of the Urban Net Mita Building, located in an area of Tokyo designated for heat island mitigation measures. The experiment showed that the exceptional heat-blocking performance of the sweet potato plants reduced the surface temperature of the roof by up to 27? and that nearly 80% of the net solar energy reaching the sweet potato plants was being dissipated through transpiration from the surface of the leaves. Comparative study of UHI mitigation by rooftop greenery Daily change of surface temperatures on the rooftop

Index of Activities
Activities	Company
Rooftop and wallside greenery system initiatives	NTT Communications
Development and promotion of IR reflective paint for the heat island phenomenon	NTT Advanced Technology

Net solar energy: The amount of net solar radiation received, calculated by subtracting the amount of solar radiation reflected by the Earth's surface from the total amount of solar radiation received.

Efforts to reduce environmental impact by offering ICT services

The spread of ICT devices does of course increase electricity consumption, but providing ICT services can drive the more efficient usage of energy and resources and reduce the CO2 emissions of society as a whole by boosting the efficiency of production processes, reducing the use of transportation and delivery of goods, and reducing the production of physical media such as books, CDs, and DVDs by enabling the download or streaming of content. Calculations performed by NTT indicate that the use of ICT services in Japan during fiscal 2007 saved energy equivalent to 1.9% of the country's energy consumption.
With the enactment of the NTT Group's Vision for Environmental Contribution in fiscal 2007, we declared our commitment to protecting the global environment by further expanding our business operations to provide ICT services.
As an environmental management system initiative, NTT Laboratories evaluates the environmental impact reduction effects of leading R&D achievements that have been adopted by Group companies, and this information can be used as a tool to support sales activities. For example, an e-government system developed by NTT Service Integration Laboratories that enables the online execution of various local authority-related procedures by members of the public was found to have clear environmental merits, cutting related CO2 emissions by 68% through reducing travel to local authority offices and consumption of paper application forms.

Energy saved and consumed through ICT

This is a graph showing reduction in energy consumption through use of ICT, and total energy consumption of ICT devices and network equipment. In fiscal 2007.

- A portion of FY 2006 data was revised due to changes in government-supplied data regarding e-commerce.

Index of Activities
Activities	Company
Reducing energy needed for travel and protecting forest resources through visual communications using PC Communicator	NTT Cyber Solutions Laboratories
Saving energy in both the home and office through OSAP	NTT Cyber Solutions Laboratories
Reduction of the move energies by offer of a Web meeting system	NTT IT