Promoting group-wide power consumption reductions through the Total Power Revolution campaignWorking to improve global warming prevention emissions intensity index through the further deployment of energy-efficient ubiquitous broadband servicesPreventing global warming
Over 90% of the NTT Group's CO2 emissions are attributable
to electrical power consumption related to the provision of information
and communications services, a situation that prompted
the NTT Group to launch its Total Power Revolution (TPR)
campaign and work as one to conserve energy. Thanks to TPR
campaign programs that encouraged the introduction of energy-
efficient electrical power and air conditioning equipment,
the Group reduced its electrical power consumption in fiscal
2005 by 170 million kWh.
Despite this reduction, however, 4.763 million tons of CO2 emissions
were attributable to NTT Group companies in fiscal
2005, a major increase over the previous year. Part of this increase,
however, is the result of revisions to the formula used
to convert electrical power consumption to CO2 emissions.
Our global warming prevention emissions intensity index also rose compared with the previous year for both
our telecommunications carriers and our other group companies.
However, evaluating this year's performance with the
same formula used in last year's evaluation results in an improvement
of approximately 5% to the emissions intensity index
by non-carrier group companies due to lower electrical
power consumption in office buildings. In contrast, our telecommunications
carriers showed an approximately 1.6% increase
due to expansion of facilities for broadband and mobile
phone services. In the light of these figures, the NTT Group
recognizes the need to continue with its efforts to install energy-
efficient equipment and implement other measures to achieve
its emissions intensity reduction target for the prevention of
global warming.
- In March 2006, revisions to the Law Concerning the Promotion of the Measures to Cope with Global Warming changed the conversion factor for
kilograms of CO2 emitted per kWh of electrical power consumption from 0.378 kg/kWh for fiscal 2004 to 0.555 kg/kWh for fiscal 2005.
Initiatives
Efforts in line with Tokyo's program on measures against global warming
The Tokyo Metropolitan Government in March 2005 revised
its Ordinance on Environmental Preservation and instituted a
CO2 Emission Reduction Plan.
This project requires businesses that emit more than a certain
level of greenhouse gases to prepare and submit plans for
preventing global warming and to report results. Reports are
required at both interim and final stages, and all plans and reports
are evaluated and published. Of the plans submitted by
NTT group companies for their buildings, 13 received the highest
"double-A" grade in planning stage evaluations announced
in December 2005.
NTT Communications' main building in Tokyo's Otemachi is
notable for having been designed specifically with energy conservation
in mind. The air conditioning system for its communications
equipment room features various innovations that
have earned it a spot on the Tokyo Metropolitan Government's
website as an example of ingenuity in appropriate temperature
control.
Telecommunications equipment rooms at NTT Communications were previously equipped only with air conditioning temperature sensors attached to their walls, which meant that whole rooms needed to be air-conditioned according to the temperature of their hottest points, the equipment racks that generate considerable heat. NTT Communications accordingly installed a temperature monitoring system with rack-based sensors (one sensor for every five racks) enabling the constant monitoring of temperature distribution within the room from a remote location.
Air is also channeled to the racks from fans placed beneath the floor to disperse heat and keep them at an appropriate temperature. This targeted cooling of the hottest points in the room has reduced the overall environmental impact of air conditioning.
Participating in Team Minus 6%
As part of their global environment conservation activities, NTT Group companies participate in Team Minus 6%, a national initiative to prevent further global warming.
Team Minus 6% aims to reduce greenhouse gas emissions by 6% - a promise that Japan made to the world in the Kyoto Protocol.
NTT Group companies have each set themselves targets under this initiative.
Examples of NTT Group company targets
- Setting office air conditioners to maintain temperatures no lower than 28C in hot weather
- Encouraging employees to dress more lightly in summer (the Cool Biz initiative.)
- Reminding employees not to waste power and water
- Using vehicles that require less energy, and encouraging eco-driving
- Reducing waste
Promoting the use of low-emission vehicles
Vehicles are leased to the NTT Group from NIPPON CAR SOLUTIONS (established through the merger of NTT Auto Leasing with Century AUTO LEASING), a company that proactively provides low-emission and fuel-efficient vehicles certified by the Ministry of Land, Infrastructure and Transport as part of its ISO14001 efforts.
Consequently, as of March 31, 2006, the number of low-emission cars and fuel-efficient cars leased by the NTT Group grew by 2,067 and 2,265 respectively compared with fiscal 2004, and low-emission cars now make up 47.7% of all group company vehicles. NIPPON CAR SOLUTIONS also equips all of its cars with an originally developed car navigation system that guides drivers to take the shortest and most efficient routes. Vehicle movement data collected from navigation systems is also analyzed to provide feedback for eco-driving guidelines and other activities.
