Efforts to reduce electricity consumption
Over 90% of the NTT Group's CO2 emissions are attributable to electrical power consumption by offices and communications equipment. To reduce our demand for electrical power, we are implementing a groupwide Total Power Revolution (TPR) campaign.
Through this campaign, we have been promoting energy management schemes for the 4,000 buildings that our various companies occupy 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. These various initiatives resulted in a saving of 133 million kWh of electricity throughout the entire NTT Group in fiscal 2008 compared with fiscal 2007.
We have also launched a Green NTT initiative for promoting the use of renewable energy such as solar power, and we plan to deploy the equivalent of 5 megawatts of solar power systems by fiscal 2013 under a limited liability partnership called NTT-Green LLP.
* DC power supply
Using electricity delivered from power companies requires converting the electricity from alternating current (AC) to direct current (DC) or DC to AC depending on type of electronic device. To reduce energy losses that occur during such conversion processes, we supply each floor with electricity in the same DC mode that it is in when it enters transformers.
Green NTT model for deployment of solar systems etc.
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Group vehicle fleet now includes 554 hybrid and natural gas vehicles (as of March 31, 2008).
When renewing leases on company vehicles, NTT Group companies are now switching to low-emission cars to cut down on CO2 emissions. At the end of fiscal 2008, the entire NTT Group had a total of 554 low-emission vehicles — 369 hybrid cars and 185 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 maintaining suitable tire pressure.
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157 NTT Group companies participated in the Ministry of the Environment's Team Minus 6% project (as of March 27, 2008).
Under the Kyoto Protocol that came into force on February 16, 2005, Japan promised to reduce its CO2 emissions to 6% below the 1990 level during the period of 2008-2012. The NTT Group is participating in Team Minus 6%, a national project launched by the Ministry of the Environment to contribute to the achievement of this target.
Group companies are striving to save energy in various ways, including promoting the Cool Biz and Warm Biz dress codes respectively in summer and winter to reduce heating and air conditioning-related energy consumption, turning off lights during lunch time, and encouraging the use of stairs instead of elevators by implementing a "2 Up 3 Down" rule.
As of March 27, 2008, 157 NTT Group companies were participating in Team Minus 6%, and all Group companies are planning to join the initiative moving forward.
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Eco Drive (eco-friendly driving) training sessions were held for workers driving company vehicles.
To help reduce CO2 emissions through improving the fuel economy of company vehicles, NTT East's Iwate branch held Eco Drive training sessions for all of its employees between July and September 2007 as part of its environmental education program.
The training sessions focused on ways of improving fuel economy, including (1) avoidance of unnecessary idling, (2) avoidance of rapid acceleration and braking, and (3) limited use of air conditioning. As a result, fuel economy for fiscal 2008 rose year-on-year by 0.22 km/l to 12.05 km/l. Similar sessions are being held in fiscal 2009 to further boost fuel economy by practicing eco driving in all driving phases.
Eco Drive training session
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Curbing CO2 emissions through joint delivery and modal shifts in transporting cargo
NTT LOGISCO has actively implemented a joint delivery system wherein cargo for multiple customers is combined and delivered using a single vehicle to increase logistics efficiency. We are also promoting a modal shift from road to rail and ferry — cargo transport modes that emit less CO2 than road transport.
Joint delivery system
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