With the aim of reducing greenhouse gas emissions and achieving a low-carbon society, the NTT Group is working to reduce CO2 emissions from its internal business operations and improve energy efficiency in society at large by driving the adoption and spread of ICT services and providing customers with solutions, services, and products that contribute to environmental management.
Deploying energy-efficient office and communications equipment
Over 90% of the CO2 emissions created by NTT Group business operations are attributable to office and communications equipment power consumption, and so reducing CO2 emissions depends in large part on cutting the amount of energy used by such equipment. The NTT Group has created a groupwide energy conservation strategy called Total Power Revolution (TPR) to achieve such reductions.
To promote efficient energy management at the 4,000 NTT Group facilities nationwide, we have installed energy-efficient electrical power units and air conditioning systems, switched to energy-saving DC power supply for servers, routers, and other broadband equipment, and installed renewable energy systems using solar and wind power. Improvements made through the TPR program reduced power consumption within the NTT Group by 150 million kWh in fiscal 2009.
In May 2008 we also launched the 'Green NTT' initiative to promote use of solar and other renewable energy with the goal of deploying enough renewable energy systems to generate 5MW by fiscal 2013. As of the end of fiscal 2009, we were generating a total of 2.1MW at 120 NTT facilities nationwide.
NTT FACILITIES' hybrid wind/solar power station on the island of Kumejima
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167 NTT Group companies participated in the Ministry of the Environment's Team Minus 6% project (as of May 15, 2009).
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Eco Drive workshops for drivers of company vehicles
NTT East Iwate Branch Group has organized Eco Drive workshops to reduce CO2 emissions by encouraging eco-friendly driving to improve the mileage of company vehicles. This program resulted in a 3.9% improvement in mileage in fiscal 2009 compared with fiscal 2005, an achievement that was recognized with an excellence award in the 2008 Eco Drive Contest.
Eco Drive workshop
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Optimizing temperature in communications facilities
To optimize the temperature environment within communications facility machine rooms that house so much of its communications equipment, NTT West Group is developing means of improving air circulation control to boost the amount of cool air reaching heat producing areas and recover more waste heat from communications equipment. These efforts help not only to maintain the stability of services, but also to reduce the energy consumption of air conditioning systems.
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Building of test data center to promote the ICT Ecology Project
NTT DOCOMO Group is implementing an ICT Ecology Project throughout its communication facilities to save energy by employing 'intelligent' air conditioning, power saving DC-fed server systems, and other state-of-the-art energy saving technology.
As part of this project, NTT DOCOMO and NTT FACILITIES joined forces in February 2009 to launch the Tachikawa ICT Ecology Center as a facility for testing the latest energy saving technology and putting it to practical use. The Ecology Center is aiming for a 50% reduction in CO2 emissions.
Tachikawa ICT Ecology Center
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