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Green NTT
Groupwide efforts to promote the use of renewable energy
The NTT Group is working on two fronts to reduce CO2 emissions on the basis of the slogan, "Connect. That's Eco." The first front is to reduce the CO2 emissions of society as a whole through services provided by the NTT Group. The second is to reduce the CO2 emitted in the NTT Group's business activities.
"Green NTT" is our policy for promoting the generation and utilization of renewable energy, particularly solar energy, with the aim of reducing the CO2 emissions caused by the NTT Group's business activities. The NTT Group is committed to reducing greenhouse gases and contributing to the sustainable development of our society through the groupwide promotion of "Green NTT."
Initiative:
Active utilization of solar energy systems
Most of the CO2 emitted through the NTT Group's business activities is from the use of electricity. To date, we have actively engaged in energy conservation through our Total Power Revolution (TPR) initiative.
To further reduce our impact on the global environment, the NTT Group promoted energy creation through the active utilization of power systems exploiting natural energy, mainly solar energy, with the aim of expanding our total power system capacity to 5 megawatts by fiscal 2012.
As a result, our total power system capacity grew to 5.1 megawatts by the end of fiscal 2012, attaining our initial goal.
Solar power systems installed through our Green NTT initiative
Note: These are some of the 170 locations nationwide.
Sapporo Nishi Building (LLP)
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- Location: Sapporo, Hokkaido
- System capacity (PCS capacity): 50 kW
- Installation configuration: Rooftop installation
Installed on a communications building
Rooftop installation for effective utilization of space -
Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
NTT EAST Yamada Exchange Building (LLP)
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- Location: Shimohei County, Iwate Prefecture
- System capacity (PCS capacity): 10kW
- Installation configuration: Rooftop installation
Rooftop utilization for effective use of space and mounting cost reduction.
Reinstalled on roof top as a symbol of revival in the quake-hit Tohoku region. -
Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
Tohoku Distribution Center (LLP)
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- Location: Sendai City, Miyagi Prefecture
- System capacity: 80 kW
- Installation configuration: Rooftop installation
Efficient use of space that takes into account the rooftop configuration (flat roof). Cost reduction through performing basic mounting work together with waterproofing of the roof of the building.
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Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
NTT EAST Shichigahama Exchange Building (LLP)
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- Location: Miyagi County, Miyagi Prefecture
- System capacity (PCS capacity): 10kW
- Installation configuration: Rooftop installation
Rooftop utilization for effective use of space and mounting cost reduction.
Reinstalled on roof top as a symbol of revival in the quake-hit Tohoku region. -
Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
Tsukuba Research and Development Center (LLP)
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- Location: Tsukuba City, Ibaraki Prefecture
- System capacity: 403.2 kW
- Installation configuration: Ground installation
Pile mounting system for excellent economic and environmental performance.
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Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
Musashino Research and Development Center
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- Location: Musashino City, Tokyo
- Panel capacity: 36.3 kW
- Installation configuration: Building Integrated Photovoltaic Module
PV system with integrated louvers to maintain the buildingfs aesthetic appearance.
East Japan Logistics Center (LLP)
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- Location: Kazo City, Saitama Prefecture
- System capacity: 302.4 kW
- Installation configuration: Rooftop installation
Double roofing structure for reduced risk of leaking, etc., into the building.
Rooftop utilization for effective use of space and mounting cost reduction. -
Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
NTT COMWARE BILLING SOLUTIONS CORPORATION
Shutoken Center (LLP)
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- Location: Kazo City, Saitama Prefecture
- System capacity: 230 kW
- Installation configuration: Rooftop installation
Rooftop utilization for effective use of space and mounting cost reduction.
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Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
NTT East Training Center
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- Location: Chofu City, Tokyo
- System capacity: 555 kW
- Installation configuration: Rooftop installation
Winner of the 1996 New Energy Award. At the time of installation, this was one of the worldfs largest rooftop solar power systems.
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Chiba Distribution Center (LLP)
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- Location: Ichikawa City, Chiba Prefecture
- System capacity (panel capacity): 481.6 kW
- Installation configuration: Rooftop installation
Stand-alone power circuit capable of providing backup power in case of blackout or other commercial power failure.
Rooftop utilization for effective use of space and mounting cost reduction. -
Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
NTT DoCoMo Yokohama Media Tower
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- Location: Yokohama City, Kanagawa Prefecture
- Panel capacity: 18.6 kW
- Installation configuration: Building Integrated Photovoltaic Module
Transparent photovoltaic solar cells are used for the handrails and walls to harmonize with the rest of the building and make effective use of limited space.
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Yokosuka Research and Development Center
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- Location: Yokosuka City, Kanagawa Prefecture
- Panel capacity: 27.8 kW
- Installation configuration: Rooftop installation
The system is installed using former laboratory antenna mounts on the roof for effective use of resources.
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NTT DoCoMo R&D Center
- Location: Yokosuka City, Kanagawa Prefecture
- Panel capacity: 68.5 kW
- Installation configuration: Rooftop installation
Some of the solar cells are installed in line with the gentle curve of the building. A wind power system is also utilized.
Nagoya Logistics Center (LLP)
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- Location: Niwa-gun, Aichi Prefecture
- System capacity: 131.04 kW
- Installation configuration: Rooftop installation
Rooftop (corrugated roof) utilization for effective use of space and mounting cost reduction.
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NElectricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
West Japan Logistics Center (LLP)
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- Location: Sakai City, Osaka-fu
- System capacity: 160 kW
- Installation configuration: Rooftop installation
Efficient use of space that takes into account the rooftop configuration (corrugated roof), and mounting cost reduction.
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Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
NTT West Kochi Branch
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- Location: Kochi City, Kochi Prefecture
- Panel capacity: 25.9 kW
- Installation configuration: Rooftop installation
A total of 200 kW installed in 12 locations in Kochi Prefecture under the Ministry of Environment's Megawatt Solar Share-Use Model Program in fiscal 2008.
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NTT COMWARE BILLING SOLUTIONS CORPORATION
Kyusyu Center (LLP)
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- Location: Fukuoka City, Fukuoka Prefecture
- System capacity (PCS capacity): 60 kW
- Installation configuration: Rooftop installation
Rooftop utilization for effective use of space and mounting cost reduction.
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Electricity generated through NTT-Green LLP solar power program Date Time Electricity generated (Watts) kW Electricity generated today* kWh Temperature deg C Solar intensity kW/㎡ *The environmental value from electricity generated (portion consumed in-house) belongs to the holder of the Green Power Certificate.
Specific initiatives and promotion mechanisms:
Establishment of "NTT-Green LLP" as the organization for promoting "Green NTT" activities
To promote the "Green NTT" initiative, the NTT Group established the "NTT-Green Limited Liability Partnership (LLP)" in August 2008.
One of the roles of the LLP is to promote the effective installation of solar energy systems in laboratories, office buildings, and other real estate properties owned by various companies of the NTT Group. Group companies which cannot secure locations for installing solar energy systems are not excluded from investing and participating in the LLP; by installing solar facilities jointly with other companies, they can also contribute to environmental conservation.
Another role of the LLP is the issuing of "Green Power Certificates (*1)." With the approval of the Green Energy Certification Center (*2), the LLP issues Green Power Certificates to investing companies according to the amount of power generated by the equipment installed and in line with the amount invested.
Outline of "NTT-Green LLP"
- Certificates which represent proof of the environmental added value of electricity generated by a renewable energy source. The certificates can be sold, traded, or bartered.
- A third party certification organization for authorizing green energy value, established with the purpose of improving the reliability of green energy trading and set up independently of power companies, green energy traders, and green energy buyers.
The future of Green NTT:
Expanding the activities of Green NTT
In the future, we plan to expand our Green NTT program of renewable energy utilization to organizations outside the NTT Group.
By having not only NTT Group companies but also municipalities, other corporations, and other entities invest, participate, and provide space for the LLP, it will become possible to install bigger and more efficient solar panels and other facilities for renewable power generation. In this way, we plan to continue expanding the use of solar and other forms of renewable energy.
Environmental protection activities
