NTT America Employs Vigilent Intelligent Energy Management Systems to Cut Energy Costs at its Two Largest North American Data Centers

Annual Energy Consumption Reduced by over 7.6 Million kWh, Saving more than $630,000 Annually

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New York, NY – November 8, 2011 – NTT America, in collaboration with NTT Worldwide Telecommunications and NTT Facilities USA, announced today that it has significantly reduced the energy required to cool its two largest North American data centers: the Sterling Data Center in Sterling, Virginia and the San Jose Data Center in San Jose, California. At these data centers, NTT America will collectively reduce electricity consumption by over 7.6 million kWh and carbon emissions by over 10 million lbs. a year, saving the company a projected $630,000 annually in energy costs. This week, NTT America’s vice president of data center infrastructure, Tarif Abboushi, will speak on these and other advancements in data center cooling at the 2nd Annual Fall Forum on Financing, Investing & Real Estate Development for Data Centers, in Los Angeles, California.

As part of several broad energy efficiency initiatives undertaken company-wide, NTT America continually monitors advancements in energy conservation technologies. NTT America, NTT Worldwide Telecommunications, a firm that performs global data center operations for the NTT Communications Group, and NTT Facilities USA, selected Vigilent, a leader in intelligent energy management systems, as NTT America¡¦s energy management partner after substantial due diligence and a highly successful pilot project at the NTT America San Jose Data Center. Following on proven performance of the Vigilent system during the pilot project, NTT America extended deployments at both the San Jose and Sterling data centers. The deployments at the two data centers encompassed 178 DX and chilled-water CRACs (Computer Room Air Conditioners), and in total more than 3,000 racks of servers, within 135,000 sq. ft. of floor space.

The Vigilent system was chosen based on delivery of significant energy savings and operational benefits, which include uptime protection through load balancing of cooling resources, improved thermal stability and a reduction in the number of hot and cold spots throughout the data center. Equally important decision factors were ease of Vigilent system implementation and uninterrupted service at both data centers. Real-time and continuous cooling optimization, combined with powerful “what-if” planning tools, also supported NTT America¡¦s decision to integrate Vigilent technology as a core part of its operational infrastructure.

The Vigilent system is uniquely able to deliver cost saving benefits through dynamic, automated control of extremely complex cooling environments utilizing advanced, artificial intelligence technology. The system employs a wireless mesh network of sensors which provide real-time feedback from tens to thousands of data points throughout the data center to an artificial intelligence engine. The engine incorporates this data, along with thousands of other variables, to dynamically and continually adjust air cooling and flow equipment for maximum efficiency in alignment with changing IT loads, within pre-specified environmental parameters.

Key Statistics

  • In addition to direct energy savings, NTT America identified potential indirect financial benefits totaling $210,000 annually. These benefits, attributed to using Vigilent technology, were derived from reduced maintenance costs, increased cooling capacity, improved thermal management and deferred capital expenditures.
  • PUE (Power Usage Effectiveness), a key measure of data center energy efficiency, was improved by more than 10 percent at the Sterling site. PUE at the San Jose site was improved by more than 5 percent.
  • ROI for the entire project is under two years (including all related equipment, installation, and multi-year support services).

Executive Quotes

“We recognize the importance of reducing the amount of energy required to cool the data centers NTT America operates. Equally important is our enterprise customers¡¦ interest in, and support of, energy efficiency both from the environmental and cost reduction avenues. As a key driver for the future of the data center, NTT America will continue to evaluate, support and deploy technologies that can be environmentally sound and cost effective for our customers,” said Kazuhiro Gomi, president and CEO of NTT America.

“We are delighted to partner with NTT Facilities USA to support NTT Worldwide Telecommunications’ and NTT America’s pioneering and innovative green data center initiatives,” said Mark Housley, CEO of Vigilent. “Our joint efforts at NTT America’s Sterling and San Jose facilities have provided a solid foundation upon which we plan to expand our partnership efforts on a worldwide basis, including an immediate push into the rapidly-growing data center markets throughout Asia.”

Supporting Resources

Press Release: NTT America Deploys Bloom Energy Servers Running on Renewable Biogas at San Jose Data Center



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About NTT America

NTT America is North America’s natural gateway to the Asia-Pacific region, with strong capabilities in the U.S. market. NTT America is the U.S. subsidiary of NTT Communications Corporation, the global data and IP services arm of a Fortune Global 500 telecom leader: Nippon Telegraph & Telephone Corporation (NTT). NTT America provides world-class Enterprise Hosting, managed network, and IP networking services for enterprise customers and service providers worldwide. For additional information on NTT America, visit us on the Web

About NTT Facilities USA

NTT Facilities USA is a wholly owned subsidiary of NTT Facilities, a leader in designing and constructing state-of-the-art information facilities that support communications and Internet infrastructure. NTT Facilities has managed the Japanese facilities of NTT Group, the largest telecommunications conglomerate in Japan, for more than a century. NTT Facilities’ more than 100 years of experience in management of mission-critical facilities underpins the company’s comprehensive, one-stop, integrated engineering services portfolio for data centers, telecommunications and commercial buildings, and related facilities. NTT Facilities is now focusing on green IT, including energy efficient data centers, buildings, and mega solar power generation through integrated technologies of IT x Energy x Architecture.

About NTT Worldwide Telecommunications Corporation

NTT Worldwide Telecommunications (NTT-WT) provides powerful data center infrastructure for NTT Communications Group and its global affiliates. The company offers data centers worldwide, one of the most important foundations of ICT, and provides highly value-added services on a global scale as the trusted partner of multinational companies. Using proprietary quality standards to support the procurement of data centers, NTT-WT focuses on high-quality in its procurement activities, including sustainable quality improvement and the continuous provision of safe and secure data centers. For more information, please visit

About NTT Communications Corporation

NTT Communications provides a broad range of global networks, management solutions and IT services to customers worldwide. The company is renowned for reliable, high-quality security, hosting, voice, data and IP services, as well as expertise in managed networks and leadership in IPv6 transit technology. NTT Communications’ extensive infrastructure includes Arcstar Global IP-VPN and Global e-VLAN, as well as a Tier 1 IP backbone reaching more than 150 countries in partnership with major Internet service providers, and secure data centers in Asia, North America and Europe. NTT Communications is the wholly-owned subsidiary of Nippon Telegraph and Telephone Corporation, one of the world’s largest telecoms with listings on the Tokyo, London and New York stock exchanges. Please visit

About Vigilent

Vigilent is the leader in intelligent energy management systems for data centers, telecommunications facilities and large, commercial buildings. Pioneering the application of advanced, artificial intelligence technology to the real-time demands of energy usage, Vigilent delivers significant reductions in energy costs while protecting uptime and increasing resiliency in data centers, and offering tenant comfort and greener operations in large buildings. Vigilent is a privately-held firm located in the technology corridor of San Francisco’s East Bay and is committed to green energy solutions that make for a more sustainable planet. For more information,

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NTT America Contact:

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