AT TOKYOEnvi ro nmental Initiatives

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Eco-friendly while Providing Peace of Mind
We, AT TOKYO data centers, promise safety and security
for your business, maintaining high-level service
and zero-downtime operation.
We remain highly conscious of the environment,even as we consume large amounts of energy
and operate various facilities every day.

Safety and security ofzero downtime foryour business.

Environmental
considerations such asenergy conservation
and recycling.

AT TOKYO aims to provide environmentally friendly data centers.
Three of our data centers have been evaluated for our environmental initiatives and certiﬁed
as “Top-Level Facilities” for outstanding global warming countermeasure efforts
Environmental consideration through energy-saving
initiatives is essential for data centers, which
consume large amounts of energy. AT TOKYO has
been highly evaluated for its various environmental
initiatives, especially in regard to facility operation,and certiﬁed by the Tokyo Metropolitan Government(TMG) as “Top-Level Facilities” for outstanding
global warming countermeasure efforts* since 2010.
Currently, three data centers are certiﬁed. We intendto work even harder to contribute to theenvironment by continuing to increase ouremployeesʼ awareness of energy conservation.

2015-T0506

2016-T2008

2017-T1896

AT TOKYO Chuo
Data Center (CC1)

AT TOKYO Chuo Data
Center #2 (CC2)AT TOKYO Data
Center #3 (DC3)* The Tokyo Metropolitan Government-certiﬁed facilities that havedemonstrated excellence in both design and operational efforts tocounter global warming. Among these, extremely excellent facilities
are deﬁned as “Top-Level Facilities”. AT TOKYOʼs three certiﬁed
data centers all received “Top-Level Facilities” certiﬁcation.

AT TOKYOʼs Energy Conservation by Numbers
With the realization of a “decarbonizedsociety” in mind, the Tokyo Metropolitan
Government has announced the goal of
reducing greenhouse gas emissions in Tokyo
by 30%, compared to 2000, before 2030.
AT TOKYO not only meets greenhouse gas
reduction obligations*, but also contributes
to reducing environmental burdens bycutting actual emissions through a range ofenergy conservation efforts.
* Each facility is required to reduce actual emissions toward
the greenhouse gas emission target amount agreed with theTokyo Metropolitan Government. If actual emissions arereduced below the agreed amount, a part of the reductions
can be saved and banked as CO2 reduction credit.

Speciﬁed Greenhouse Gas Actual Emissions and Reduction for Fiscal Year 2018
Reduction rate

100%

75%

Reduction

39 %Reduction rate
11,728t

17%

Reduction rate

21%

2,903t57,952t

50%

25%

0%

Actualemissions

90,555t

57,176t

AT TOKYO Chuo Data Center (CC1) AT TOKYO Chuo Data Center #2 (CC2)

10,905t

AT TOKYO Data Center #3 (DC3)● The target emission amount agreed with the Tokyo Metropolitan Government (TMG) isindicated as 100%. Reduction = Emission amount agreed with the TMG - Actual emissions

Reuse of Cooling Water to be Disposed of and other Environmental Considerations
The heat produced by AT TOKYO Chuo Data Centerʼs server room isprocessed by cooling water being partly evaporated in a cooling tower.
The inclusions of cooling water become dense due to evaporation, sodensity is adjusted through water supply and drainage. At this point, byreusing the cooling water/blow-down water to be disposed of via anadvanced ﬁltration device, we strive to reduce water consumption. As aresult, we succeeded in reusing 39% of blow-down water on average peryear. Other than that, we proactively take environmental initiatives suchas by turning data centers into green spaces and installing solar panels.
Blow-down Water Reuse Rate during 2019

Average 39%

January toMarchApril toJuly to October toJune September December

Blow-downWater

9,292m3

8,619m3

8,795m3

7,670m3

Reused Water

3,435m3

3,157m3

3,253m3

3,416m3

37%

37%

37%

45%

Reuse Rate

Cooling tower

Solar panel

Wall greening

110,000t-CO2 Reduction Credit Donated tothe Tokyo Metropolitan Government

In June 2019, AT TOKYO donated 110,000t-CO 2 to the Tokyo Metropolitan
Government among the CO2 reduction credit banked. AT TOKYO fully agrees
with the “Zero Emission Tokyo*” initiatives the Tokyo Metropolitan Government
is aiming for and cooperates in this way for carbon offset.

Commendation by the Tokyo Metropolitan Government (TMG)* The Tokyo Metropolitan Governmentʼs vision of keeping global warming under 1.5 ℃ andcontributing to reduce CO2 emissions to net zero by 2050.

INTERVIEW
Behind the Scenes in AT TOKYO
Data Centers that Are Friendly to the Environment
We, AT TOKYO, operate data centers that excel in connectivity with major cloud service providers and telecommunications
carriers in- and outside Japan with 24/365 zero downtime operation, and we are certiﬁed by the Tokyo Metropolitan Government
as “Top-Level Facilities” for three of our data centers. It is a rare occurrence for a company to have as many as three data centerscertiﬁed as “Top-Level Facilities” in Tokyo. Weʼd like to introduce the back story of receiving this certiﬁcation.

The Crucial Importance of Retaining Top-Level Facilities CertiﬁcationEvery Year

Our customers place great importance on environmental considerations, and “Top-Level Facilities”
certiﬁcation provides strong evidence of our environmental friendliness. “Top-Level Facilities”
update inspection takes place every ﬁve years, including more than 200 inspection items and witha level of standards that rises every time, so our daily activities become increasingly important. I
feel that it would be a difﬁcult task to maintain and update this certiﬁcation even if we receive it,
without the strong will and determination of everyone, as a company.

Norio Mitsui, Group Manager, Integrated Monitoring Group, Facility Operations Dept., Engineering & Services Div.

The Difﬁculty of Energy Conservation at Data Centers and the Great
Value of Achieving It

Data centers consume enormous amounts of electricity. For such data center businesses, we canconserve energy by being creative with air conditioning systems such as by employing heat sources
efﬁciently and circulating cool air effectively. We cannot directly control the energy consumptionof our customersʼ assets, devices, but we can suggest to them, for example, energy-saving
arrangements from the standpoint of a space provider.

Masaki Chono, Senior Engineer, Facility Operations Group, Facility Operations Dept., Engineering & Services Div.

The Uniﬁed Awareness of the Whole Company and Persistent Efforts
Are the Keys to SuccessWith the spread of the Internet and cloud computing, there is an explosive increase in data center
usage in a form that is not readily apparent. The more customers use data centers, the greater theenergy that is consumed, so operators take many initiatives toward energy conservation every day
via persistent efforts such as through effective airﬂow management and optimal operation ofrefrigeration equipment. In addition, we contribute to the environment via efﬁcient use of resources
such as recycling waste materials during facility upgrades. AT TOKYO will continue to aim for highly
environmentally friendly data center operations, while gaining and maintaining customersʼ trust.

Hisashi Ito, Associate Director, Engineering & Services Div.

AT TOKYO will continue to maintain its high awareness of energy conservation and the environment,
aiming to enhance the convenience of its customers from diverse industries,
while constantly striving to be the most highly evaluated data centers for each and every customer.

AT TOKYO Corporation https://www.attokyo.co.jp/
5-6-36 Toyosu, Koto-ku, Tokyo, Japan TEL：03-6372-3500 FAX：03-6372-3009 Mail:at-sales@attokyo.co.jp
All rights reserved. Copyright ©AT TOKYO Corporation.

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