Climate Change

Policy, Concept, and System

As demand for initiatives toward the realization of a low-carbon society with consent to limit the average temperature rise worldwide to 2℃ in the Paris Agreement, efforts to reduce greenhouse gases (GHG*) are indispensable not only in the real estate industry but also property holdings and business activities.
Moreover, preparing for the effects of climate change is vital because an increase in natural disasters such as wind and flood damage due to climate change has a dramatic impact on society while at the same time having the potential to impact real estate such as lowering the value.
The Tokyo Tatemono Group raises the climate change prevention that leads the community as one aspect in the Group Environmental Policy to work in developing real estate with superior environmental performance, such as energy-saving equipment, while simultaneously advancing the development of real estate resistant to natural disasters such as wind and flood damage.
We are also striving toward energy savings from a building operation perspective by working with building management companies and tenants after building development.

  • *
    GHG is an acronym that stands for Green House Gases. A generic name used for the various greenhouse gases.

Indicators and Results

In the business activities of Tokyo Tatemono, the Office Buildings Business that operates and manages office buildings (commercial) uses the most energy. The ratio of energy use makes up 93.9% of Tokyo Tatemono (calculation based on the Energy Conservation Act*). Therefore, reducing the amount of energy used in the Office Buildings Business largely contributes to the reduction of energy use of Tokyo Tatemono as a whole and the reduction of GHG.
Moreover, in the reduction of energy consumption, we have defined unit load based on floor area as an indicator and set 1% unit reduction every year on average over five years as a target in accordance with the Act on the Rational Use of Energy (unit load basis also applies to GHG emissions).
We actively introduced high-efficiency air-conditioning equipment and LED lighting fixtures in existing office buildings to reduce energy consumption but amount of energy usage and unit load increased due to increase from highly energy consuming commercial facilities and hotels starting operations exceeding the amount of reduction.

●Collection Period
  • April to the following March each year
●Collection Scope
  • Facilities required to provide notification under the Act on the Rational Use of Energy
  • *
    The floor area of buildings for reporting changes each year
●Collection Targets
  • Amount of energy use and unit load
  • Amount of GHG emissions and unit load

Tokyo Tatemono has received third-party assurance by Lloyd's Register Quality Assurance Limited (LRQA) to assure integrity of part of its FY2018 environmental and social data.
The type and numerical data assured are marked with *.
The third-party quality assurance is included in the ESG Data Book.

Item Unit 2014 2015 2016 2017 2018 2019 target
Amount of Energy Use (Crude Oil Equivalent)* kl 19,185 22,822 21,592 22,083* 23,895* -
Unit Load kl/Thousand m² 37.8 36.3 35.4 34.2 35.0 35.4
Ghg Emissions* t-CO2 39,929 45,059 44,629 42,147* 48,428* -
Scope 1* t-CO2 3,493 3,243 2,553 2,402* 3,300* -
Scope 2* t-CO2 36,436 41,816 42,076 39,745* 40,799* -
Scope 3* t-CO2 - - - - 4,329* -
Unit Load
(excluding Scope 3)
t-CO2/
Thousand m²
78.6 71.6 73.1 65.3 64.6 69.9
Floor Area of Scope Thousand m² 508 629 611 645 683 -

Climate Change Initiatives in the Office Buildings Business

The performance of initiatives to reduce greenhouse gas emissions conducted in 2018 at office buildings owned and managed by Tokyo Tatemono is as follows:

  • *
    The performance below is from January to December 2018.

[Energy-saving Equipment Adoption and Renewal Initiatives]

  • Renewal to high-efficiency air conditioning systems: 3
  • Transition to LED lighting in private areas: 16
  • Transition to LED lighting in common areas: 20
  • Introduction of auto-off air-conditioning and lighting functions linked to security: 5

[Initiatives to Improve Operational Methods]

  • Comprehensive management of the air-conditioning temperature in common areas: 26
  • Use of BMS at offices that have introduced BEMS: 6
  • Informational sharing to realize management that leads to maximum design performance: 1
  • Execute energy diagnostics through external institutions: 1
  • Lights-out and thinning of backyard lighting

[Initiatives to Cooperate with Tenants (Existing Buildings)]

  • Distribute informational pamphlets about energy saving
  • Power saving during the winter and summer seasons: 34
  • Energy-saving promotion conference held once a year at offices that are part of the total reduction policy: 4

[Energy Saving at the Head Office]

  • Lights-out during lunch
  • Easing of air-conditioning temperature in summer through the introduction of Cool Biz
  • Introduction of LED lighting
  • Introduction of task ambient lighting
  • Thinning of non-emergency lighting

We are submitting Tokyo Carbon Reduction Reports in accordance with the Tokyo Metropolitan Environmental Security Ordinance from the FY2009 results.

TOPICSLow Energy Consumption Heat Measures

We have installed and begun operation of energy-saving air-conditioning systems and equipment recognized by the programs to promote measures against urban heat islands advocated by the Tokyo Bureau of Environment in July 2018 at Tokyo Square Garden. We are also putting in place low energy consumption heat measures from fine mist generation equipment and heat insulation films on glass eaves to the installation of additional heat reduction materials on benches.

Fine mist decreases the ambient temperature from three to five degrees Celsius without passers by or things nearby getting wet.

Climate Change Initiatives in the Residence Business

Tokyo Tatemono was registered in the ZEH Developer Registration Program in May 2018 to actively work toward ZEH-M (ZEH-Mansion) in the future. We are gradually putting in place initiatives to popularize ZEH-M. We also aim to standardize ZEH based on the ZEH road map announced by the Ministry of Economy, Trade and Industry in 2018.

  • *
    ZEH is an acronym for Net Zero Energy House. A zero energy house has a total energy consumption that reduces energy consumption from measures such a heat insulation and energy savings as well as creates power through power generation to balance out the annual primary energy consumption (air-conditioning/hot water/ventilation) to zero. ZEH-M is the Net Zero Energy Housing standard for multiple-dwelling complexes.

TOPICSBrillia Tsurumaki: The First ZEH-M from Tokyo Tatemono

Brillia Tsurumaki satisfies the ZEH-M Oriented*1criteria by improving thermal insulation performance, such as on exterior walls, adopting high-heat insulation sashes, and adopting highly efficient water heating systems. These innovations have earned Brillia Tsurumaki a designation by Tokyo as the first Highrise ZEH-M (ZEH Mansion) Proof-of-Concept Project*2 under the design guidelines to promote net zero energy housing of multiple-dwelling complexes released by the Ministry of Economy, Trade and Industry in fiscal 2018.

  • *1
    Ideal standards for highrise multiple-dwelling complexes with six or more stories as ZEH released by the Ministry of Economy, Trade and Industry in May 2018.
  • *2
    The official name of this project is the Highrise ZEH-M (ZEH Mansion) Proof-of Concept Business as Part of the 2018 Support Subsidy to Promote Energy Savings (Project to Promote the Adoption of Innovative Energy-saving Technologies in Residences and Buildings) (Net Zerio Energy House Support Program)

Conceptiual drawing of completed Brillia Tsurumaki

Use of Renewable Energy Through Renewable Energy Certificates

The power used in model rooms for Brillia condominiums by Tokyo Tatemono takes advantage of the renewable energy certificate framework and has switched to 100% renewable energy since May 2016. In 2018, we used renewable energy certificates for approximately 830,000 kWh of power.

Energy Creation Business Through Solar Power Generation Plants

Tokyo Real Estate Management makes energy-saving proposals as a building management company from the perspective of building management in addition to engaging in an energy creation business through solar power generation plants together with the start of a fixed price purchasing system for renewable energy. Solar power energy plants are expanding primarily in the Tohoku region. These eight plants have a total generation capacity of 12,382 kW as of December 2018.

Energy Creation Business Through Solar Power Generation Plants

Raising Awareness About the Issue of Climate Change

SMARK Isesaki, Kishiwada CanCan Bayside Mall, ABIKO Shopping Plaza and MALera Gifu held Global Environment Festivals for Parents and Children (sponsored by the New Energy Foundation) to bring awareness to the issue of climate change as four commercial complexes operating in prime locations.
Many people participated in events where parents and children alike had fun while learning about the environment from a three-screen multicast video stage, craft and power generation workshops, introductions to corporate initiatives, a quiz rally and more.

Quiz Rally at SMARK Isesaki

Quiz Rally at SMARK Isesaki

Development of Real Estate Resistant to Wind and Flood Damage

In recent years, large-scale wind and flood damage occurs more often due to factors such as climate change.
The Tokyo Tatemono Group assumes various disasters will strike such as typhoons, floods and earthquakes in the development of buildings and condominiums and adopts designs and equipment as measures against those disasters.
We are conducting the initiatives below at the Tokyo Tatemono Nihonbashi Building completed in February 2015.

  • Adoption of seismic isolation structure (B1 column base seismic isolation)
  • Installation of emergency power generators that can operate for up to 72 hours
  • Installation of tide prevention plates above potential flooding as a measure against flooding in sudden rain and collapse of the Arakawa embankment
  • Setup of a disaster prevention center on the second floor as a core function of buildings
  • Installation of transformers and emergency power generators on building roofs (provides an uninterrupted power supply to allow ongoing operations even in the event flooding in the building)