Policy, Concept, and System
As demand for initiatives toward the realization of a lowcarbon society with consent to limit the average temperature rise worldwide to 2℃ in the Paris Agreement, efforts to reduce greenhouse gases 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 to 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.
Indicators and Results
The Office Buildings Business that operates and manages office (commercial) buildings uses the most energy in the business activities of Tokyo Tatemono, and the ratio of energy use makes up 97.0% of the energy used by Tokyo Tatemono (calculated based on the Act on the Rational Use of Energy). 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 greenhouse gas emissions.
We have defined unit consumption based on floor area as an indicator for the reduction of energy use 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.
In FY2016, we reduced the amount of energy we used as well as our CO2 emissions in addition to lowering our unit consumption of energy use by introducing LED lighting together with renovations of large-scale commercial facilities as well as selling office buildings with low energy efficiency.
The unit load of CO2 emissions increased due to a dramatic rise in the emission factors of some power companies, but we check the CO2 emissions factors of power companies at all Tokyo Tatemono properties to conduct reviews, such as whether to switch to power companies with a low CO2 emission factor as necessary.
- ●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.
- Facilities required to provide notification under the Act on
- ●Collection Targets
- Amount of energy use and unit consumption
- Amount of CO2 emissions and unit rate
Trends of Floor Area for Reporting (Standard Unit Load)
- *The unit load is calculated by adding the occupation rate to the floor area of the building for reporting.
The floor area of the building for reporting changes each year.
Trends in the Amount of Energy Use
Trends in CO2 Emissions
Climate Change Initiatives in the Office Buildings Business
At office buildings owned and managed by Tokyo Tatemono, we are working to reduce greenhouse gas emissions by promoting the initiatives below.
The Empire Building completed in September 2017 adopted a variety of environmental and energy-saving equipment, such as BEMS LED lighting and natural ventilation systems and succeeded in a more than 16% (AA) PAL* reduction rate, a more than 29% (AAA) in ERR, and an A-Rank in CASBEE® (self-assessment).
[Equipment Adoption and Renewal Initiatives (New/Existing Buildings)]
- Renewal to high-efficiency air conditioning systems (2017: 9 existing Buildings)
- Transition to LED lighting in private areas (2017: 1 new building/12 existing buildings)
- Transition to LED lighting in common areas (2017: 2 new buildings/16 existing buildings)
- Introduction of auto-off air-conditioning and lighting functions linked to security (2017: 2 existing buildings)
[Initiatives to Improve Operational Methods (Existing Buildings)]
- Comprehensive management of the air-conditioning temperature in common areas (2017: 23 existing buildings)
- Use of BMS at offices that have introduced BEMS (2017: 7 existing buildings)
- Informational sharing to realize management that leads to maximum design performance (2017: 7 existing buildings)
- Execute energy diagnostics through external institutions (2017: 3 existing buildings)
- Lights-out and thinning of backyard lighting
[Initiatives to Cooperate with Tenants (Existing Buildings)]
- Power saving during the winter and summer seasons (2017: 33 common areas/25 private areas)
- Energy-saving promotion conference held once a year at offices that are part of the total reduction policy (2017: 5 existing buildings)
[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.
Climate Change Initiatives in the Residence Business
In Brillia, we are introducing various equipment related to energy savings in order for customers living to comfortably save energy. The Brillia brand equips condominiums with measures that include equipment able to realize energy savings in the backdrop of daily life from LED lighting and windowpanes with high heat insulation to faucets that conserve hot water and toilets that conserve water.
We also introduced a Home Energy Management System (HEMS) that visualizes the status of power use to support customers in their own primary energy saving efforts.
At Brillia Oyama Park Front, the adoption of ENE-FARM in first-floor units generate power with city gas to use exhaust heat as a hot water supply when generating energy. This effort has realized a high-level of efficiency in primary energy use of 85.8%*1 (approximately 37%*2 at large-scale power generation plants).
- *1Calculated based on the Higher Heating Value (HHV)
- *2Source: Act on the Rational Use of Energy
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 2017, we used renewable energy certificates for approximately 620,000 kWh of power.
Energy Creation Business Through Solar Power Generation Plants
At Tokyo Real Estate Management, which conducts building management, we make energy-saving proposals from the perspective of building management and engage 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 2017.
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)
Raising Awareness About the Issue of Climate Change
2017 was a turning point as the 20th anniversary since the Kyoto Protocol was enacted as numerical targets for the reduction of greenhouse gas emissions. Therefore, to further interest in the issue of climate change, we worked together with the event and international committee held in Kyoto in December 2017 and provided the SMARK commercial facility owned by Tokyo Tatemono as an event space for the Global Environment Festival held by the new energy festival.
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.