Climate Change Strategies

Estimate of Mitsubishi Estate Group GHG Emissions

FY 2018 FY 2017(Base Year)
Amount of Emissions
(t-CO2)
Percentage of Total GHG
Emissions
Scope 3
Breakdown
Compared to FY 2017
(Base Year)
Amount of Emissions
(t-CO2)
Percentage of Total GHG
Emissions
Scope 3
Breakdown
Total GHG Emissions
(Scope 1+Scope 2+Scope 3)
3,588,345 100.0% - 7.5% 3,336,472 100.0% -
Scope 1 108,289 3.2% - -10.2% 120,634 3.6% -
Scope 2 564,033 16.9% - -2.0% 575,262 17.2% -
Scope 3 2,916,023 87.4% 100.0% 10.4% 2,640,576 79.1% 100.0%
 - Category 11 1,714,888 51.4% 58.8% 22.7% 1,398,021 41.9% 52.9%
 - Category 2 975,004 29.2% 33.4% -1.5% 990,329 29.7% 37.5%
 - Category 1 77,035 2.3% 2.6% 3.6% 74,329 2.2% 2.8%
 - Other 149,095 4.5% 5.1% -42.9% 177,897 5.3% 6.7%

Reducing CO2 Emissions and Energy Use through Building Management

Severe downpours and abnormally high temperatures mainly caused by climate change have led to increasingly severe personal and material damage every year, which is having a serious effect on everyday life.
In order for the Mitsubishi Estate Group to achieve its Basic Mission the Group realizes the need to prioritize environmental issues above its other CSR themes and thus it is undertaking concrete environmental initiatives.
To save more energy, the Group is not only showing consideration in equipment choices by adopting high-efficiency devices in its core business of office building management but it also recognizes that ambient temperatures and the operating conditions of a building also have an effect so it is working together with tenants in efforts to reduce greenhouse gasses.
Energy consumption per unit of floor space has been on the decline since the 2011 Great East Japan Earthquake as a result of repairs to facilities to raise energy conservation performance (such as replacing lights with LED lighting) and other energy-saving activities.
We will continue to strive to streamline energy use in buildings overall in fiscal 2019.

*The number of buildings included in scope of data may differ by fiscal year due to renovations and sales/purchases.

CO2 emissions and CO2 emissions per unit of floor space from Mitsubishi Estate's ISO14001-certified buildings

Graph:CO2 emissions and CO2 emissions per unit of floor space from Mitsubishi Estate's ISO14001-certified buildings

(Note) CO2 emissions are calculated using the emissions coefficients determined for individual electrical power suppliers.
The data for 1990 includes buildings prior to renovations (such as the former Marunouchi Building).

Energy consumption and energy consumption per unit of floor space in Mitsubishi Estate's ISO14001-certified buildings

Graph:Energy consumption and energy consumption per unit of floor space in Mitsubishi Estate's ISO14001-certified buildings

(Note) The number of ISO-certified buildings changes each fiscal year due to renovations and sales/purchases.

Mitsubishi Estate Group's Environmental Data

Energy use and CO2 emissions reported under Japan's Energy Conservation Law (fiscal 2017)

Overall Office buildings Commercial facilities Hotels Other
Energy use (1,000 kl a year) 272 205 44 14 8
Unit consumption (kl/m² a year) 0.034 0.037 0.045 0.065 0.008
CO2 emissions (1,000 t-CO2 a year) 529 399 86 22 22
Unit emissions (t/m² a year) 0.067 0.071 0.087 0.104 0.019
Number of target facilities (buildings) 114 66 20 8 20
Floor area (1,000 m²) 7,928 5,617 982 215 1.114

(Note) Compiled for Mitsubishi Estate Group main buildings for which information on energy-saving measures is reported in compliance with the Energy Conservation Law (excluding buildings with a floor area less than 1,000 m²)
This table is prepared on the basis of the information submitted by Group companies in compliance with the Energy Conservation Law, with some additions, and may differ from the actual figures submitted.

Volume of waste generation reported under Japan's Energy Conservation Law (fiscal 2017)

Overall Office buildings Commercial facilities Hotels Other
Waste generated (t a year) 45 24 15 2 4
Per unit (t/m² a year) 0.008 0.006 0.017 0.008 0.008
Number of target facilities (buildings) 65 33 18 8 6
Floor area (1,000 m²) 5,302 3,725 901 215 461

(Note) Compiled for Mitsubishi Estate Group main buildings (excluding buildings with a floor area less than 1,000 m²)

Volume of water usage reported under Japan's Energy Conservation Law (fiscal 2017)

Overall Office buildings Commercial facilities Hotels Other
Water Usage (1000 m³ a year) 5,648 3,151 1,329 1,046 122
Unit consumption (t/m² a year) 0.954 0.725 1.475 4.859 0.265
Number of target facilities (buildings) 72 40 18 8 6
Floor area (1,000 m²) 5,923 4,346 901 215 461

(Note) Compiled for Mitsubishi Estate Group main buildings (excluding buildings with a floor area less than 1,000 m²)

Energy use and CO2 emissions reported under Japan's Energy Conservation Law (fiscal 2016)

Overall Office buildings Commercial facilities Hotels Other
Energy use (1,000 kl a year) 262 201 43 11 7
Unit consumption (kl/m² a year) 0.034 0.036 0.048 0.050 0.008
CO2 emissions (1,000 t-CO2 a year) 505 384 85 21 15
Unit emissions (t/m² a year) 0.066 0.069 0.095 0.096 0.016
Number of target facilities (buildings) 108 64 18 8 18
Floor area (1,000 m²) 7,652 5,590 899 220 944

(Note) Compiled for Mitsubishi Estate Group main buildings for which information on energy-saving measures is reported in compliance with the Energy Conservation Law (excluding buildings with a floor area less than 1,000 m²)
This table is prepared on the basis of the information submitted by Group companies in compliance with the Energy Conservation Law, with some additions, and may differ from the actual figures submitted.

Volume of waste generation reported under Japan's Energy Conservation Law (fiscal 2016)

Overall Office buildings Commercial facilities Hotels Other
Waste generated (t a year) 48 27 16 2 4
Per unit (t/m² a year) 0.010 0.008 0.017 0.008 0.012
Number of target facilities (buildings) 61 31 18 8 4
Floor area (1,000 m²) 4,900 3,491 899 220 290

(Note) Compiled for Mitsubishi Estate Group main buildings (excluding buildings with a floor area less than 1,000 m²)

Volume of water usage reported under Japan's Energy Conservation Law (fiscal 2016)

Overall Office buildings Commercial facilities Hotels Other
Water Usage (1000 m³ a year) 5,222 3,072 1,419 656 115
Unit consumption (t/m² a year) 0.924 0.724 1.579 2.800 0.396
Number of target facilities (buildings) 69 39 18 8 4
Floor area (1,000 m²) 5,650 4,241 899 220 -

(Note) Compiled for Mitsubishi Estate Group main buildings (excluding buildings with a floor area less than 1,000 m²)

Energy use and CO2 emissions reported under Japan's Energy Conservation Law (fiscal 2015)

Overall Office buildings Commercial facilities Hotels Other
Energy use (1,000 kl a year) 252 192 42 15 4
Unit consumption (kl/m² a year) 0.035 0.036 0.046 0.066 0.006
CO2 emissions (1,000 t-CO2 a year) 478 358 84 27 9
Unit emissions (t/m² a year) 0.067 0.067 0.094 0.122 0.013
Number of target facilities (buildings) 106 63 18 8 17
Floor area (1,000 m²) 7,100 5,317 899 220 664

(Note) Compiled for Mitsubishi Estate Group main buildings for which information on energy-saving measures is reported in compliance with the Energy Conservation Law (excluding buildings with a floor area less than 1,000 m²)
This table is prepared on the basis of the information submitted by Group companies in compliance with the Energy Conservation Law, with some additions, and may differ from the actual figures submitted.

Volume of waste generation reported under Japan's Energy Conservation Law (fiscal 2015)

Overall Office buildings Commercial facilities Hotels Other
Waste generated (t a year) 43 26 15 1 -
Per unit (t/m² a year) 0.009 0.008 0.017 0.017 -
Number of target facilities (buildings) 55 30 18 7 -
Floor area (1,000 m²) 4,531 3,491 899 141 -

(Note) Compiled for Mitsubishi Estate Group main buildings (excluding buildings with a floor area less than 1,000 m²)

Volume of water usage reported under Japan's Energy Conservation Law (fiscal 2015)

Overall Office buildings Commercial facilities Hotels Other
Water Usage (1000 m³ a year) 5,215 3,172 1,392 651 -
Unit consumption (t/m² a year) 1.047 0.821 1.549 2.957 -
Number of target facilities (buildings) 67 41 18 8 -
Floor area (1,000 m²) 4,531 3,491 899 141 -

(Note) Compiled for Mitsubishi Estate Group main buildings (excluding buildings with a floor area less than 1,000 m²)

Energy use/CO2 emissions

About 272,000 kl/About 529,000 t a year

Obtaining Low-Carbon Building Certification

From fiscal 2017, Mitsubishi Jisho Residence began to offer certified “low-carbon buildings”* under its “The Parkhouse” brand of condominiums. The Parkhouse Futakotamagawa Midori no Mori in Setagaya-ku, Tokyo, and The Parkhouse OIKOS Mikunigaoka in Sakai, Osaka received certification, and the initiative is expanding. All Futakotamagawa Midori no Mori buildings are fitted with a central airconditioning system known as Condominium Aerotech which maintains a comfortable temperature throughout the building while OIKOS Mikunigaoka has installed ENE-FARM type S residential fuel cells. The adoption of these and multiple other cutting-edge environmental technologies are part of the company's efforts to make a low-carbon society a reality.

* A system of certifications based on Japan's Law on the Promotion of Low-Carbon Cities given by government authorities to buildings in their jurisdiction which take extensive measures to reduce their carbon footprint.

Image:The Parkhouse Futakotamagawa Midori no Mori / Photo of exterior

The Parkhouse Futakotamagawa Midori no Mori / Photo of exterior

Photo:The Parkhouse OIKOS Mikunigaoka / CG image of expected exterior when complete

The Parkhouse OIKOS Mikunigaoka / CG image of expected exterior when complete

WIZE-H: The Zero Energy Residence with Full Central Air Conditioning

Following the launch of its WIZE-H zero energy homes with full central air conditioning systems in January 2016, Mitsubishi Estate Home began sales of its WIZE-U urban three-story zero energy homes in April of the same year.
It also opened a WIZE-H model house at the Asahi Shimbun General Housing Showroom, Housing Plaza Seta that July.
In response to the Japanese government's policy of making all new homes “Net Zero Energy Houses” (ZEH)* as a standard by 2020, Mitsubishi Estate Home included Aerotech central air conditioning, Home Energy Management Systems (HEMS) - the core system of ZEH - and 2.0 kW solar power generation systems as standard features. WIZE-H and WIZE-U are considered ZEH because they feature solar energy generation panels based on existing standard specifications as well as ENE-FARM residential fuel cells and resin window frames with high insulating capacities.
The company intends to keep working hard to popularize ZEH, prevent global warming and help build a low-carbon society.

* Houses that achieve both near-zero net energy consumption per year and a comfortable indoor environment at the same time.

Setagaya-ku, Tokyo: Seta Home Gallery/Opened July 2016

Setagaya-ku, Tokyo: Seta Home Gallery/Opened July 2016

Exhibition of Zero Energy Homes at Hiranumabashi Home Gallery No. 2

Mitsubishi Estate Home has set the popularization of the Net Zero Energy Houses (ZEH) promoted by the Ministry of Economy, Trade and Industry as one of its business objectives. In January 2018 it exhibited a comfortable ZEH featuring an Aerotech central air conditioning system at the renovated Hiranumabashi Home Gallery No. 2.
Modeled after a two-family home, the house supports two different kinds of lifestyles. The younger generation's household lives on the second floor. It is a planned and designed "Smart Order" made-to-order home with central air conditioning that showcases interior decoration and household items that offer a dual-income, child-raising family a stress-free living experience. The older generation home on the first floor shows the kind of elegant daily life available in a "One Order" made-to-order home designed to one's specifications. The house is laid out so it allows both households to stay connected while also spending their time without feeling constrained by each other.

Photo:Hiranumabashi Home Gallery No. 2

Hiranumabashi Home Gallery No. 2

Balancing Productivity and Energy Conservation in the Otemon Tower-JX Building

Some floors in the Otemon Tower-JX Building managed by Mitsubishi Jisho Sekkei were designated as trial next-generation office floors where environmental measurements, surveys and energy consumption analyses were performed in collaboration with academic institutions. Features like radiant air conditioning, office desks with individual heating and cooling units and task lighting with dimming functions were installed based on the data obtained. This provides a work environment that improves productivity in a healthy way. Moreover, the whole building consumes 50% less energy than general standard values, representing huge savings in energy.

Photo: Otemon Tower-JX Building

Otemon Tower-JX Building

Collaborating with Tenants to Conserve Energy

Approximately 80% of the energy used in buildings managed by Mitsubishi Estate is used for electricity, the majority of which is used by tenants. To counter this, in 2008 the company began organizing regular Global Warming Prevention Councils with the tenants as members in each ISO14001-certified building in the Tokyo area so that the company could engage in energy-saving activities together with the tenants.
Every year, Councils are convened for an explanation of CO2 emission reduction and energy-saving initiatives based on the Tokyo Metropolitan Environmental Security Ordinance and the Energy Saving Act and an update on their progress. Mitsubishi Estate will continue these initiatives, providing explanations of concrete reduction targets and energy-saving activities under way in the buildings and introducing tenants to energy-saving methods.

Fiscal 2017 energy consumption by use
(for 24 ISO14001-certified buildings)

Graph:Fiscal 2017 energy consumption by use

Fiscal 2017 energy consumption by application
(for 24 ISO14001-certified buildings)

Graph:Fiscal 2017 energy consumption by application

Marunouchi Heat Supply Completes Otemachi Park Building Sub Plant

Since Marunouchi Heat Supply began supplying heat in 1976, it has continuously adjusted its energy networks to match the evolution of the greater Marunouchi district. The steam and cold water generated by its district heating and cooling plants are supplied to groups of buildings through underground tunnels and used by almost all buildings in the greater Marunouchi region for their air conditioning.
In January 2017, the company's 21st regional plant was constructed inside the Otemachi Park Building. Its cold water pipes are connected to the Otemachi District main plant, joining three other plants already connected to form a cold water network of five sub plants. This makes it possible to provide cold water created from a highly efficient process to nearby buildings. Using energy across an entire region strengthens the energy system of the Otemachi district as a whole and increases the spiral up effect that raises the energy efficiency of the entire area.
Furthermore, if power supplies are interrupted by an accident or a disaster, under certain conditions the plant can receive power from the emergency generators in the Otemachi Park Building and the Otemon Tower-JX Building and supply cold water to those two buildings. Building a system capable of improving disaster response capabilities will allow it to supply heat even during emergencies.
Moreover, by using intercooler waste heat and recycled water waste heat from the gas cogeneration system as the heat pump's heat supply water, the plant is able to improve its heat generation efficiency and make use of unused energy, reducing its environmental impact.

Photo:Otemachi Park Building (forefront) Otemon Tower-JX Building (rear)

Otemachi Park Building (forefront)
Otemon Tower-JX Building (rear)

Four Premium Outlets Switch to Renewable Energy

The four Premium Outlets operated by Mitsubishi Estate-Simon (in Gotemba in Shizuoka Prefecture, Sano in Tochigi Prefecture, Ami in Ibaraki Prefecture and Shisui in Chiba Prefecture) switched to renewable energy using Renewable Energy Certificates for some of their energy consumption, starting in April 2016.
As a result, 8 million kWh, equivalent to 20% of the 40 million kWh in annual electricity consumption at the four complexes, is now covered by renewable energy. This is the largest such initiative for commercial facilities in Japan.
In addition, Mitsubishi Estate-Simon has introduced a carport-type solar power generator for captive consumption that produces an estimated 1.15 million kWh in power annually at its Ami Premium Outlet. This was followed by the installation of the same kind of facility at the Shisui Premium Outlet in December 2017 which is expected to generate approximately 1 million kWh per year. The company will continue to focus on building energy-saving facilities to contribute to reductions in environmental impact.

Photo:Ami Premium Outlet's carport-type solar power 
generator for captive consumption

Ami Premium Outlet's carport-type solar power
generator for captive consumption

Solar power output

About 8,497 kW/17 sites

Installing EV and PHV Chargers at Mitsubishi Estate Group Facilities

In August 2015, Mitsubishi Estate and NEC installed conventional chargers for electric vehicles (EV) and plug-in hybrid vehicles (PHV) developed by NEC and launched a paid charging service at car parks run by Marunouchi Park-In in the Marunouchi area. This was followed by the installation of a total of 437 devices at ten Mitsubishi Estate Group-owned facilities such as the Yokohama Landmark Tower and Sunshine City. EV and PHV are projected to make up 15-20% of all new cars sold by 2020. To match this expected rise in popularity, the Mitsubishi Estate Group installed EV and PHV chargers at its facilities across Japan.
Moreover, by using wind-generated natural energy in this charging service, the company manages to keep the carbon dioxide emitted by EV and PHV down to zero not only when they are running but when they are charging as well. Initiatives like these will help create a low-carbon society both now and in the future.

Photo:Wall-mounted conventional charger

Wall-mounted conventional charger

Image:Carbon-free charging using natural energy

Carbon-free charging using natural energy

Using Natural Energy

In fiscal 2002, Mitsubishi Estate commissioned Japan Natural Energy Company to provide it with renewable energy. From April 2017, it also commissioned 1.14 million kWh of natural energy per year from the same company. Furthermore, Mitsubishi Estate has been a Y-Green Partner since April 2007, helping to popularize natural energy through its cooperation with Yokohama's wind power generating project.

Photo:The Yokohama wind power generating facility

The Yokohama wind power generating facility

Publishing the Tokyo Metropolitan Environmental Security Ordinance Report on Measures against Global Warming

Please click below to view Mitsubishi Estate's Report on Measures against Global Warming.

The Environmental Bureau of the Tokyo Metropolitan Government Public Report Data (link) (Japanese only)

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