With the cooperation of tenants, exhibitors and customers, electricity conservation measures were taken in the operations areas centered on the summer season (from July to late September 2011 under the management of TEPCO, and from July to early September 2011 under the management of Tohoku-Electric Power) in response to the power shortage due to the impact of the Great East Japan Earthquake.
Efforts and their Effects in Office Buildings
Energy conservation efforts were made by reducing lighting and raising awareness through distributing “electricity conservation pamphlets” to tenants in the 84 office buildings (more than 500kW of contracted power) managed by Mitsui Fudosan under the management of TEPCO. As a result, the peak value of the power consumption was reduced approximately 21% on average compared to last year.
Efforts and their Effects in Retail Properties
In the 21 retail properties under the management of Tohoku-Electric Power and TEPCO, lighting in the common-use and proprietary areas was reduced and parts of the ventilation and transportation equipment were shut down. As a result, compared to last year the power consumption was reduced approximately 27% and CO2 emissions were reduced by 22%.
With a few exceptions, these efforts will continue to be made.
“Power-Saving Cooperation Thanks Plan” of Mitsui Garden Hotels
The “Power-Saving Cooperation Thanks Plan” was held from July to September 2011 at the Mitsui Garden Hotels’ nine facilities under the management of Tohoku-Electric Power and TEPCO. This plan gives discount rates for those who lodge at times that avoid power demand peak hours (from 9:00 to 20:00 on weekdays), and it had the effect of saving power during the power demand peak hours.
In addition, various electricity conservation measures, such as reducing illumination and lighting time of lamps in common-use areas and backspaces and shortening air conditioning hours, are continuing to be taken in all 16 facilities.
Efforts and their Effects in “Tokyo Midtown”
consumption by utilizing
the in-house display
Electricity conservation measures were taken at "Tokyo Midtown" (Minato-ku, Tokyo) in April 2011. Implementations such as reduction of lighting illumination and reduction of air conditioning in common-use areas, LED lighting in parking lots, extending the cogeneration system operating hours, and shutting down water features. In addition, we received feedback regarding matters such as lessening air conditioning and illumination changes in exclusive-use areas through the understanding and cooperation of each tenant. Also, creative efforts were made to aid customer understanding by visualizing the maximum power consumption by utilizing the in-house display facilities. Through these energy conservation measures, the peak value of the power consumption was reduced by a maximum of 34% (15% reduction target) compared to last year. Further, in 2011 the annual power consumption was reduced by 19.6% and the annual CO2 emissions were reduced by 13.0% compared to the previous year.
Giving consideration to the convenience and comfort of customers, with a few exceptions, these efforts are continuing to be made even after October 2011.
“Gran Tokyo North Tower”
Following the certification of five offices by the “Superior Specific Global Warming Countermeasures for Offices” of the Tokyo Metropolitan Ordinance on Environmental Preservation in May 2011, the “Gran Tokyo North Tower” (Chiyoda-ku, Tokyo) was certified as a top-level office and the “Gate City Osaki” (Shinagawa-ku, Tokyo) and the “Akasaka Biz Tower” (Minato-ku, Tokyo) were certified as a second-highest-level offices in February 2012.
Number of establishments in Tokyo Certified by the Superior Specific Global Warming Countermeasures for Offices (as of the end of fiscal 2011)
- Top-level offices: 4
- Second-highest-level offices: 4
Publication of “Guidelines for CO2 Reducing Managerial Improvements”
The “Guidelines for CO2 Reducing Managerial Improvements,” which applies to office buildings nationwide managed by Mitsui Fudosan, was published at the end of March 2012. These guidelines are a summary of management improvement efforts that should be taken according to each building characteristic, such as unifying the effort standards and clarifying goals, without sacrificing the convenience or comfort of the building users, with the purpose of promoting further CO2 emission reduction, and based on the proprietary know-how our company has accumulated to date. Three levels of basic efforts, recommended efforts and common efforts have been set for the items for managerial improvement (total of 103) and categories of building characteristics (total of 5).
Management of the guidelines begins in April 2012.
Topics of Managerial Improvement of the Guidelines
|I. Maintenance of Promotion System
|II. Managerial topics that can be improved by managerial side
|III. Items requiring tenant cooperation
Revision of the “Environmental Measures Execution Tool”
The “Environmental Measures Execution Tool,” an introduction and examination support tool for CO2 reduction measures of new office buildings, was revised in January 2012. Because three years have passed since the formulation, the determination standards of environmental measures were reexamined and new items were added from the perspective of changes in technology trends and costs, the company'sperformance results, alignment with issues other than the environment, and verification of alignment with Tokyo's“Superior Specific Global Warming Countermeasures for Offices” standards.
Review Details of the Environmental Measures Execution Tool
1.Reviewing determination standards
- “Standard examination instruction items” ⇒ “Required introductory items” 8 items
- “Standard examination instruction items” ⇒ “Optional examination instruction items” 2 items
- “Optional examination instruction items” ⇒ “Standard examination instruction items” 8 items
2.New additional items
Obtaining of CASBEE Certification
Completion image of
Kashiwanoha Campus City
Project in 148 Station Blocks
In May 2011, the “(Temporary name) Kashiwanoha Campus City Project in 148 Station Blocks” (Kashiwa-shi, Chiba planned for completion in 2014) acquired S rank certification, the highest rank in CASBEE Kashiwa. It received high assessments for energy and outdoor environment (within the premises).
“LaLa Garden Tsukuba”
In November 2011, at the "LaLa Garden Tsukuba" in (Tsukuba-shi, Tsukuba) and in January 2012 at "Alpark" (Hiroshima-shi, Nishi-ku), a local survey was taken by the government based on the energy conservation law. This local survey is intended to ensure sufficient rationalization of energy consumption required by the Energy Conservation Law, and confirmation of the status of energy management and test results for all facilities, hearing on energy management systems, and operational status confirmations were performed.
As a result, high ratings of 100/100 points for “LaLa Garden Tsukuba” and 99/100 points for “Alpark” were acquired.
Energy Conservation Specifications of “Hamarikyu Mitsui Building”
At the “Hamarikyu Mitsui Building” (Chuo-ku, Tokyo), in addition to locating the building at an angle with a low impact from solar radiation, the air-conditioning load of the building is being reduced by reducing window area by the exterior design and incorporating Low-E pair glass and blinds that have high heat insulation and thermal insulation properties. In addition, energy conserving lighting and air-conditioning systems are being introduced, such as illumination controlling systems and light emitting diode (LED) lighting in all common-use areas, outside air cooling systems and fans and pump inverter controllers.
Energy-saving specifications, etc. of “Hamarikyu Mitsui Building”
Energy Conservation Specification for “Hiroshima Tran Veil Building”
“Hiroshima Tran Veil Building”
At “Hiroshima Tran Veil Building” in (Naka-ku, Hiroshima City), in addition to reducing the heat load by incorporating Low-E pair glass (except the north side) and sunshade louvers, LED lighting and motion sensor lights of the common-use office areas, and light number switching type illumination and high-efficiency lighting equipment of office exclusive-use areas are being utilized.
LED Promotion in Retail Facilities
Switching to LED lighting in the common-use areas of retail facilities is being furthered. In fiscal 2011, a total of 20,554 lights in 15 facilities were switched to LED. As a result, the annual power consumption is looking to be reduced by 6,515 thousand kWh and CO2 emissions are looking to be reduced by 4,600t (company calculations).
Additionally, because of the LED promotion until now, 75% of the switching for the down-lights of common-use areas has been completed.
Also, at the “Mitsui Outlet Park Kurashiki” (Kurashiki-shi, Okayama), which opened in December 2011, LED lighting is basically incorporated for illumination of common-use areas.
Utilization of Solar Power Generators
At “Diver City Tokyo Plaza” (Koto-ku, Tokyo), the world'sfirst (according to the manufacturer) digital signage *1 through a solar power generator has been introduced.
At “Tokyo Midtown,” five mobile solar power generators were introduced supplying part of the power used for events held on the premises. In fiscal 2011, they were used for “Midtown Rainbow 2011,” “Hakushu Midpark Café” and “Midtown Christmas 2011.”
*1 Digital Signage: An advertising medium that digitally displays images and information.
by solar power generatorat
Diver City Tokyo Plaza”
Large-Scale Solar Power Generation Facilities of “Mitsui Outlet Park Kisarazu”
Solar power generation facility of
600kW installed on the roof
At “Mitsui Outlet Park Kisarazu” (Kisarazu-shi, Chiba), eastern Japan'slargest shopping center solar power generation facility of approximately 600kW has been installed on the roof of the west side building. As a result, the common-use area is expected to afford 50% of the annual power consumption. Additionally, 164 gas heat pumps were introduced in the air conditioning facility, and of these 140 are power generator carrying types. As a result, contributions to power consumption reduction and power usage load peak cuts are expected.
Wind Power Generation of “Mitsui Outlet Park Kurashiki”
attached with wind
At “Mitsui Outlet Park Kurashiki,” three small-scale solar power generators attached with wind power generators (72W/day) are installed in the green spaces adjacent to the “Kurashiki Mirai Park.” The generated power is used for the lights installed on the wind power generators.
From “using” to “making”
Regional Development Department
Regarding the development of “Mitsui Outlet Park Kisarazu,” not only are energy conservation measures being taken, full-fledged measures are also being developed to “create energy.” In eastern Japan'sretail facilities the largest-scale 600kW solar power generation facilities were installed. Not only is energy “used,” but efforts are also being made to “create.” We have received high interest and ratings from many customers regarding the energy measures of the facility, which generates 600,000kWh of power annually.
The introduction of “reserve energy” facilities such as the water thermal storage and ice thermal storage systems, which accumulate heat using nighttime power, which has a low power load, and using that heat during the daytime, is being promoted for large-scale office buildings and retail properties.
“LaLaport Kashiwanoha” (Kashiwa-shi, Chiba) has an ice thermal storage air conditioning facility installed with a total heat storage capacity of 21,100kWh. Additionally, it is planned to introduce a water thermal storage system (total heat storage capacity of 22,700kWh) at the “(temporary name) Iidabashi Station West Exit Project,” which is planned for completion in June 2014.
Installation of Charging Stations for Electric Vehicles
Diver City Tokyo Plaza
At retail facilities, the installation of electronic automobile charging stations is being furthered. Five are installed at “Mitsui Outlet Park Kurashiki,” three at “Mitsui Outlet Park Kisarazu,” and two at “Diver City Tokyo Plaza.”
Additionally, two electronic automobile charging stations are installed at the “Yokohama Mitsui Building” (Yokohama-shi, Nishi-ku) office building.