District Heating and Cooling
Various Benefits
District heating and cooling differs from conventional air conditioning in that it does not require chimneys, cooling towers, or heat source equipment for each building.
In addition, advanced centralized system management brings a variety of benefits.
Social Benefits
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Improvement of Urban Landscape
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Prevention of Air Pollution and Environmental Hazards
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Prevention of Urban Disasters
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Contribution to Power Load Flattening
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Reduction of Greenhouse Gas Emissions
Benefits for Customers
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Effective Use of Building Space
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Reduction in Equipment Management Effort
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Lower Equipment Costs
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Reduction in Contracted Power Capacity
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Stable Energy Supply
Benefits for Operators
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Reduction in Equipment Capacity
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Improvement in Energy Efficiency
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Various Financing and Subsidy Programs
Business Overview
Features of Our Business
Heat Medium
Transport Pipes
Supply Destinations / Supply Area
Start of Business
Design and Supervision
Construction
Major Equipment Manufacturers
Cold Water / Supply Temperature: 6.5°C → Return 12.5°C
Hot Water / Supply Temperature: 45.0°C → Return 40.0°C
Steam / Supply Pressure: 0.78 MPa
Piping Method / 4-pipe System (some sections use a 6-pipe system)
Total Length: 806 meters
NTT East Headquarters Building: 86,000 m²
Tokyo Opera City Building: 242,000 m²
New National Theatre: 69,000 m²
Total Area: 397,000 m²
July 1995
Japan Environmental Technology Co., Ltd.
Tokyo Opera City Heating Supply Facility Construction Joint Venture
Shinryo Refrigeration and Heating Engineering Co., Ltd.
JFE Engineering Corporation
Takasago Thermal Engineering Co., Ltd.
Hibiya Engineering Co., Ltd.
Taikisha Ltd.
Major Equipment Manufacturers:
Hitachi, Ltd.
Ebara Corporation
Hirakawa Corporation
Ebara Refrigeration Systems Co., Ltd.
Mitsubishi Electric Corporation
Mitsubishi Heavy Industries Air-Conditioning & Refrigeration Corporation
In district heating and cooling, we incorporate additional unique considerations beyond the typical benefits. While supporting the safety, cleanliness, and comfort of the area, we have also taken into account the various cultural facilities that form the heart of the district, installing soundproofing and vibration control equipment. This ensures a district heating and cooling system that is well-suited to the needs of this area.
Environmental Initiatives
Policy and Initiatives
■ Environmental Policy
We continuously provide clean, comfortable, and highly reliable heating and cooling 24/7 to the "Hatsudai Yodobashi Area," contributing to the development of the local community and the preservation of the global environment.
■ Our Initiatives
To achieve the goals set in our global warming countermeasure plan, we strive for high energy efficiency by upgrading to high-efficiency equipment and utilizing operation support systems. Through these efforts, we aim to promote energy conservation and reduce greenhouse gas emissions.
Furthermore, since April 2025, we have started introducing renewable energy (electricity) partially by utilizing non-fossil certificates, further advancing greenhouse gas reduction efforts.