Installation of Green Hydrogen Production and Utilization Facilities at the IINO Building
Enhancing the Value of an Urban High-Rise Mixed-Use Building through the Social Implementation of Carbon-Neutral Technologies and Their Application to a BCP
June 18, 2026
IINO Kaiun Kaisha, Ltd.
Takasago Thermal Engineering Co., Ltd.
IINO Kaiun Kaisha, Ltd. (Head Office: Chiyoda-ku, Tokyo; President and Representative Director: Yusuke Otani; hereinafter "IINO Lines") and Takasago Thermal Engineering Co., Ltd. (Head Office: Shinjuku-ku, Tokyo; President and Representative Director: Kazuhito Kojima; hereinafter "Takasago Thermal Engineering") announce that they have concluded a contract for the design and construction of green hydrogen*1 production and utilization facilities (hereinafter, "the Project") to be introduced at the IINO Building (Chiyoda-ku, Tokyo), which is owned and operated by IINO Lines.
The Project aims to enhance the value of an urban high-rise mixed-use building through the social implementation of carbon-neutral technologies and their application to a Business Continuity Plan (BCP). On the rooftop of the IINO Building, electricity generated by the existing photovoltaic power generation system*2 will be stored in batteries, used to produce green hydrogen using a water electrolysis system, and converted back into electricity by a fuel cell. The electricity generated will be utilized within the building in both normal and emergency situations. In addition, an Energy Management System (EMS) will be introduced to optimally control each facility, enabling efficient energy operation.
IINO Lines will introduce the green hydrogen facilities by utilizing a subsidy provided by the Tokyo Environment Public Service Corporation, Tokyo Metropolitan Center for Climate Change Action (Cool Net Tokyo)*3, under "the Project for Supporting the Practical Implementation of Green Hydrogen Production and Utilization"*4. Takasago Thermal Engineering will be responsible for the design and construction of the full set of green hydrogen facilities.
Going forward, detailed design, equipment manufacturing, and construction will proceed sequentially. The facilities are scheduled to be delivered in early March 2027, with operations planned to commence in mid-March of the same year.
■Project Name
IINO Building Green Hydrogen Facility Installation Project
■Commencement of Facility Operation
March 2027
■System Flow
■About the IINO Building https://www.iino.co.jp/kaiun/english/service/estate/buil_iino.html
Facility Name: IINO Building
Location: 2-1-1 Uchisaiwaicho, Chiyoda-ku, Tokyo
Primary Uses: Office, retail, hall, conference facilities, parking
Site Area: 8,027 m²
Total Floor Area: 103,826.88 m²
Number of Floors: 27 above ground, 5 below ground, and 2 penthouse levels
Structure: Steel frame, partly steel-reinforced concrete
Completion: October 2014
*1 What is green hydrogen
Green hydrogen is hydrogen produced by electrolyzing water using renewable energy such as solar power. It is an environmentally friendly clean energy that does not emit CO2 (carbon dioxide) not only during use but also during production.
*2 May 17, 2022: Commencement of operation of photovoltaic power generation facilities at the IINO Building
https://www.iino.co.jp/kaiun/english/news/files/20220517100719578s.pdf
*3 Tokyo Metropolitan Environment Public Service Corporation, Tokyo Metropolitan Center for Climate Change Action (Cool Net Tokyo)
https://www.tokyo-co2down.jp/ (Only in Japanese)
*4 Tokyo Metropolitan Government Subsidy Program: "Project for Supporting the Practical Implementation of Green Hydrogen Production and Utilization"
https://www.tokyo-co2down.jp/subsidy/green_hydrogen/ (Only in Japanese)
The Program aims to expand the use of green hydrogen that supports the realization of a decarbonized society targeted for 2050, by promoting the introduction of the series of facilities required for the production and utilization of green hydrogen.
Businesses introducing such facilities select a suitable plan from registered model plans and receive subsidies for the expenses required for installation.
This Project corresponds to Takasago Thermal Engineering's "B-2 Package Model Plan."
【About IINO Kaiun Kaisha, Ltd. 】https://www.iino.co.jp/kaiun/english/
Founded in 1899, IINO Kaiun Kaisha, Ltd. operates in the businesses of oceangoing shipping, short sea/domestic shipping, and real estate.
In the shipping business, IINO Lines provides transportation services worldwide and owns and operates a total of 90 vessels. In its real estate business, it owns six office buildings in central Tokyo and two in London, the United Kingdom, and provides high-quality office spaces based on a policy of operation and management either independently or jointly with other companies. In addition, IINO Lines has investments in two real estate projects in the United States.
Under its Medium-Term Management Plan, "Transformation for a Sustainable Future" (plan period: April 2026 to March 2031), IINO Lines has set a target of achieving carbon neutrality by 2050. In its real estate business, IINO Lines has also set a target of reducing total greenhouse gas emissions for Scope 1 (direct emissions) and Scope 2 (energy-related indirect emissions) by 75% compared with fiscal year 2013 levels by fiscal year 2030. IINO Lines will continue to advance initiatives toward the realization of a sustainable society.
【About Takasago Thermal Engineering Co., Ltd.】https://www.tte-net.com/english/index.html
Since its establishment in 1923, Takasago Thermal Engineering Co., Ltd. has primarily engaged in the design and construction of air conditioning systems and provides comprehensive services across the entire building lifecycle. These include the creation of comfortable environments for people, the construction of highly controlled production environments, and consulting on optimal equipment operation and energy conservation using AI.
Under its Group Purpose, "With our revolutionary environmental innovations, we activate the Earth's future. "Takasago Thermal Engineering refers to itself as an "Environmental Creator®" that creates comfortable environments and is engaged in creating technologies and services that contribute to the realization of a decarbonized and sustainable society.
In its "Long-Term Vision," Takasago Thermal Engineering positions new carbon-neutral businesses as growth businesses, leveraging its accumulated expertise in "producing," "storing," and "using" energy, and "connecting" them. Using its proprietary water electrolysis system, "Hydro Creator™" (1-100 Nm³/h, proton exchange membrane type), and EMS as tools, Takasago Thermal Engineering aims to realize a locally produced and consumed energy supply model in society.
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