Toshiba’s “H2One™” Starts Operation at Toranomon Hills Business Tower

By June 22, 2020 2   min read  (328 words)

June 22, 2020 |


KAWASAKI, JAPAN―Toshiba Energy Systems & Solutions Corporation (hereinafter “Toshiba ESS”) announced today that its hydrogen-based autonomous energy supply system, “H2One™,” which Toshiba ESS delivered and installed on the rooftop of Toranomon Hills Business Tower (Minato-ku, Tokyo), has started full-scale operation with the opening of commercial facilities. H2One™ is an integrated system that provides stable CO2-free, environmentally-friendly electric power for the tower.

Toshiba BT Fuel Cells at WorkH2One™ consists of a hydrogen generator, a hydrogen storage tank, and hydrogen fuel cells, and batteries. The overall system is controlled by Toshiba’s unique energy management system, “H2EMS™”, which carries out power generation and power storage with associated operation of a 30-kW solar power system and batteries. H2One™ allows for maximum use of the solar power system by converting and storing unstable solar power, which varies depending on the time of day and weather, into hydrogen, and supplies it as electric power on demand.

Toranomon Hills Business Tower is a 36-story office tower with a large office area and commercial facilities. In addition to “H2One™”, the tower has its own power supply system in the third-level basement, which features an environmentally-friendly energy network consisting of in-house power generation systems, such as gas cogeneration systems (CGS) and high efficiency heat generation systems with large-scale heat accumulators and waste heat recovery plants that supplies heat and electric power for the Toranomon Hills area.

Yoshihisa Sanagi, General Manager of the Hydrogen Energy Business Division at Toshiba ESS, said, “Toshiba ESS is proud to support the environmentally-conscious energy network. Toshiba ESS will continue to support zero carbon emissions, a clean and sustainable hydrogen society through our hydrogen-related technologies and solutions.”

H2One™ has lineup including green hydrogen station “H2One™ Station Unit” for fuel cell vehicles, as well as the “H2One™ Multi Station” with a combination unit that provides electricity, hot water to buildings and for electric vehicles.


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