What is DHC?
District heating and cooling (DHC) is a system in which buildings and other facilities within a district are constantly supplied with cold water, hot water, and steam centrally produced by one or more local plants.
The energy is delivered through pipelines and used for purposes such as air heating/cooling and cold/hot water service.
Our Defining Qualities
MM21 DHC is an energy infrastructure company that has supported the Minato Mirai 21 Central District since 1989 with heating and cooling energy produced by high-efficiency DHC systems.
Aiming to “contribute to enhancing urban value through the supply of energy” as called for in our Corporate Philosophy, we are striving to achieve our 2030 Vision, “Contribute to decarbonization and effective BCP for Minato Mirai 21, to become the district’s heating and cooling supplier of choice.”
Japan’s Largest
The energy we supply serves a total floor area of approximately 4.55 million sqm (as of April 2025).
Decarbonization
Minato Mirai 21 is recognized by the Japanese government as a Decarbonization Leading Area, an area that pursues advanced efforts toward carbon neutrality.
MM21 DHC strives to boost the district’s environmental performance through the use of state-of-the-art equipment and other approaches that save energy and money.
We also contribute to the district’s net-zero goal by providing decarbonization-related services that reduce the carbon emissions of heating and cooling.
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Expert heat-source equipment operators are stationed at Center Plant and No. 2 Plant round the clock every day to maintain stable supply of heating and cooling.
Based on a business continuity plan (BCP), MM21 DHC has installed gas engines, kerosene-burning generators, and other backup equipment for maintaining disaster preparedness. This equipment minimizes the risk of interruption of operations due to earthquakes or other disasters, ensuring that supply of heating and cooling can continue.
In addition, we routinely conduct BCP-based training to continually improve our readiness so that operations can be rapidly recovered following a disaster.
