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Tokyo Metropolitan Government Releases Long-term Energy Vision and Geothermal Potential Map

Tokyo Metropolitan Government Releases Long-term Energy Vision and Geothermal Potential Map

In March 2016, The Tokyo Metropolitan Government’s Long-term Vision was announced the goals and specific policies to achieve the future of Tokyo.  In the Long-term Vision, it states that it will cut its energy consumption 20% by 2020 and 30% by 2030 (compared to the baseline year of 2000), and that it will expand its share of energy usage from renewable energies to about 20% by 2024. In order to achieve these targets, it set forth items such as adopting solar power and adopting fuel-cell vehicles.

What is more in March 2016 the Tokyo Metropolitan Government announced the Tokyo Geothermal Potential Map, which is designed to promote the use of geothermal heat pumps.*1) This map indicates Tokyo’s recoverable quantity of geothermal heat (potential) on a map using meshes of 50 meters and 250 meters. In addition, it also indicates approximations for the number of heat exchangers that will be needed for each type of building use to increase convenience for the users.

The Tokyo Metropolitan Government is aiming to further increase the energy savings of buildings, starting with remodeling metropolitan government-owned facilities. It has also stated that it will promote the use of a variety of different renewable energies, including geothermal, and continue boosting their usage share as much as possible. (May 2016)

 

Fig.  Tokyo Metropolitan Government’s Geothermal Potential Map
Fig.  Tokyo Metropolitan Government’s Geothermal Potential Map
Source: Tokyo Metropolitan Government press release
http://www.metro.tokyo.jp/INET/OSHIRASE/2016/03/20q3o500.htm

 

*1)
The temperature underground is stable at about 15°C year-round down at depths of 10 - 15 meters, making it possible to conserve more energy than by air conditioning that exchanges heat with the atmosphere. Air conditioning systems that use underground heat in this manner are called geothermal heat pumps. Since it also reduces the heat emitted into the atmosphere by ordinary air conditioning units, it is useful for preventing the heat island phenomena in the summertime.

 

Reference materials:
• Tokyo Metropolitan Government press release
http://www.metro.tokyo.jp/INET/OSHIRASE/2016/03/20q3o500.htm
• Tokyo Metropolitan Government’s Long-term Vision
http://www.seisakukikaku.metro.tokyo.jp/tokyo_vision/vision_index/index.html
• Installation Status for Ground Source Heat Pumps
https://www.asiabiomass.jp/english/topics/1503_03.html

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