Expanding Smart Energy Networks
Developing a SEN in the Northern District Adjacent to the East Exit of Tamachi StationThe Tokyo Gas Group has been collaborating with Minato Ward in Tokyo to develop a low-carbon, disaster-resilient community in the northern district adjacent to the east exit of Tamachi Station.
SEN Development in the Toyosu Wharf DistrictThe Tokyo Gas Group is pursuing urban development with the potential to extend deep into the 22nd century in a redevelopment area located around land the Group holds in the Toyosu wharf district of Tokyo’s Koto Ward. Under this project, “Tokyo Smart City TOYOSU 22,” we are undertaking futuristic urban development guided by the three concepts—“smart energy,” “smart green,” and “smart community,”—from a long-term perspective looking beyond the Tokyo 2020 Olympics and Paralympics, as a high-quality development to raise the value and appeal of the area.
In May 2016, we completed construction of a smart energy center in Zone 4 (see figure below), owned by Tokyo Gas Site Development Co., Ltd., in preparation for development of a SEN in the Toyosu wharf district. This is the second SEN to be developed by Tokyo Gas in an urban redevelopment district, the first being in the northern district adjacent to Tamachi Station’s east exit. The newly completed smart energy center will be equipped with one of the world’s most efficient CHP systems, which will supply electric power to the Toyosu wholesale market while waste heat is used to power equipment at the center. Environmental friendliness will be enhanced by adopting gas pressure differential power generation*1 using gas supply pressure. By applying CHP systems with blackout start specifications*2 to construct the systems, laying independent power lines*3 and employing disaster-resistant medium-pressure gas pipelines, we will create a system capable of an uninterrupted supply of heat and electricity, even during power outages or other emergencies, thus enhancing the district’s resilience to disaster. The network will also have a “SENEMS”*4 for centrally managing and controlling energy throughout the district using ICT. SENEMS will instantly analyze and process real-time information on supply and demand, weather conditions and specific characteristics associated with each day of the week in order to automatically optimize energy demand and supply for the area. We plan to progressively expand the heat and power network as development of Zones 4 and 2 progresses.
*1 Power generation based on the use of gas supply pressure.
*2 Process of independently restarting the generator during a power outage.
*3 Power lines laid independently by an operator. They can be used at a customer's discretion when grid power has been interrupted.
*4 Smart Energy Network Energy Management System.
Toyosu Wharf District Development Area
Tokyo Gas’s Toyosu Smart Energy Center
Kiyohara Smart Energy CenterIn October 2016, Tokyo Gas and Tokyo Gas Engineering Solutions began constructing the Kiyohara Smart Energy Center. This is based on a 30 MW-class cogeneration system that will supply electricity and heat in the form of steam and hot water to seven plants operated by three companies in the Kiyohara Industrial Complex on the outskirts of Utsunomiya City in Tochigi Prefecture. The project will supply a combination of electricity and heat to multiple plants in different industries as Japan’s first integrated energy-saving project serving multiple plants*1 in an inland industrial park.
*1 Project for saving energy by integrating production lines and sharing utilities between multiple plants to facilitate the mutual use of energy and products.
*2 System for realizing optimal operation and control of CHP systems by visualizing the energy use of each company and predicting electricity and thermal load trends.
*3 Rate of reduction compared to the combined electricity and gas usage data in fiscal 2015 for seven plants operated by Calbee, Inc., Canon Inc. and Hisamitsu Pharmaceutical Co., Inc.
*4 Rate of reduction compared to the combined CO2 emissions data in fiscal 2015 for seven plants operated by Calbee, Inc., Canon Inc. and Hisamitsu Pharmaceutical Co., Inc.
*5 Process of independently restarting the generator during a power outage. Capable of an uninterrupted supply of heat and electricity even during a power outage or another emergency by laying independent power lines and employing disaster-resistant medium-pressure gas pipelines.
Japan’s First SEN to Serve Neighboring Facilities in Nihonbashi MuromachiA large high-efficiency CHP system has been installed in the redevelopment zone in Nihonbashi Muromachi 3-chome to serve as an independent distributed power source. The system will supply electricity and heat to office buildings and commercial facilities in the surrounding area as well as within the redevelopment zone, making it the first such project in Japan. New projects of this kind will encourage the area-wide adoption of smart energy technologies and contribute to the development of cities that are much more resilient to disasters. The project is being run by Mitsui Fudosan TG Smart Energy, Inc. (a joint venture formed by Mitsui Fudosan and Tokyo Gas) and is expected to be completed in March 2019.
Participation in Yokohama’s Tsunashima-Higashi Smart Town ProjectThe Tokyo Gas Group is pursuing a number of projects, including development of an energy center, in Tsunashima Sustainable Smart Town, a next-generation urban smart city that will be developed on the former site of a Panasonic factory in the Tsunashima-Higashi district of Kohoku Ward in Yokohama, Kanagawa Prefecture. The first energy services came on stream in December 2016, and they are now being gradually expanded. The plan is to develop energy supply systems based on an advanced model for sharing heat and power supplies to diverse facilities over a more compact area than in the past. We will improve supply continuity by installing a CHP system in the town energy center and using multiple power sources and disaster-resistant medium-pressure gas lines. The use of more efficient equipment and area-wide energy utilization will also improve environmental friendliness. The delivery of energy services will ensure the financial viability of these improvements in supply stability and environmental friendliness.