- DR Verification Experiment and the New Service Development in Housing Complexes
The Yokohama Smart City Project (YSCP) is moving ahead with verification experiments involving the shared use of ENE-FARM household fuel cell cogeneration systems installed in company housing estates operated by Tokyo Gas Co., Ltd. and JX Nippon Oil & Energy Corporation, and Demand Response (DR) issuance linked into a CEMS (Community Energy Management System). Daikyo Astage Inc. is analyzing the data collected by the HEMS (Home Energy Management Systems) installed into existing condominiums, and is in the process of developing new services for providing security surveillance and lifestyle support for condominium residents.
- Report on the Latest Achievements to Encourage Small and Medium Sized Businesses to Take Part
The Yokohama Media and Communications Center is located not far from Yamashita Park in Naka-ku, Yokohama City. The Yokohama Smart Community Project (YSCP) Forum was held in a hall within this Center on July 23, 2013. The forum was held so that the companies taking part in the YSCP could report on their latest achievements, and it represented the third time the forum has been held. The event is primarily attended by approximately 150 representatives from small and medium sized companies located within Yokohama City, and the administrators of companies interested in smart communities listened very carefully to the reports on the latest project developments.
- Verification Experiment on over 1,500 Households Equipped with HEMS this Summer
The nation's largest verification experiment on the issuance of Demand Response (DR) will start in the summer of 2013 as part of the Yokohama Smart City Project (YSCP) that City of Yokohama is currently involved in. HEMS (Home Energy Management Systems) will be installed in over 1,500 households to analyze differences in consumer customs with the use of Critical Peak Pricing (CPP) and other functions available on a DR menu, the results of which will be used for controlling demand in the future. The installation of EMS (Energy Management Systems) in condominiums will commence at the same time. These will be linked in with the monitoring services and security services, etc., available on the EMS for the purpose of verifying the commercialization of services.
|Name of city||City of Yokohama|
|Area||435.17km2 (as of August 2012)|
|Population||3,703,258 (as of January 2014)|
|Locations for the operational experiments||City of Yokohama as a whole, with a focus on three districts: The Minatomirai 21 district, the Kohoku New Town district, and the Yokohama Green Valley district|
|Area covered by the operational experiments||435.17km2(as of August 2012)|
|Number of households involved in the operational experiments||4,000 houses and apartments for social verifications and technology verifications|
|Number of workplaces involved in the operational experiments||4 office buildings, 3 commercial buildings, 4 apartments, 1 large-scale factory|
|Number of EV/PHV involved in the operational experiments||25 EV for demand response (DR) verifications (including 6 EV for charging/discharging; 2 charging stations with PV/storage batteries)|
|Target for introduction of photovoltaic generation, etc.||Photovoltaic (PV) generation: 27MW; HEMS: 4,000 households; EV: 2,000 vehicles|
About the city
With a population of 3.7 million, Yokohama is a large city even by world standards. Commercial buildings are clustered around the Yokohama Station area and factories concentrate around the bay, while residential areas are situated inland. The diverse topographical areas of the city include the commercial district centering on Minatomirai, with its numerous high-rise buildings on the site of a redeveloped bay area that used to be a shipyard; the large-scale "new town" area, developed between the 1970s and the 1990s and covering about 2,500 ha; and the bay around which large-scale apartment and industrial complexes are concentrated.
Overview of the project
The Yokohama Smart City Project (YSCP) is an effort to develop a model for smart cities by means of cooperation between citizens, private companies, and the municipality, and to export the successful model to Japan and the rest of the world. Large-scale operational experiments are being held with Yokohama, a large, advanced city with a diverse topographical range of districts, as the stage. The hierarchical bundling of energy management systems (EMS) enables energy management at the level of individual EMS and demand-side management at the level of the overall system.
Each of the EMS considers its respective environment in managing energy and making energy use visible. There are a number of different types of EMS: HEMS for houses, HEMS for residential complexes, HEMS for apartments, integrated BEMS, and FEMS, which optimally control factory operation. Integrated BEMS offer group management of BEMS for office buildings and commercial facilities. In addition to these, the CEMS brings together elements including the electric vehicles (EV) for charging and discharging verifications, charging stations, and the SCADA storage batteries that contribute to system stabilization, which will form the nucleus of next-generation transport systems, and offer optimal management of energy at the level of the community as a whole.
By means of optimal linking of the EMS, centering on the CEMS, we are creating infrastructure that will facilitate the large-scale introduction of renewable energies, for example by offsetting the instability of weather-sensitive photovoltaic (PV) generation. At the same time, we are conducting large-scale verifications of demand response (DR). In addition to curbing power demand by providing consumers with incentives to limit their electricity use, thus contributing to the reduction of CO2 at a lower social cost, we are realizing overall optimal energy management while testing DR to make it possible to absorb the surplus power that will be generated by the large-scale introduction of PV generation.
Our aim is to transform a city already provided with social infrastructure into a low-carbon city while maintaining the comfort of its residents. In order to do so, we will introduce a CEMS and develop and operate energy management systems optimized for this specific region. Together with these efforts, we will use PV generation and other forms of renewable energy, and work to change the way that citizens relate to energy. Specifically, we will introduce HEMS for homes, BEMS for offices and commercial buildings, FEMS for factories, and EV and charging stations for the transport sector, and we will curb peak energy demand and conserve energy through their mutual linkage.
Themes of operational experiments
PV generation, storage batteries, CEMS, HEMS, BEMS, FEMS, EV, charging infrastructure, SCADA storage batteries