Keihanna Eco-City Next-Generation Energy and Social Systems Demonstration Project

Latest Keihanna (Kyoto) news items

Confirming Demand-Curbing Effects in Wise Ways of Using Electricity Program in Second Year

The Wise Ways of Using Electricity Program, a part of the Keihanna Eco-City Next-Generation Energy and Social System Verification Experiment Project, entered its second year, and the program was implemented for the third time during the summer of 2013. The current verification of demand response (DR) indicated that the curbing effects of Time-of-Use (TOU) pricing were about the same as in the summer of 2012, but the effects of Critical Peak Pricing (CPP) declined. Energy-saving consulting was also introduced as a new method and the demand-curbing effects were confirmed.

Creating a New Community Culture through Verification Experiments

The Keihanna Eco-City Next-Generation Energy and Social System Verification Experiment Project is being carried out in Kansai Science City in order to save energy and reduce CO2 emissions throughout the community without adversely affecting quality of life, and various initiatives are being promoted for households, companies and transportation, etc. The project involves HEMS (Home Energy Management Systems), BEMS (Building Energy Management Systems), and an EV (Electric Vehicle)-charging management system targeting 100 EVs, with all of these consumer EMS connected to the CEMS (Community Energy Management System), which manages the supply and demand of energy for the entire community, leading to a diverse range of applications, such as the large-scale electricity of Demand Response (DR) issuance that has now been expanded to cover approximately 700 households within the experimentation community, etc. We interviewed Kyoto Prefecture vice-governor, Akimasa Yamashita, who is the chairman of the Keihanna Eco-City Next-Generation Energy and Social System Demonstration Project Council, with regard to the latest situation and the future of the verification experiment project.

Reducing Peak Electricity Demand in Factories with the Use of EV Storage Batteries

A V2X (Vehicle to X) system using the storage batteries (EV storage batteries) mounted in EVs (Electric Vehicles) and used EV storage batteries (reused storage batteries) to store electricity and as additional power sources has been created, and a verification experiment to verify the effects, etc., of standardizing power demand (reducing peak demand) in the factories that have installed them was carried out. This resulted in electrical power being supplied to a factory office block from storage batteries and solar power generators, and an average band reduction rate of 12.7% was achieved without losing any of the convenience of EVs during the peak demand reduction implementation period (1pm to 4pm) between September and December 2012.

Regional information

Name of city Kansai Bunka Gakujutsu Kenkyu Toshi (Kansai Science City)
Area 1.541 million Km2(as of April 2012)
Population 244,872 (as of April 2012)
Locations for operational experiments The Seika and Nishi Kizu districts (Kyotanabe City / Kizugawa City / Seika Town, Kyoto Prefecture)
Area covered by operational experiments 77,370km2(as of April 2012)
Population of areas involved in the operational experiments 102,024 (as of April 2012)
Number of households involved in the operational experiments Introduction of HEMS: 14 households; Introduction of systems to render energy use visible: approximately 100 households; Power demand response (DR): Approximately 700 households (all as of April 2012)
Number of workplaces involved in the operational experiments Introduction of BEMS: One facility (Keihanna Plaza; as of April 2012)
Number of EV/PHV involved in the operational experiments 60 (as of April 2012)

Characteristics of the region

Kansai Bunka Gakujutsu Kenkyu Toshi (Kansai Science City) is situated in a hilly region that spans three prefectures (Kyoto, Osaka, and Nara Prefectures) and is the location of eight municipalities. It is a new city constructed by a national project to serve as a center of culture, learning, and research, a new cultural capital intended to open paths into the future. In addition to the Advanced Telecommunications Research Institute International and the Kansai-kan of the National Diet Library, the city is home to a large number of company laboratories and other research institutes, and possesses strong technological and communications capacity.

Overview of the project

In addition to its research institutes, universities, companies and other institutions, Kansai Science City is proceeding with a large-scale housing development, making it the ideal location for testing and verifying the outcomes of research on advanced technologies and new social systems in cooperation with residents. Making full use of this environment, the project seeks to develop a Community Energy Management System (CEMS) that will minimize CO2 emissions without affecting quality of life or convenience for residents, looking towards the construction of a next-generation energy society. Beginning with assisting in recovery from the Great East Japan Earthquake, the project will extend the developed model to the rest of the world.

Project orientation

The optimization of energy supply and demand on a global scale. Realization of this goal will involve the development of systems including a Community Energy Management System (CEMS) for comprehensive management of energy in the community, a Home EMS (HEMS) to manage energy supply and demand in the home, power demand response (DR) for energy management including large-scale DR, a Building EMS (BEMS) to manage energy in buildings, an electric vehicle (EV) charging management system, and V2X (Vehicle to X). The linkage of these systems with the grid power. Specifically, in homes and buildings,

we will conduct Demand Response linking the CEMS to HEMS, BEMS, and EV charging management centers in order to verify the effect in saving energy and reducing CO2 emissions. In the EV charging management system, we will verify the peak shift effect to be obtained from deriving the charging location and time from the location of the EV and the remaining power in the storage batteries. In the area of V2X, we will verify the use of EV storage batteries in relation to the supply and demand of power to factories. Based on the outcomes, we will create a business around the Keihanna Eco City Model, and extend it to the reconstruction of cities in the Tohoku area and promote its application in the rest of the world.

Subjects of the operational experiments

CEMS, HEMS, power DR, BEMS, EV management system, V2X

Participating companies and organizations

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