- Towards the Achievement of Community Energy Management with Local Production for Local Consumption
An important concept under study in the Kitakyushu Smart Community Project is "energy management with local production for local consumption." This means that all the energy produced in a region is used in that region. The key points here are to produce one's own energy and at the same time discover and use untapped energy and make sure that customers conserve energy and control their energy demand in keeping with the community's supply and demand status. To achieve these, the demonstration project developed a visualization mechanism and a community energy management system (CEMS). Initiatives have begun seeking to further develop this mechanism in the Higashida District (the demonstration community) and use the results for development in Japan and abroad.
- Using Close Communication to Encourage Energy-Saving Behavior in the Workplace
One of the most noted outcomes of the Kitakyushu Smart Community Project has been the results of demonstrating dynamic pricing. In dynamic pricing, the actual unit price of electric power is changed depending on supply and demand. The results show that the demonstration was very effective. Namely, when citizens were shown an electricity price higher than normal, the energy savings was about 20%. On the other hand, in workplaces, where there is a greater emphasis on operations, simply making the price visible ("visualization") was not effective. Therefore, based on questionnaire results and other data, the city of Kitakyushu found that by active communication to encourage energy saving, it could successfully change workplace behavior. The finding is likely to create a sensation in terms of workplace energy-saving techniques.
- Presentation on performance over a five-year period held in Tokyo
Kitakyushu Smart Community Creation Project, which started in 2010, is approaching its final fiscal year. What effects did this technical verification have, and what were the participants' impressions? Kitakyushu held a results presentation in Tokyo on February 23, 2015. The business owners that led the technical verification project reported on the results of the dynamic pricing and energy management system (EMS), in which energy units fluctuate according to demand and supply conditions, while consumers engaged in lively debates during roundtable discussions.
|Name of city||City of Kitakyushu|
|Area||488.78km2(as of October 2011)|
|Population||971,924 (estimated as of August 2012)|
|Locations for operational experiments||The Higashida area in Yahata-Higashi ward|
|Area covered by the operational experiments||Approximately 1.2km2|
|Number of households involved in the operational experiments||225 households (as of August 2012)|
|Number of workplaces involved in the operational experiments||50 (as of August 2012)|
|Number of smart meters installed||225 (as of August 2012)|
|Level of introduction of photovoltaic generation, etc.||Storage batteries: Approximately 800 kW; Photovoltaic (PV): Approximately 400 kW; Fuel cells: Approximately 110 kW|
About the city
The City of Kitakyushu is a government-designated city located at the Northeast tip of the Kyushu area, with a population of more than 970,000 people. Following the construction of the Yawata Steel Works in 1901, the City of Kitakyushu developed as a center of heavy and chemical industry, but in the 1960s the city faced problems of air pollution and contamination of the waters of Dokai Bay. Having overcome its various problems by means of measures to respond to and prevent pollution, the city is now making efforts to tackle environmental problems. In the Higashida area of Yahata-Higashi ward, the site of the operational experiments and of the Yawata Steel Works, the city is proceeding with the development of a new city district on unused land. In addition to other attractions, this area encompasses Space World, with its theme of outer space, and a large-scale shopping center. A center for international logistics, in the new district the City of Kitakyushu is pushing ahead with the establishment of a variety of new energy distribution infrastructure, for example for the supply of energy produced by natural gas cogeneration by means of the steelworks' transmission network, and the supply of hydrogen produced by the steelworks by pipeline to areas within the district.
Overview of the project
Sketching a vision of the optimum form for community energy management, the project will seek to create the appropriate social structures for a low-carbon society by innovating lifestyles, business styles, and urban planning styles. By means of the establishment and operation of a customer energy management system called Smart Community Center or the Community "Setsuden-sho," we aim to establish mechanisms for citizens and companies to think about and participate in the process of energy distribution. We believe that making energy use visible can encourage change in lifestyles and business styles. In addition, other initiatives will include preparation for the large-scale introduction of next-generation vehicles and their linkage with public transport. The outcomes of the operational experiments in the Higashida area will be extended to other areas of the City of Kitakyushu, for example the Jono district in Kokurakita ward (approximately 20 km2 in area), which is being newly developed, and from there to the rest of Japan and the world.
Due to factors including the establishment of environmental facilities and the introduction of a range of new energy sources, the Higashida area in Yahata-Higashi ward of the City of Kitakyushu already emits 30% less CO2 than other areas in the city. This proving trial aims, by means of initiatives including further introduction of new energies, the use of community energy management, and the establishment of new transport systems, to achieve a further 20% reduction, reducing CO2 emissions to more than 50% less than other areas in the city. The following five measures are being put into effect as the concrete means of achieving this goal.
(1) Increase the rate of introduction of new energy sources, including photovoltaic generation, fuel cells, and small-scale wind power generation, to 10% or more
(2) Development of HEMS and BEMS, which can be coordinated with community energy management, increasing the efficiency of energy saving in normal homes and various types of buildings
(3) Establishment of a Community Setsuden-sho, which provides advanced energy control and optimizes total energy distribution, encompassing electric vehicles (EV), storage batteries, etc.
(4) In parallel with the establishment of charging infrastructure to facilitate large-scale introduction of EV, etc., the construction of next-generation traffic systems linking bicycles and public transport.
(5) The extension of the new technological systems and business models emerging from the operational experiments to Asia via an Asia Low-carbon Center, and then to the world
Subjects of operational experiments
Photovoltaic generation, wind power generation, heat energy, hydrogen, CEMS, BEMS, HEMS, EV, "demand bus lifestyle," Data Center, networks