Yokohama Smart City Project / Virtual Power Plant Projec

Yokohama Smart City Project /
Virtual Power Plant Project

In 2010, Yokohama was selected by the Ministry of Economy, Trade and Industry (METI) as one of four "Next-Generation Energy and Social System Demonstration Areas." Through its Yokohama Smart City Project (YSCP), the city works to provide a system optimizing energy supply and demand at individual homes, commercial buildings and in urban areas, in cooperation with 34 companies. Those include Japan's leading energy company, an electrical manufacturer, and construction companies.

In 2015, a new public-private body, the Yokohama Smart Business Association (YSBA), was established to advance the project from demonstration to implementation. Yokohama's aim is to be an energy-recycling city that is environmentally robust, resistant to disasters, and economically strong

Yokohama Smart Business Association

The Yokohama Smart Business Association (YSBA) was established to realize the energy-recycling promise of the YSCP demonstration; to promote new activities related to operation of energy management systems and energy interchanges; and to further develop, domestically and internationally, the energy technology and systems created to this point.

Yokohama Smart City Project Demonstration Tests

Chosen in 2010 by METI as a Next-Generation Energy and Social System Demonstration Area, Yokohama carried out its Yokohama Smart City Project (YSCP) at the demonstration stage. The demonstration's goals involved introduction of home energy management systems (HEMS), solar panels and electric vehicles (EVs). Those were achieved by fiscal 2013.

Results: HEMS - 4,200 systems (4,000); solar panels - 37 MW (27 MW); EVs - 2,300 vehicles (2,000 vehicles)

Virtual Power Plant Project

On July 6, 2016, Yokohama City, TEPCO Energy Partner, Incorporated (TEPCO EP), and Toshiba Corporation concluded a basic agreement on a Smart Resilience Virtual Power Plant (VPP) Project to construct VPPs in Yokohama.
At two schools in each of the 18 wards (elementary or junior-high schools) already designated as regional disaster prevention bases, TEPCO EP installed a 10-kWh or a 15-kWh storage battery. In normal periods, TEPCO EP uses them as demand response (DR) power sources using a control system developed by Toshiba. In emergencies, Yokohama will use them as emergency power sources.
For Yokohama, it is the first model case, carried out with national subsidies, and the results are shared externally. TEPCO EP automatically effects charging and discharging every 30 minutes using Toshiba's control system, maintaining levels of 70 to 80 percent of each storage battery's capacity. In emergencies, Yokohama will have that level of charge available as emergency power.

Hereinafter, as use of renewable energies increases along with cooperative efforts such cogeneration system (CGS) and Building Energy Management System (BEMS), the project to construct virtual power plants will be expanded. The city will promote more efficient use of energy and the entire region will promote energy management. In this way, the city will achieve an efficient balance of energy supply and demand in normal times and have disaster-prevention bases protected from power disruptions and available in emergencies.