Let's enjoy learning about decarbonization!

"Thin, light, and bendable" perovskite solar cells

　Perovskite Solar Cell is a next-generation solar cell invented by Professor Riki Miyasaka of Toin University of Yokohama in Aoba Ward. Compared to conventional silicon solar cells, it has the following characteristics, so it can be expected to be deployed in various applications, and this technology can be said to be the key to expanding renewable energy.

・Thin, light, and bent
・It can be made with printing technology to paint and dry.
・Most of the raw materials can be procured in Japan
・Power can be generated even in weak light (cloudy weather, rainy weather, indoor)

　Taking advantage of this feature, it can be installed on the side of a building, on the veranda of an apartment, or on the window glass. In addition, it is expected to be a technology that greatly contributes to the realization of a decarbonized society with a wide range of applications, such as charging it on smartphones and installing it on sensors and IoT devices used indoors to power supplies.
　As commercialization progresses in the future, it may be possible to generate electricity in various parts of the city.

　In Yokohama City, we are conducting a social experiment in a wide-area share cycle business in order to promote the use of the share cycle, which is one of the means of transportation in the environmentally friendly region.

　Ports with shared cycles are being opened one after another in Aoba Ward, and are being installed not only in major stations such as Tama Plaza Station, but also in residential areas. It is also possible to borrow at a port near your home and return it to the port of the station. In May this year, a port was also set up at the temple family hometown village. It's a good idea to take a leisurely tour of the hometown village in a share cycle.

※Click here for the location of the port: Hello Cycling Homepage (Outside Site)

　Eco and convenient share cycle. Why don't you incorporate it into your daily life, such as shopping in your neighborhood, commuting to school or leisure?

　Did you know that about 12% of Japan's greenhouse gas emissions are derived from food?
　Ingredients seen in stores emit CO2 during production and transportation, but I think it is difficult to be aware of this in everyday life.
　Therefore, Keio University has developed and planned a “Delicious and Healthy Environment Friendly Curry Recipe Making Game” and used a block of colorful ingredients to allow you to play while experiencing the CO2 emissions of each ingredient by weight.
　In this game, you can enjoy and learn about decarbonization of food based on curry recipes that even small children love.
　This initiative is part of City of Yokohama, Housing and Architecture Bureau and Tokyu Corporation's efforts to create a next-generation suburban town. Next to this game, we will also introduce examples of initiatives related to decarbonization of "next-generation suburban town development". (Keio University, City of Yokohama, Housing and Architecture Bureau, Tokyu Corporation)

Benefits of Energy-Saving Housing

　High insulation (grades 6, 7 *) and high airtight energy-saving houses can reduce indoor temperature differences throughout the year with less air conditioning and heating, and can live "healthy", "comfort" and "economic" .
　Are the windows condensation at home in winter? This is evidence that the temperature of the heated room has escaped outside due to the low insulation performance of the windows. It's very wasteful. In addition, this condensation causes mold and ticks, which can cause allergic diseases in the family. It is also an advantage of energy-saving housing that can reduce such concerns.
　Make "healthy" and "comfortable" life "economical". We introduce the benefits that are friendly to both humans and the earth in an easy-to-understand manner.
※There are seven levels of "insulation grade" specified in the "Housing Performance Indication System", and "7" is the highest grade.