Canadian environmental activist, David Suzuki, once said “Doing all we can to combat climate change comes with numerous benefits, from reducing pollution and associated health care costs to strengthening and diversifying the economy by shifting to renewable energy, among other measures.”. Japan is widely known for being one of the leading countries when it comes to developing alternative forms of energy.

Renewable energy technologies are extremely important for sustainable development mainly because it offers a smaller number of difficulties than conventional forms of energy technologies.

At the University of Tokyo, a new dye solar cell with cutting-edge solar function had been created by an excellent Japanese professor named Hiroshi Segawa. As an advocate of renewable energy, the professor from University of Tokyo’s Research Center for Advanced Science and Technology had decided to invent a solar power cell in the form of a stained glass with a decorative pattern which resembles a flower called Hydrangea. Hiroshi believes that the existing renewable energy sources in Japan like wind mills are not purely advantageous because they, too, have their own major setbacks. For example, wind mills take up too much space and harm birds from time to time. Because of this, Hiroshi was motivated to create a form of alternative energy source which is not space-consuming or harmful to any living organism.

Professor Hiroshi Segawa had invented a dye-sensitised solar cell which he called Annabelle, a white species of the Hydrangea flower which he used as an inspiration for his awe-inspiring stained glass solar cells. The Annabelle can be used anywhere because of its pleasant design. In addition to this, it can also be used in storing enough power to recharge certain gadgets like modern mobile phones. As it charges, the Hydrangea’s white petals turn blue and as it discharges the energy it stored, it turns back to white while its leaves generate the stored electricity of the flower. According to Hiroshi, Annabelle works even in weak indoor lighting, making it convenient to use inside households.

Indeed, Hiroshi’s invention, while at first seems of lesser value than commercial solar panels, is still brilliant because of the creativity it brings in the usage of alternative solar energy. This form of enjoyable energy will, without a doubt, not only help solar sectors but improve people’s understanding as well of what alternative energy truly is. Hiroshi is currently experimenting on solar cells by creating a few stained glasses that resemble French Prime Minister Francois Hollande and Hatsune Miku, a famous Japanese pop star. Hiroshi even further explained in his AFP interview that anyone can make solar cells out of portraits of people and animated characters. It is to be expected that “Annabelle” will be available in a variety of designs in the future and might be called names that are different than that of Segawa’s prototype solar device, Hydrangea.

Many individuals believe that this form of enjoyable energy Segawa was able to build proves that technological marvels do not always have to follow the typical unappealing image most alternative energy sources have because it is possible for visual appeal and technology to be merged into one power saving device.


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Yahoo. (2014). Green power blooms as Japan unveils ‘hydrangea solar cell’. Retrieved

December 16, 2014, from