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The Japanese government and private companies are making large-scale investments to mass-produce ‘perovskite’, which is considered a next-generation solar cell. Japan, which suffered from a low-priced offensive from China in the past and lost its leadership in the solar market, seems to be recovering its energy sovereignty and decarbonization competitiveness with perovskite that can demonstrate its technology and raw material strengths.
According to the Nihon Keizai Shimbun (Nikkei) on the 27th, Japan’s Ministry of Economy, Trade and Industry plans to soon select Rico and Choshu Industries as companies eligible for subsidies related to green transition (GX). The government will provide about 100 billion yen for four years until 2029, and the companies will also invest more than subsidies to build mass production plants.
RICO, an office equipment company, is developing thin, well-bending film-type perovskite solar cells using the printing technology “inkjet” method. Its strength is that it can lower manufacturing costs than existing laser methods. Choshu Industrial, a solar energy company, is mainly developing a ‘tandem type’ in which perovskite is overlapped on existing silicon solar panels.
The Japanese industry is fighting for speed, taking 2027 as the ‘first year of perovskite mass production’. Sekisisolar Films, a subsidiary of Sekisie Chemical Industry, will start mass production of film-type products in 2027, and Panasonic Holdings will start mass production of BIPV products that can be applied to the window glass of buildings in 2029.
Perovskite is seen as a ‘cheat key’ for Japan to regain its leadership in the solar market. Japan is the world’s second-largest producer of iodine, a key raw material for perovskite, and is stable in terms of economic security due to its advantage in establishing its own supply chain. In addition, it has the advantage of being light and thin and installing it in various places such as building walls and curved surfaces at a time when environmental destruction and undeveloped problems caused by the installation of large silicon panels have attracted attention.
The global leadership battle is already intensifying. China is preoccupying the market with glass-type products that are easy to mass-produce, and is closely pursuing film-type fields that Japan has strengths in. In terms of the number of valid perovskite patents filed in more than two countries, China has already overtaken Japan to become the world’s No. 1 in 2023, according to a survey by the Nihon Keizai Shimbun.
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