Japan Photovoltaic Energy Association panel shipments in 2015. Japan Photovoltaic Energy Association Japan Photovoltaic Energy Association (JPEA) is the best-known body for solar photovoltaic energy companies in Japan. Founded on April 23, 1987, it has a number of objectives and activities, one of which is providing the JPEC certification for solar modules in the Japanese market. The association serves as a spokesperson for the photovoltaics energy industry in Japan. JPEA set a pathway for the photovoltaic industry in Japan to reach 100 GW by 2030, from roughly 30 GW in 2015. The group comprises multiple companies in the industry, and reported a 13% drop
Photovoltaic effect an electric potential (or voltage) is produced by the separation of charges, and the light has to have a sufficient energy to overcome the potential barrier for excitation. The physical essence of the difference is usually that photoelectric emission separates the charges by ballistic conduction and photovoltaic emission separates them by diffusion, but some "hot carrier" photovoltaic device concepts blur this distinction. The first solar cell, consisting of a layer of selenium covered with a thin film of gold, was experimented by Charles Fritts in 1884, but it had a very poor efficiency. A demonstration of the photovoltaic effect in