
It is generally necessary to count between €2,100 and €2,300 per kWp (kilowatt-peak or peak power) of photovoltaic cells (taking into account the total cost: supports, fixing, panels, inverters, etc).

The International Renewable Energy Agency (IRENA) is an intergovernmental organization mandated to facilitate cooperation, advance knowledge, and promote the adoption and sustainable use of . It is the first international organisation to focus exclusively on renewable energy, addressing needs in both industrialised and developing countries. It was founded in 2009. . 國際再生能源總署(英文:International Renewable Energy Agency,縮寫:IRENA)是一個於2009年1月26日在成立的環保組織 ,現時有131個成員組織及政府,和37個要成為會員的簽署國/申請國。 這個組織主要目標是在全球範圍內積極推動、、及等可再生能源向廣泛普及和可持續利用的快速轉變。 IRENA的總部設在,在設.

is the largest market in the world for both and . China's photovoltaic industry began by making panels for , and transitioned to the manufacture of domestic panels in the late 1990s. After substantial government incentives were introduced in 2011, China's solar power market grew dramatically: the country became the