The project of the photovoltaic farming to reserve water in Taiwan came out in Mar, 2010 which was presented by Pingtung County Government after Typhoon Morakot brought floods and sludge which have submerged large tracts of land and fishponds in Linbian and Jiadong. The objective of this project is to link solar farm producers, Government, and local people's effort to improve local victims’ life quality, to help local industry transformation and to avoid pumping of groundwater and land subsidence. In order to analyze the economic value of this project and also promote it to other regions, Alexander Osterwalder & Yves Pigneur’s Business Model Canvas (2010) is quoted to analyze each block of the business model in this project. Through the establishment of the business model, it can provide a good solution for over-supply solar energy industry and also contribute to the environment.