'Photovoltaic (pv) of the world' this is a comprehensive system to introduce the development of photovoltaic (pv) in the past, present and future the sum of the corpus, wide-ranging, photovoltaic stents can meet the needs of different readers. What power projects is the plate heat exchanger model parameters results show that the solar power plants can significantly reduce operational costs, Estimated processing cost can be reduced about 7%) In the second quarter of 2019, the project approved by the B2Gold board. Solar photovoltaic webex: public gold mining company located in vancouver, British Columbia, Canada B2Gold Corporation recently announced that the company has completed a preliminary study, plate heat exchanger model parameters to evaluate the add Fekola mine technical and economic feasibility of solar power plant. This paper not only includes editor Wolfgang & middot; Dr Parr, herself, in its new energy career of more than 50 years, the deep understanding of the development of photovoltaic (pv) and system summary, polysilicon which positions so big power station also includes global photovoltaic industry professionals engaged in new energy or a review of the photovoltaic difficult development, solar photovoltaic (pv) network statement: this information is reproduced from the power grid cooperation media or other Internet web site, solar photovoltaic network published the article for the purpose of the information, does not mean that agree with his point of view or confirm its description. Photovoltaic bracket of the study results show that this is a very reliable project, with about 30 mw of solar power generation capacity of the device has a significant battery storage unit will provide the best economic effect. At present the second study has been completed, the project has been established for the project detailed analysis of the capital and operating costs. Large power station is reported that Fekola solar power plant project was completed in August 2020, and there are four years of investment returns. The article content is for reference only.