Utilities and households with demand has a different degree of growth, and industrial and commercial demand due to California, solar energy, Massachusetts and Minnesota core markets such as the major policy shift is restrained. Photovoltaic (pv) of the tax cuts at the end of last year, the United States ( ITC) Policy fails to pass the United States congress and the White House budget, solar net, do not have to delay again, analysts think the policy purpose is to encourage emerging technologies, and the United States in recent years show that the growth of photovoltaic power this goal has been achieved, the photovoltaic system engineering case study in the future the market will gradually from policy driven to market driven. Photovoltaic installation labor we think after the outbreak of the new champions league this year, the federal government could give the ITC down delay ( 宽限期) Time, installed backwards installed capacity not only strong growth this year, but less likely than last year, in 10 - large probability Between 13 gigawatts (gw). Solar photovoltaic (pv) network statement: this information is reproduced from the media or other Internet web site, network cooperation 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. This paper statistics the September to today issued a total of 2. 85 gw pv power plant EPC and 1. 9 gw component bid opening information. But because the country is suffering from severe challenges of coronavirus, tax financial markets for solar funding is drying up, China's solar energy network, at the same time, many located in California, New York, Florida and other areas of photovoltaic (pv) project has been shutdown to slow the spread of the virus, unexpected changes have taken place in the situation. Among them, the solar net, photovoltaic installation labor EPC project owner units is given priority to with soe/state, this also reflected from the side, in project bidding and parity, the state-owned enterprises have become the absolute main force. The United States installed 13 2019. 3 gw, up 23% from 2018. The solar industry association ( 太阳能工业协会) In march, according to the results of the survey at the end of the solar panels, solar industry suffered badly in the outbreak, delay from equipment supply, construction delay, field staff layoffs, to small and medium enterprises become more and more worse. Systems engineering case analysis in particular, CGNPC in development of 410 mw, 603 mw, guangzhou energy saving 220 mw, 345 mw, jin can group the people vote for 200 mw, 190 mw power plant in hubei province energy group, huaneng 180 mw, in effect, a trade war, China components direct export to the United States is not much, power generation project supply chain focused on southeast Asia. Component prices last year under the ITC can't extend the deadline anticipation has remained high. Solar photovoltaic webex: before new crown virus outbreak, BNEF and Wood Mackenzie forecast in 2020 will be the photovoltaic market strong growth in a year, and believe that utility power stations in 2020 - Dominating the us market in 2022. The article content is for reference only. Power projects but we still think some trends may be late, but I can't absent, such as the driving force of the photovoltaic market transformation and the great project of short-term trends, etc. , so hope without considering the effects of epidemic situation report in the still can give the personage inside course of study for reference.