in order to implement China's energy-saving and emission-reduction targets promised to the world, strengthen policies to support the new energy economy strategy, and accelerate the application of solar photovoltaic technology in urban and rural buildings, relevant state ministries and commissions have launched the solar roof plan. The solar roof plan focuses on breaking through and solving the problems of insufficient integrated design ability of photovoltaic buildings, low degree of integration between photovoltaic products and buildings, difficulty in photovoltaic grid connection and low market awareness. The solar roof plan comprehensively considers economic and social benefits, and actively promotes the integrated demonstration of photovoltaic buildings such as solar roofs and photovoltaic curtain walls in large and medium-sized cities with developed economy and good industrial base at this stage; Actively support the development of off-grid power generation in rural and remote areas, implement power transmission to the countryside, and implement the national policy of benefiting the people. The solar roof plan mobilizes the enthusiasm of all sectors of society through demonstration projects and promotes the implementation of relevant national policies. Strengthen the publicity of demonstration projects, expand the influence, enhance market awareness, and form a good social atmosphere for the development of solar photovoltaic products; Promote the implementation of policies such as sharing electricity prices on the internet, form policy synergies, and amplify policy effects; As an important content of building energy conservation, the application of photoelectric building is actively promoted and used in new buildings, energy-saving renovation of existing buildings and urban lighting. The solar roof policy limits that the demonstration project must be larger than 5kW, that is, it needs at least 4 square meters of installation area, so it is difficult for ordinary residential buildings to participate, and qualified owners will concentrate on public and commercial buildings such as schools, hospitals and governments. After considering the subsidy from the Ministry of Finance, the cost of power consumption can be reduced to .58 yuan /kWh. It is still unclear whether the photovoltaic on-grid tariff can give a premium to the thermal power on-grid tariff, but even if there is no premium, the owners still have the incentive to build photovoltaic projects to generate electricity for their own use instead of buying electricity from the grid because the power generation cost is lower than the grid sales tariff. What's more, we can expect local governments to give additional subsidy policies, and the cost of power generation will be further reduced. [Edit this paragraph] The plan of solar roof was released after the Ministry of Finance and the Ministry of Housing and Urban-Rural Development issued the "Implementation Opinions on Accelerating the Application of Solar Photovoltaic Buildings". Solar energy concept stocks in the secondary market collectively "blowout", among which many varieties such as Aerospace Electromechanical, Leshan Electric Power, Three Gorges New Materials, Tianwei Baobian, CSG A, Vosges, etc. pulled two daily limit, and the heat of the plate suddenly warmed up. The theme energy of solar energy in the Hong Kong market also rose sharply due to the favorable policies of the mainland. On Friday, Sunshine Energy (757.HK) rose by 21.9%, Xingye Solar (75.HK) rose by 16.67%, and Zhifu Energy (151.HK) rose by 69.9%. The American market on the other side of the ocean also smelled business opportunities, and options traders began to pursue China solar-related enterprises crazily, among which Suntech's share price rose by 44%, Jiangxi Saiwei rose by 32%, and Jingao rose by 42%. [Edit this paragraph] New energy will be an industrial revolution. With the rapid progress of science and technology, mankind's ability to exploit traditional energy sources such as oil and coal has been rapidly improved. At the same time, with the development of human society, the demand for these energy sources is increasing day by day, and the pollution and non-renewable characteristics of traditional energy sources determine that human beings must look for clean, green and renewable new energy sources to replace traditional energy sources, and solar energy is one of such energy sources. As the largest energy consumer in the world, in order to reduce energy consumption and greenhouse gas emissions and adjust the energy structure, the United States put forward the "Million Solar Roof Plan" as early as 1997, with the goal of installing solar energy systems on 1 million roofs or other possible parts of buildings by 21, which greatly improved the solar energy application technology in the United States. As soon as the new president Barack Obama took office, he took the energy strategy as a trump card for the new government to lead the United States out of economic difficulties. In February this year, in the stimulus plan issued by the United States, the Department of Energy was required to provide $6 billion in loan guarantees for new energy projects. As far as China is concerned, the development of new energy sources is also of great significance. At present, China's dependence on foreign oil has reached 51%. The shortage of energy has brought great hidden dangers to national security, and the violent fluctuation of international oil prices has also caused great economic losses to China. Therefore, the introduction of new energy policies, including encouraging solar energy, is not only of great practical significance for realizing industrial restructuring, promoting the transformation of economic growth mode and expanding employment, but also has long-term social, environmental and economic benefits. With the strong support of the policies of all countries in the world, the rise of new energy industry has become an industrial revolution leading the world economy out of the trough, and the development space of related industries is extremely broad. [Edit this paragraph] Unprecedented policy support in the field of solar energy. In fact, the solar energy sector has been sought after by the market for a long time. As the most promising renewable clean energy in the 21st century, solar energy has already attracted the attention of the market, which is the main reason why the decline of this sector in the bear market is far less than that of other sectors. The introduction of this favorable measure will undoubtedly stimulate the enthusiasm of the market again. The government has decided that the central government will subsidize the application of solar energy, and the subsidy standard in 29 will be 2 yuan /Wp in principle. According to estimates, such subsidy standards can cover about 3%-5% of the production costs of related enterprises, and its support is unprecedented. This will greatly reduce the cost of solar photovoltaic power generation and contribute to the popularization of solar photovoltaic utilization technology. The opinions clearly put forward a series of principles and measures, such as implementing the "solar roof plan", giving financial subsidies to the demonstration project of photovoltaic building application, encouraging technological progress and scientific and technological innovation, encouraging local governments to introduce relevant financial support policies, and strengthening policy support in the construction field. At this stage, we will actively promote the integrated demonstration of photovoltaic buildings such as solar roofs and photovoltaic curtain walls in large and medium-sized cities with developed economies and good industrial bases; Actively supporting the development of off-grid power generation in rural and remote areas and implementing relevant regulations such as sending electricity to the countryside have pointed out the direction for the application of solar energy technology. Taking the integration of photovoltaic buildings such as solar roofs and photovoltaic curtain walls as a breakthrough, people may see many benefits of applying solar energy in a short time, which is also conducive to large-scale promotion in the future and stimulates the enthusiasm of industrial capital to invest in solar energy. [Edit this paragraph] There are many opportunities in the solar sector. At present, China has become the largest producer of solar cells in the world, and a number of photoelectric production enterprises with international competitiveness and international reputation, represented by Wuxi Suntech, have emerged, forming a large-scale, international and professional industrial chain. However, due to many reasons, such as high power generation cost, low photoelectric conversion rate, photovoltaic grid connection and low people's cognitive level, the current domestic market demand is insufficient, which affects the industrial development to some extent. The sharp shrinkage of domestic and foreign demand in the short term has made the photovoltaic industry with external dependence as high as 7%-9% depressed. The introduction of this policy, such as seeing the clouds, has made the photovoltaic industry see hope. Although this benefit is mainly aimed at the application of solar photovoltaic building represented by "solar roof", it can be expected that thanks to the huge development space of the solar energy industry and the strong support of the government, the emergence of solar power stations will not be far off, and the photovoltaic industry in China will surely experience explosive growth in the future. If the solar energy industry is a huge cake, it can only be fully shared by the forerunners. At present, a number of listed companies have been at the forefront in terms of polysilicon. In terms of polysilicon, Tianwei Baobian, Tongwei Shares, CSG, Jiangsu Sunshine, Sichuan Investment Energy, Aerospace Electromechanical and Ordos are all leading figures. Because of its obvious cost advantage, many companies, such as Vosges, Tuo Ri Xinneng, Variety, Jinjing Technology, etc., are also actively involved, and their development potential cannot be underestimated. The Three Gorges new material and *ST Luobo, which hold the silica sand resources in the upstream of solar energy, are also worthy of special attention. Of course, in the short term, due to the rush of enterprise investment in the past two years, the polysilicon production capacity has been released too quickly, and the contradiction between supply and demand is very prominent. Many enterprises are facing losses in these projects, but under the impetus of favorable policies, a considerable number of production capacity will be digested. From the long-term coming year, the development of the current solar energy industry is just the beginning, and the solar energy sector is welcoming a sunny day [Edit this paragraph] The feasibility study of Shanghai's 1, solar roof plan "Shanghai's 1, solar roof plan" has recently completed the first draft, and it is not far away to build a power plant on the roof! According to the plan, in the future, 1, roofs in Shanghai are expected to be equipped with solar power generation systems, generating at least 43 million kWh of electricity every year. This is certainly good news for Shanghai, which is in a power shortage, so China is short of energy, and we can't live up to the bright sunshine overhead. Keywords: Solar Power Plant Roof Feasibility Study of "Shanghai 1, Solar Roofs Plan" The first draft was recently completed, and it is no longer far to build a "power plant" on the roof! According to the plan, in the future, 1, roofs in Shanghai are expected to be equipped with solar power generation systems, generating at least 43 million kWh of electricity every year. For Shanghai, which is in a power shortage, this is of course good news. Then-"China is short of energy, and we can't live up to the great sunshine overhead." This is the appeal of Professor Cui Rongqiang, the host of "Shanghai 1, Solar Roofs Project" and director of the Solar Energy Research Institute of Shanghai Jiaotong University. Facing the imminent energy crisis, solar energy is favored by energy experts all over the world because of its clean, efficient and inexhaustible characteristics, and is called "golden electricity" by people in the industry. Shanghai without oil fields and coal mines has 2 million square meters of roofs. As long as there is sunshine every day, each roof will be a small green power plant. A giant "power plant" can be built by combining the roofs and building facades in Shanghai. Take 1.5% of the existing 2 million square meters flat roofs in Shanghai, that is, 1, roofs (about 3 million square meters), and install a "solar grid-connected roof photovoltaic power generation system" for it, which can generate at least 43 million kWh of electricity every year. High investment, who will pay the bill to use these ordinary roofs to get electricity, how much investment is needed? According to the current market price, it will cost about 15 billion yuan to install photovoltaic power generation systems on 1, roofs. For such a huge plan, the project is planned to be completed in two phases. The first phase (26-21): 1, sets of photovoltaic roofs were completed, each with 3kW. The installed capacity is 3, kW and the annual power generation is 33 million kW/h.. Calculated at 15, yuan per set, the first phase needs to invest 1.27 billion yuan. The second phase (211-215): 9, sets of photovoltaic roofs were completed, each with 3kW installed capacity of 27, kW and annual power generation of 297 million kW/h. Calculated at 9, yuan per set, it needs to invest 9.26 billion yuan. Solar roof is expensive, who will pay for it? "Just like the installation of gas pipelines in Shanghai, solar roofs can also be implemented in this way." Professor Cui believes that the government should take the lead in the implementation of the installation, and the funds needed for the project can be raised from various sources. This project discusses the current "subsidy law" in Japan to promote the "photovoltaic roof". The operation is relatively simple and feasible, and it is recommended to try it out in Shanghai. The so-called "subsidy law" is to subsidize users who first install photovoltaic roofs. The amount of government subsidies can start from 5% and then decrease year by year, and the amount of subsidies can be controlled by the annual promotion. Experts also suggested that the sources of funds should be shared in Shanghai power grid. It is estimated that the electricity consumption in Shanghai in 25 reached 96 billion kW/h. If the electricity charge is .1 yuan more per 1kW/h, the city can collect nearly 96 million yuan more electricity every year. This money and the funds used by Shanghai Green Power for photovoltaic power generation will be combined into "Shanghai Sunshine Fund" to subsidize "1, solar photovoltaic roofs in Shanghai", which basically balances the budget, and even provides some support for photovoltaic research and industry. The key to popularization and development: reducing the cost of roof power generation is imminent. At present, the problem faced by this project is that the raw materials for the mass production of crystalline silicon solar cells for photovoltaic roofs are in serious shortage, and 9% of the raw materials need to be purchased abroad at present. Therefore, experts suggest that relevant departments organize efforts to tackle key problems, solve the problem of localization of materials, and create conditions for a substantial price reduction of photovoltaic roofs. Director Ma Xingfa of the Social Development Department of Shanghai Science and Technology Commission believes that the implementation of the "Shanghai 1, Solar Roofs Plan" project can also drive the photovoltaic industry in Shanghai to take off, thus objectively promoting the localization of solar cell materials, rapidly reducing costs, and even guiding the birth of "zero-energy buildings" and "capacity buildings" in Shanghai. "Fifteen years ago, mobile phones were still a luxury in the eyes of many people. Isn't it common now?" Professor Cui told reporters that, like mobile phones, with the expansion of production scale, the cost of solar roofs will decrease year by year. At present, the cost of solar roof in China is about 5 yuan/watt, which is about 3-4 dollars/watt internationally. With the further maturity of technology, the cost may drop to 1 dollar/watt in the future. The life of a set of solar panels on the roof is about 3-5 years, during which there is no need for maintenance and the use cost is close to zero. According to the prediction of Japanese and European and American scientists, by 21, the international cost of photovoltaic power generation can be reduced to below 6 cents/kWh (equivalent to .5 yuan RMB/kWh), which can be roughly equal to the cost of thermal power generation. In addition to the cost factor, Director Ma Xingfa said that the property rights of the roof and the management problems after the solar roof is completed also need to be solved in the plan. The plan needs a "sunshine policy". You only need to buy a set of equipment and then do nothing. You can make money sitting at home every day, and on the other hand, you can provide the country with the clean energy it needs. This is the "Million Roof Plan" implemented by Germany and other countries in the 199s. According to the German government, the solar power station will be subsidized by the government by .574 Euro cents (equivalent to RMB 5.74) for every 1kW of electricity generated in the public power grid, and the price of residential rooftop power generation will be higher than that of solar power station. The electricity price in Germany is .1 Euro/kWh, while the price of solar power generation repurchased by power companies is .5 Euro/kWh. The price difference has aroused the enthusiasm of residents. Compared with few respondents who took the lead in launching the roof plan in the world before 199, by 24, Germany had installed 1, solar roofs. National policy guidance and even mandatory regulations are the key to the large-scale application of solar energy in Germany and other countries. In addition to providing 1-year interest-free credit, the German government also provides 37.5% subsidies. In addition, relevant policies have been formulated to ensure that power transmission companies have the priority to purchase solar power on the roof and ensure that the electricity price of solar power generation is higher than that of conventional energy generation. A series of preferential policies have played an escort role for the promotion of the 1, roof plan in Germany. Professor Cui said that abundant sunshine, first-class solar research institutions, mature photovoltaic power generation equipment manufacturers and the newly introduced "green electricity" mechanism are the unique advantages of Shanghai's plan to develop 1, roofs. Referring to the successful promotion experience of 1, roof projects in Germany and other countries, if there is more "sunshine policy" in Shanghai, roof power generation will no longer be a dream. [Edit this paragraph] Promoting solar roofs in Hangzhou In April 29, three color templates were displayed in the lobby on the first floor of Zhengtai Solar Technology Co., Ltd., Jiangling Road, Binjiang District. This is the first and second generation of thin film solar cells. The second generation of thin-film solar cells, like a glass curtain wall, are bright dark purple, which can be used to build power stations, and can also be used on the roofs of residential quarters or curtain walls of office buildings without affecting lighting. Under the background of global energy crisis, solar power generation represents a new direction of energy utilization. In the future, Hangzhou will start the solar "sunshine roof" plan in due course, and install solar thin films on the roofs of new residential quarters and public buildings.