Solar photovoltaic power generation from where, how wide it is?

Solar roofs are respectively mounted on each independent residential building grid photovoltaic power generation systems. At present, solar roof in the city still can draw lessons from experience, and rural solar roof in our country still is very little, how large area promotion, worth into

solar roof is a grid photovoltaic power generation system, can be installed on each individual residential buildings. At present, the city of solar roofs are still can be drawn lessons from experience, and China's rural solar roofs were rare. How to popularized in large area, deserves further research and discussion. North China rural population intensive, electricity demand is big, long light, high strength. After the reform and opening up of China, the building belongs to the third and fourth generation of migrant workers. Most of the house of good quality, relatively large living space. With the improvement of living standards of rural areas, their electricity consumption increases year by year. However, the cost of solar technology continuous improvement and construction of falling for the implementation of the rural solar project provides the necessary conditions. Natural villages in the density of northern China, including henan, hebei, shandong, Shanxi Province, has a population of 400 million rural and about 80 million families. Photovoltaic roof area of about 4 billion square meters, available solar roof project scope of 0 +. A large number of rural scattered in the villages and towns in the north of China. These villages is not only the densely populated, but with the growth of the population, are increasingly linked to each other. Dense villages development means that you can use more solar roofs. According to preliminary calculations, according to the size of roof natural villages in north China can build a total installed capacity of 10 mw of solar photovoltaic power station. It can be seen that the density of natural villages in rural areas the implementation of solar roof engineering of natural conditions. Available area estimation in northern China rural residential area is basically a bungalow. Most of the roof using traditional sloping roofs. Housing wall brick, for most of the bearing capacity is good. The roof to the brick structure, carrying capacity is strong. The service life of buildings generally in more than 20 years. The yard there are quite a lot of unused area, also can be used. Roof area: the main body of rural courtyard houses for 4 - commonly 5 bungalow, north and south, about 12 meters to 20 meters long, about 6 meters wide. Therefore, front roof area to a rough estimate of 48 m2 ~ 60 m2, an average of 54 m2. According to a natural villages, 100 households computing ( Field investigation of the mean) , the use of roof covers an area of 5400 m2. Courtyard spare area computation: suppose each courtyard have 10 m2 of available spare area, a natural villages can increase the area of 1000 m2, so a natural villages of total available installation area about 6400 m2. Hypothesis to build a total installed capacity of 10 mw photovoltaic field need 42600 m2, 6 - it can cover Eight natural villages. In fact, these villages are connected, the distance between the village is very short, provides convenience to build solar roofs. Although there are differences between the rural courtyard area, but the basic similar, so the estimated basic conform to the actual situation.