National Energy Board: the whole county roof distributed photovoltaic development pilot work started, the government installation ratio of not less than 50%
Recently, the National Energy Board comprehensive department issued a notice on the submission of the whole county (city, district) rooftop distributed photovoltaic development pilot program. The notice points out that the whole county (city, district) roof distributed photovoltaic construction, is conducive to the integration of resources to achieve intensive development, is conducive to the elimination of power peak load, is conducive to saving and optimizing investment in the distribution network, is conducive to guiding residents to green energy consumption, is to achieve "carbon peak, carbon neutral" and rural revitalization of the two major national strategies. Measures.
According to the document, the pilot counties (cities and districts) should have abundant rooftop resources and good consumption capacity, and should meet the following requirements.
The proportion of photovoltaic power generation that can be installed on the total area of the roof of party and government buildings is not less than 50%; the proportion of photovoltaic power generation that can be installed on the total area of the roof of public buildings such as schools, hospitals and village committees is not less than 40%; the proportion of photovoltaic power generation that can be installed on the total area of the roof of industrial and commercial plants is not less than 30%; the proportion of photovoltaic power generation that can be installed on the total area of the roof of rural residents is not less than 20%.
Pilot program to serve the rural revitalization strategy, in July 15 before the new Energy Bureau reported to the Department of Energy.
The original article is as follows.
A perovskite solar cell (PSC) is a type of solar cell which includes a perovskite-structured compound, most commonly a hybrid organic-inorganic lead or tin halide-based material, as the light-harvesting active layer. Perovskite materials, such as methylammonium lead halides and all-inorganic cesium lead halide, are cheap to produce and simple to manufacture. Perovskites have inherent properties such as broad absorption spectrum, fast charge separation, long electron and hole transport distance, and long carrier separation lifetime, making them very promising solid-state solar cell materials.
A perovskite is any material with a crystal structure following the formula ABX3, which was first discovered as the mineral called perovskite, which consists of calcium titanium oxide (CaTiO3). Perovskites have a nearly cubic structure and the chemical formula is ABO3. Typically perovskite compounds have the chemical formula ABX3, where "A" and "B" represent cations and X is an anion bound to both. A large number of different elements can combine to form a perovskite structure. Using this compositional flexibility, scientists can design perovskite crystals with a variety of physical, optical, and electrical properties. Today, perovskite crystals are found in ultrasonic machines, memory chips and current solar cells.
Tandem solar cells are an important strategy to push the Shockley-Queisser (S-Q) efficiency limit of single-junction solar cells, it can be lower the cost per watt.