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Distributed solar photovoltaics (PV) are systems that typically are sited on rooftops, but have less than 1 megawatt of capacity. This solution replaces conventional electricity-generating technologies such as coal, oil, and natural gas power plants.

Distributed solar energy generation refers to the use of solar energy by households, enterprises, public institutions, and other small-scale power generation systems.

These systems typically use solar panels to convert solar energy into electrical energy for self-use or sale to the grid. Distributed solar energy generation systems have the following characteristics:

1、Small scale: The system has a small scale compared to traditional power plants, typically generating only a few kilowatts to hundreds of kilowatts of electricity.

2、Decentralized: The system is typically located close to the load it supplies, often on the roof or facade of a building, which avoids the high distribution losses associated with traditional centralized power generation and transmission.

3、Highly flexible: Distributed solar energy generation systems can be installed and operational quickly, with little impact on the surrounding environment. They can also be expanded or reduced in size as needed.

4、Environmental friendliness: Solar energy is a clean and renewable energy source that does not emit greenhouse gases or other pollutants during operation.

Distributed solar energy generation systems are becoming increasingly popular as the cost of solar panels and other components continues to fall, and as countries and companies around the world strive to increase their use of renewable energy.

In 1839, when a 19-year-old French Becquerel did a physical experiment, he found that when two metal electrodes in a conductive liquid were irradiated with light, the current would be strengthened, thus discovering the "photovoltaic effect";

In 1930, Lange first proposed to use the photovoltaic effect to make "solar cells" to turn solar energy into electricity;

In 1932, Audubote and Stola made the first "cadmium sulfide" solar cell;

In 1941, Orr discovered the photovoltaic effect on silicon; in May 1954, Bell Labs, Chapin, Fuller and Pearson in the United States issued a monocrystalline silicon solar cell with an efficiency of 6%, which was the first practical solar cell in the world. valuable solar cells. In the same year, Wicker first discovered that silver arsenide has photovoltaic effect and deposited cadmium sulfide film on glass to make solar cells. The practical photovoltaic power generation technology that converts sunlight energy into electric energy was born and developed.

The second satellite launched by the United States in 1958 was the first application of solar cells in space.

In 1960, solar cells were connected to the grid for the first time, marking the official entry of photovoltaic power generation into the grid, and it became an electrical energy that people can use every day.

In 1973, the University of Delaware built the world's first photovoltaic residence.

In 1984, commercial amorphous silicon solar cell modules came out.

Singfo Solar provides a complete set of household photovoltaic systems, including inverters, modules and energy storage batteries, all of which have passed TUV certification and are of safe and reliable quality.

When the sun shines onto a solar panel, energy from the sunlight is absorbed by the PV cells in the panel. This energy creates electrical charges that move in response to an internal electrical field in the cell, causing electricity to flow.

Greenhouse heating, heat preservation has been a key problem plaguing farmers, photovoltaic agricultural greenhouses are expected to solve this problem, due to the high temperature in the summer in the June-September months of many categories of vegetables can not be normal growth, and photovoltaic agricultural greenhouses, as in the agricultural greenhouses outside the addition of a spectrophotometer, which can be isolated from infrared rays, to prevent excessive heat into the greenhouses in the winter and the darkness of the night time and to prevent infrared wavelengths of light in the greenhouse to radiate outward to play the effect of heat preservation. In winter and at night, it can prevent the infrared band of light inside the greenhouse from radiating outward, and play a heat preservation effect. Photovoltaic agricultural greenhouses can supply the power needed for lighting in the agricultural greenhouses, and the remaining power can also be connected to the grid. In the off-grid form of photovoltaic greenhouses can be deployed with the LED system, daytime light blocking to ensure plant growth, while generating electricity. At night, the LED system applies daytime power to provide lighting. In fish ponds can also be erected photovoltaic arrays, ponds can continue to raise fish, photovoltaic arrays can also provide good shade for fish farming, a better solution to the development of new energy and a large number of land occupation of the contradiction, so the agricultural greenhouses and fish ponds can be installed distributed photovoltaic power generation system.

Distributed solar power generation specifically refers to a distributed solar power generation system that uses photovoltaic components to directly convert solar energy into electricity. It is a new type of power generation and energy utilization method with broad development prospects. It advocates the working principles of nearby power generation, nearby grid connection, nearby conversion, and nearby use. It can not only greatly increase the power generation of photovoltaic power plants of the same scale, but also effectively solve the problem of power loss during the process of boosting and long-distance transportation. In the past months, China has released many policies to promote photovoltaic industry development and encourage distributed solar power system installation in the countrysides.

The most widely used distributed solar power generation system is a solar power generation project built on the roof of urban buildings. Such projects must be connected to the public power grid, and together with the public power grid, supply power to nearby users. Therefore, which places are suitable for installing distributed solar power generation systems?

1.Industrial plants: The roof area of the industrial plant is large, and the roof is open and flat, especially in plants with relatively large electricity consumption and relatively expensive online purchases, which are suitable for installing photovoltaic arrays. Moreover, due to the large electricity load, distributed photovoltaics generate electricity that users need, thereby saving users' electricity bills.

2. Commercial buildings: There are always cement roofs in most commercial buildings, which are more conducive to installing photovoltaic arrays. However, users often have requirements for the aesthetics of buildings. According to the characteristics of commercial buildings, office buildings, hotels, conference centers and resorts, the user load is generally higher during the day and lower at night, which perfectly matches the characteristics of photovoltaic power generation.

3. Agricultural facilities: There are a large number of available roofs in rural areas, including self-owned residential roofs, vegetable greenhouses, fish ponds, etc. The rural areas are often at the end of the public power grid and therefore the electricity quality is poor. Hence, the installation of distributed photovoltaic power generation systems in rural areas can improve the electricity quality and guarantee villagers can use the electricity freely.

4. Municipal and other public buildings: Due to strict management and complete system, the commercial behavior are relatively reasonable, and many users are willing to install the distributed power generation system. Besides, municipal and other public buildings are also suitable for centralized and contiguous construction of distributed photovoltaics.

5. Remote agricultural and pastoral areas and islands: Due to the long distance from the power grid, there are still millions of people not able to use electricity in remote agricultural and pastoral areas in Tibet, Qinghai, Xinjiang, the Nei Monggol Autonomous Region, Gansu, Sichuan and other provinces, as well as coastal islands in China. Off-grid photovoltaic power generation system or the micro grid power generation system is very suitable to be install in these areas.

In the near future, there will definitely be more and more distributed solar power generation system in the world for its various advantages and long lifespan.

Building-integrated photovoltaics (BIPV) are dual-purpose: they serve as both the outer layer of a structure and generate electricity for on-site use or export to the grid. BIPV systems can provide savings in materials and electricity costs, reduce pollution, and add to the architectural appeal of a building. Though they can be added to a structure as a retrofit, the greatest value for BIPV systems is realized by including them in the initial building design. By substituting PV for standard materials during the initial construction, builders can reduce the incremental cost of PV systems and eliminate costs and design issues for separate mounting systems.

Building-integrated PV systems are planned during the architectural design stage and are added during initial construction. Building-added PV (BAPV) is planned and built during a retrofit. Both BIPV and BAPV lack the racks and mounting equipment of traditional PV systems. Most designers of integrated solar systems will consider a variety of solar technologies and their possible uses compared to the specific needs of building occupants. For example, semi-transparent thin-film PV can allow for natural day lighting and solar thermal systems can capture heat energy to generate hot water or provide space heating and cooling capacity.

Yes, solar power is a renewable and infinite energy source that creates no harmful greenhouse gas emissions – as long as the sun continues to shine, energy will be released.

The carbon footprint of solar panels is already quite small, as they last for over 25 years. Plus, the materials used in the panels are increasingly recycled, so the carbon footprint will continue to shrink.

Solar panels are usually made from silicon, or another semiconductor material installed in a metal panel frame with a glass casing. When this material is exposed to photons of sunlight (very small packets of energy) it releases electrons and produces an electric charge.

This PV charge creates an electric current (specifically, direct current or DC), which is captured by the wiring in solar panels. This DC electricity is then converted to alternating current (AC) by an inverter. AC is the type of electrical current used when you plug appliances into normal wall sockets.