Building aMWsolar power plant costs about 10 yuan. How many kilowatt hours of electricity can be produced each year? 120 kilowatt hours of electricity.
If the efficiency of the photovoltaic power plant system is within a reasonable range, taking the Beijing area as an example: the annual use of each kilowatt is about 1,200 hours , then the actual annual electricity production of 1 MW is approximately 1200 H*1000 KW = 1.2 million expenses.
Example
Shanghai Shenergy Company invested 65 million yuan to build a 1 MW solar power plant. The theoretical electricity production value of a 1 MW power plant is 1,000 kilowatt hours per hour.
It produces electricity 6 hours per day. 6000X365=2190000 kWh.
Approximately how many solar power plants are there in China?
By August 2021, the price will be 4 to 5yuan per meter.
The installation cost of photovoltaic power generation is mainly the cost of equipment, including: photovoltaic modules account for about 49% of the total investment, inverters and other electrical equipment accounts for about 10%, cables and slices each account for about 10%, and different photovoltaic installation companies have their own pricing standards.
Installation capacity varies greatly depending on component capacity and installation angle used. Generally speaking, each kilowatt of photovoltaic power generation system can generate four kilowatt hours of electricity per day and requires an installation area of 10 square meters. If the installation scale is 3-5kW, the investment cost will be about 30,000-50,000 yuan.
Precautions for photovoltaic solar power generation
PoOn photovoltaic power generation systems that operate for a long time, the impact of dust accumulation on the panels cannot be underestimated. The dust on the surface of the panel has the function of reflecting, scattering and absorbing solar radiation, which can reduce the transmission of the sun, causing the panel to receive less solar radiation and reduce the output power. Its effect is proportional to the accumulated thickness. dust.
At the same time, other parts of the photovoltaic panel will also be corroded by wet dust, such as joints, brackets and other parts. Most materials are various types of metals. Corrosion can easily result. damage, weakened security and other problems, which may be damaged by natural factors such as strong winds and earthquakes, thereby reducing the lifespan of photo panels.oltaic.
China has 7 solar power plants. Solar energy is divided into photovoltaic power generation and photothermal power generation.
Photovoltaic power plants: Shanghai Chongming (1MW), Inner Mongolia Ordos (25KW), Gansu Dunhuang (10MW), Qaidam Basin (1GW), Sichuan Xichang (10MW)
< p>Photothermal energy stations: Nanjing Jiangning (7KW), Beijing Yanqing (10MW)Solar energy refers to the energy of thermal radiation from the sun (see the three modes of energy transmission thermal). Nowadays, it is typically used to generate electricity or provide energy for water heaters. Since the birth of life on Earth, it has survived primarily on thermal radiation energy provided by the sun. Humans also know how to use sunlight to dry objects and use it as a method of making food , for example to preparer salt and dry salted fish. With the decline of fossil fuels, solar energy has become a significant part of human energy consumption and continues to grow. There are two ways to use solar energy: photothermal conversion and photoelectric conversion. Solar power generation is an emerging renewable energy source. Solar energy in a broad sense also includes wind energy, chemical energy, hydropower, etc. on earth.