The production of solar panels has the characteristics of high pollution and high energy consumption. Under the existing conditions, the production of the battery board used in China is also said to be in the past, but a large number of exports are equal to pollution of China and benefit the world. According to statistics, the production of a 1m x 1.5m solar panel must burn more than 40 kilograms of coal, but even China The most inefficient thermal power plants can also use these coal to produce 130 kilowatt hours of electricity (the average 1mx1.6m solar panel generates more than 250 kwh a year) - enough for a 2.2 watt LED light bulb to calculate for 30 years for 12 hours a day.
(1) the energy distribution density of irradiation is small, that is, to occupy large area.
2. The energy obtained is related to meteorological conditions such as seasons, days and nights, and cloudy weather.
(3) relative to thermal power generation, the opportunity cost of generating electricity is high.
(4) the process of manufacturing photovoltaic panels is not environmentally friendly.