Advantages and characteristics of the photovoltaic industry

Industrial advantages

1. Never run dry.

2. The geographical location requirements for collecting solar energy are not high; Relatively speaking, hydroelectric or wind power stations have higher requirements for geographical location.

3. The time and cost required to establish a solar power plant are lower than those of hydroelectric power plants.

4. The use of solar energy does not cause environmental pollution and is an ideal green energy source. However, the extraction of raw materials and the production of photovoltaic products also consume a large amount of energy and cause pollution.

5. Widely applicable, even ordinary households can use solar energy for power generation.

Therefore, in order to more effectively extract and use solar energy, countries around the world are constantly developing solar photovoltaic module technology and making the most of this "inexhaustible" energy source.

characteristic

Solar energy is the only source of energy that can guarantee human future needs. Photovoltaic power generation is a pure physical process that utilizes solar energy to convert photons into electrons, without emitting any harmful substances. Its characteristics are as follows:

Adequacy: According to a report by the US Department of Energy (April 2005), the world's potential hydropower resources are 4.6TW (1TW=1012W [5]), while economically exploitable resources are only 0.9TW; The actual exploitable resources of wind energy are 2-4TW; Biomass energy 3TW; The ocean can reach less than 2TW; Geothermal energy is approximately 12TW; The potential solar energy resources are 120000 TW, and the actual exploitable resources can reach up to 600 TW.

Security: reliable operation and safe use; Power generation has strong regularity and predictability (scheduling is easier than wind power generation).

Extensiveness: Rich production materials (silicon content in the crust ranks second), wide construction areas (deserts, buildings, etc.), and suitable scale. Maintenance free: Long service life (20-50 years, efficiency decreases by 20% after 25 years of operation), maintenance free, and unmanned.

Cleanliness: No fuel consumption, zero emissions, no noise, no pollution, and short energy recovery period (0.8-3.0 years).

Disadvantages:

1) The energy distribution density of irradiation is low, and the energy conversion efficiency is low, which requires occupying a huge ground area.

2) The electricity obtained is significantly influenced by weather conditions such as day and night, as well as cloudy, sunny, and foggy weather. 3) The manufacturing and production process of photovoltaic panels is characterized by high pollution and energy consumption.