advantages
Either from the perspective of the world or from the Chinese conventional energy is limited. China's primary energy reserves far below the world average, only about 10% of the world's total reserves. Solar energy is inexhaustible renewable energy, has fully clean, absolute security, relative universality, really long life and free maintenance, the adequacy of resources and potential economic advantages, has the important status in the long-term energy strategy.
Compared with the commonly used thermal power system, the advantages of photovoltaic power generation mainly reflects in:
1) no depleted danger;
(2) safe and reliable, no noise, no pollution emission, absolutely clean (pollution-free);
(3) is not restricted by resource distribution area, can use the advantage of building roof; For example, without electricity, and the complex terrain region;
(4) without consuming fuel and erection of transmission lines in power generation power supply;
(5) energy high quality;
6. Users from emotionally acceptable;
All landowners short construction cycle, energy costs for time is short.
disadvantages
However, production of solar panels is has the characteristics of high pollution, high energy consumption, under the existing conditions, the use of domestic produced panels also said in the past, but a large number of export is equal to the pollution in China, for the benefit of the world, according to statistics, in the production of a 1 m by 1.5 m solar panels must burn more than 40 kg of coal, but even if China's most inefficient coal-fired power plant can also use the coal production 130 kilowatt-hours of electricity - enough to make 2.2 watts of light emitting diode (LED) light bulb glow calculated according to working 12 hours a day for 30 years. And a solar panel design life of only 20 years.
1) light energy distribution density is small, namely to occupy large area;
(2) the energy with the four seasons, day and night, rain or shine related meteorological conditions, etc.
(3) the relative to thermal power, power generation opportunity cost is high.
(4) photovoltaic panels in the manufacturing process is not environmental protection.