Building photovoltaic power plants in tropical regions have what advantage?

Photovoltaic power station cannot leave it is light, many people may ask, can say the longest sunlight in the tropics? So building photovoltaic power station in the tropics generation have an advantage? The specific situation? In the tropics, the sense that gives a person is

photovoltaic power plants cannot be separated from the light. Many people may ask, can say has the longest tropical sunshine time? Building photovoltaic power plants in tropical regions have what advantage? What is the detail? The tropics, the sense that gives a person is strong sunlight, plenty of sunshine. It looks like a photovoltaic (pv) paradise. Is it true? However, this is not the case! I believe that many readers are aware and understanding, so I will briefly summarize why the tropics of photovoltaic power generation is not so ideal. High temperature, of course, is very hot in the tropics. The annual average temperature above 20 ℃ is often the case. Photovoltaic modules is a kind of can't stand the heat. With the increase of temperature, the photoelectric conversion efficiency is declining, the power is in commonly - temperature coefficient 0. About 4% / ℃. At this point, common in China by 2% and 3% of the temperature in the tropics can be directly doubled, 7% and 8% are common, and can't be more than 10%, this will have a big impact on final power generation. Low latitude tropical latitudes, the corresponding optimal dip Angle is low, which makes the rake face/horizontal plane total radiation in the tropics than is very small, so as to narrow the gap with other parts of the radiation in the tropics. For example, according to meteorological data, Singapore total radiation level of about 1635 KWH / ㎡, and shanxi in the same year total radiation level of about 1481 KWH / ㎡. Singapore's radiation situation seems to be better than the shanxi datong. In Singapore, however, latitude is 1. 37, local slope/horizontal plane total radiation than about equal to 1, namely Singapore's best cant radiation also basically equal to 1635 KWH/m2. However, the latitude of datong, shanxi is 40. 1, the ratio of the rake face/local level surface total radiation of about 1. 20, that is, the best radiation rake face in mountain areas of datong 1775 kilowatt-hours per square meter. Shanxi datong area, on the other hand, more than the total radiation tropical Singapore, power generation capacity is higher than Singapore. As a result, people can not blindly believe in the tropics of photovoltaic power generation has great advantages. Of course, although there is no advantage in the tropics power generation, but in other parts of tropical building photovoltaic still has some advantages, such as one of the most obvious small footprint.