Top 10 countries to exploit solar power in the world

Solar electricity is still one of the most important 'second, second, and third' renewable electricity sources on Earth, besides hydroelectric and wind power.

>>>The era of solar power

From solar rays to electricity

Light sources and heat sources or renewable energy sources, in general, emanate from the Sun almost endlessly. This source is caused by fusion fusion occurring in the Sun and by the end of the "fuel" it is still about a billion years away! The Earth, receiving only a tiny fraction of the total solar energy emitted. Next, about 30% of the solar energy reaching the earth is reflected back into space, another part is absorbed by atmospheric clouds, by the water in the oceans and soil layers. Earth surface.

However, the "extremely small" part left for the needs of the whole human being is also a very large number. And now solar power is still one of the most important 'second, second, and third' renewable electricity sources on Earth, besides hydroelectric and wind power. In the past, people used solar energy in various non-electric ways, which are very diverse and simple, such as cooking, heating and cooling and complex as making balloons, storing heat by normal salt or molten salt, etc. Estimated average annual non-electricity mining energy; in 2007, for example, 150 - 200 Gigawatt (GW) was 200 billion watts.

But the most important application today and in the future is still producing electricity. Here, two types of solar power production technology are widely developed, namely: Technology for converging CSP solar (concentrated solar power) and SPV photovoltaic technology (Solar Photovoltaic).

In CSP Technology , also known as STE solar thermal technology (Solar thermal energy), uses a multi-lens system, reflectors and tracking systems to focus sunlight from an area large into a small area. Here, water or other special liquids contained in tanks or pipes are heated up to several tens of degrees (used, such as pool heating, providing warm water for households, saved store room energy in the absence of a bright sun), up to several hundred degrees (forming strong steam currents that turn turbines to produce electricity).

In SPV technology , sunlight energy is converted into electric current, thanks to the photoelectric effect, through photovoltaic cells or tiny solar cells. Small batteries are assembled into large solar panels. These large panels are assembled together into modules or ranges. Initially, solar panels were used for artificial satellites or spacecraft, but now in many countries are widely used in industry and civil. Solar power plants use the convergence technology of CSP or SPV photovoltaic technology, or combine both technologies that have appeared in many countries.

Top 10 countries solar power

The number of countries in the world participating in the exploitation of solar energy, especially to produce electricity increases every year. And the total power capacity in some countries increased rapidly, squeezing the high ones, the top 5; top 10 . The data table included in this article is: The ranking of the top 10 countries , based on the data of total power production by SPV technology of the countries gathered until the end of the year 2013. Comparing with the 2010 rankings, only 1 in 10 countries have been replaced, in particular Australia has jumped into the new list and pushed India (last in the 2010 rankings) out of TOP TEN this time.

Ordered tables of 10 countries worldwide have the largest total solar power capacity.

Graph 1: Growth of total solar electricity year by year.

Graph 2: The situation of building solar photovoltaic plants in the years 2001-2015.

Germany still stands at No. 1 and keeps the share of total solar power capacity three times greater than the second largest. And with the 2013 rankings, big countries Germany, Italy, China, Japan and the US now have The top 5 countries all have absolute growth of total solar power output, 2013 compared to 2010, very high. Italy increased 17 times, America - 7 times, China - 6 times, Japan - 4.5 times and Germany - 3.6 times.

On the world's solar power growth momentum, on the first graph, the growth of the total solar power output will be introduced each year, from 1995 to 2013. Obviously, in the last 5 years, Growth momentum is very fast, nearly 15 times. On the second graph shows the role of solar power in the power industry in countries.

The world situation motivates Vietnam to have a comprehensive investment policy to develop the country's electricity industry. In addition to the development of gas and nuclear power, there is no reasonable policy for renewable energy use, first of all wind and solar power.