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Solar energy will play a major role in Germany's energy system in the future

on May 25, 2012, Germany set a new world record for solar photovoltaic power generation. On this day, the domestic solar power generation in Germany reached 22.4 million kwh, which met 30% of the total power demand, equivalent to the power generation of 20 large-scale traditional thermal power stations or nuclear power stations

no country is more enthusiastic about the development and construction of solar energy than Germany. Thanks to the support of the German government to expand renewable energy development policies, the proportion of solar power generation in German electricity demand has gradually increased. 1.2 million photovoltaic power generation systems have generated a total of about 14.7 billion kwh of electricity

"no country has ever been able to do this and hit the experimental point from the second data, but I believe that this is only a small step in the development of solar energy in Germany." Norbertallnoch, director of the renewable energy research center in Munich, said

"the development of solar photovoltaic power generation itself has become the driving factor of energy change in Germany." Kasten, CEO of bswsolar, said. In his view, solar energy will play a major role in Germany's energy system in the future

however, this energy revolution is not free. Although Germans enthusiastically develop solar energy, with the further increase of costs, how many people can benefit from it

reform of the German energy system

in the vabang community in Freiburg, Germany, the local houses are arranged neatly like matchboxes, but what is more noteworthy is the solar panels on the roof of each household. In the bright sunshine, these panels have become the most dazzling signs of the local community

in addition to residential buildings, almost all local public buildings are also equipped with solar panels. Residents call these solar panels "sunflower houses". These solar energy are not for residents' own use, but returned to the urban power supply system. In addition to the corresponding subsidies given by the government for the installation of solar panels, each household can earn 6000 euros a year from "selling electricity"

at present, in Germany, not only single houses, collective houses, low rent houses, or multi family apartments can also use solar energy. More and more regions and households have solar panels, which provide 20% of renewable energy power generation for the whole country

as early as January 1999, Germany implemented the "100000 solar roof plan" nationwide. The goal of this plan is to install 100000 photovoltaic roof systems by the end of 2003, with a total capacity of 10000 kW, that is, kW per roof

in order to promote and ensure the implementation of the new energy plan with photovoltaic energy as the core content, the German government issued the first renewable energy law in 2000. This Law guarantees that residents and enterprises who purchase and use photovoltaic power generation energy will receive a refund of DEM 0.99 (EUR 0.56)/kwh. At the same time, the federalministryofeconomics technology of Germany also provided a total financial budget of about 460million euros for the "100000 solar roof plan"

the introduction of the first renewable energy law has played a huge role in promoting the solar photovoltaic power generation industry in Germany

the subsidy policy of the government has made the solar energy industry in Germany very promising. According to German media reports, since 2006, Germany has been firmly in the leading position in the world in terms of the total installed capacity of photovoltaic power generation. In the future, the German government will continue to reduce subsidies for the installation of solar photovoltaic devices and the electricity price of solar energy on the existing basis

solar power generation is not as unstable as the traditional view and the guidance of the media think. In the leading week of May 2012 alone, German solar energy produced 780million kwh of electricity. By the end of May, that is, the record week, the power generation reached 1.096 billion kwh, almost meeting 12% of the total electricity demand of Germany in that week

according to the current development trend, the share of solar energy in the German energy industry is expected to continue to double, jumping from 3.2% in 2011 to about 7% in 2016

the world's largest solar power station

benefits from domestic development, and Germany has also promoted its solar energy plan overseas

as early as 2009, 20 large German enterprise groups, including Munich reinsurance group, Siemens, Deutsche Bank and RWE energy, jointly formed an international consortium with the goal of building the world's largest solar power station in the desert of North Africa

this project, called Desertec, will use the rich local solar energy resources to realize the dream of supplying power to all Europe. It is reported that Desertec plans to supply about 15% of Europe's electricity, and the first batch of electricity is expected to be exported to Europe in 2019

according to the South German newspaper, these 20 companies will raise 400billion euros. The newspaper said that the spokesman of Siemens in Germany, one of the consortiums, said that this is an "extremely exciting plan". If the plan is fully realized, it will generate 100billion watts of electricity, equivalent to the sum of the power generation of 100 home appliance plants

yevorek, head of Munich reinsurance group, said that it is technically feasible to build giant solar power stations in the desert. Solar power stations have been built in the desert of California and Spain. The solar energy is concentrated by using the solar energy concentrating plate, and then the special oil is heated, which is converted into hot steam and drives the turbine to generate electricity. This principle is different from the direct current generation of photovoltaic devices, but it can provide more stable and powerful power

the power transmission in the Desertec plan will adopt HVDC technology, which can reduce the loss of power in the transmission process to less than 10%. The whole power transmission project will cross the Mediterranean Sea, and the main lines will cross the Strait of Gibraltar, from Morocco to Spain, via the Balearic Islands, from Algeria to France, Tunisia to Italy, Libya to Greece, via Cyprus, and from Egypt to Turkey. In addition, the Desertec plan also includes the construction of a European super power with a wider coverage, including wind turbine power in the North Sea, hydropower in Scandinavia, geothermal power in Iceland, bioenergy power in Eastern Europe and solar power. This will increase enough clean energy for Europe

the growth of solar energy is overheating

in the view of many enthusiastic solar supporters, according to this speed of development, Germany may be able to make the world enter the sustainable development of energy earlier than the expected schedule of 30 to 70 years. Dow winhop technology said in an institutional survey that it is on the way

in terms of energy system reform, the current solar energy system in Germany has dealt a heavy blow to the traditional energy system in terms of price. The local hybrid power of wind energy, biomass energy and solar energy can provide energy to citizens and regional industries hundreds of meters away at a lower price than the power generated by burning coal or uranium

common faults in Germany 5: it is not a country with abundant solar energy resources. The average annual sunshine time in Germany is 1528 hours, only about half of that in Spain. However, even on cloudy days, the power produced by rooftop photovoltaic power generation system can be comparable to that of traditional energy systems. In addition, photovoltaic power generation has been shown to significantly reduce electricity prices during peak hours. However, at present, compared with every family and individual, enterprises benefit more from the development of solar photovoltaic power generation, because these power generation will directly enter the electricity of the city

the sustained and rapid growth of photovoltaic power generation industry has also led to a series of problems, such as the rapid growth of terminal electricity price, the increasing pressure of electricity upgrading and transformation, and some problems have also pushed up the cost of economic and social development in Germany

at the same time, due to the centralized distribution and large scale of photovoltaic power generation in Germany, which has a great impact on the safe and stable operation of distribution, the phenomenon of distribution congestion is very serious at noon peak hours, and the insufficient capacity of distribution to accept distributed photovoltaic power generation has become an important constraint to the development of photovoltaic power generation industry in Germany

for this reason, the plan of the German Ministry of environment is to control the annual new installed capacity of solar PV between 2.5 million KW and 3.5 million KW, and reduce solar subsidies month by month, but the annual reduction rate is not more than 24%

at present, Germany adopts the renewable energy cost sharing system, that is, the renewable energy price subsidy is shared by power users. In 2006, the cost shared by German power users for renewable energy power generation was about 0.4 euro cents/kWh, one third of which was used to subsidize photovoltaic power generation. The Renewable Energy Law 2008 revised in 2008 has significantly reduced the price of photovoltaic power generation by tightening the screw cap. The newly issued renewable energy law in 2012 will reduce the price of photovoltaic power generation again, so as to control the excessive growth of photovoltaic power generation. Zhonghua glass () Department

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