The hottest potential of Dutch solar energy is yet

The potential of solar energy in the Netherlands has yet to be developed, waiting for technological breakthroughs

local friends in the Netherlands once told us that the weather forecast in the Netherlands can be basically simplified into two types - rain, or there may be rain. For such a small Western European country with half facing the sea, a quarter of the land below sea level and dotted with lakes and rivers, sunshine is particularly luxurious

however, as the world's tenth largest economy in terms of per capita GDP, sunshine has other meanings for the Netherlands. Over the years, the Netherlands has vigorously developed solar photovoltaic power generation as a supplement to traditional fossil energy, which has brought light and warmth to thousands of households and provided an inexhaustible driving force for the development of the national economy

the application of solar photovoltaic power generation has already become a reality in the Netherlands. However, due to the limitations of industrial policies, technical conditions and other factors, the road of developing solar photovoltaic power generation in the Netherlands is not smooth, and there is still a distance between reality and ideal

less than an hour's drive north from Amsterdam, the capital of the Netherlands, arrived at the small town of hirschhoward. In the south of the town, there is a community with solar panels on the roofs of every household - "Sun City", which is the world's leading community with zero carbon dioxide emissions

when you walk into the community, you will first see residential buildings with different styles, and the most striking thing is the sheets of solar panels on the top of the building. The birth of "Sun City" is due to the implementation of the EU plan for carbon dioxide emission reduction and sustainable development. Helsh Howard City Hall official Rhine? Melema told: "the dream of the world has become a reality here. This community with 1500 houses and 4000 residents has achieved zero carbon dioxide emissions." 50000 square meters of solar panels can provide 2.45 megawatts of electricity every year, and the power generation capacity of each of the surrounding three windmills is also 2 to 3 megawatts. In order to get more sunshine, 80% of the houses in "Sun City" face north-south. The houses in "Sun City" also adopt energy-saving building materials and energy-saving insulation systems, including special geothermal heating systems

melema said that the zero emission concept of "Solar City" refers to the net emission of zero, that is, the carbon dioxide emissions minus the emissions avoided due to the use of renewable energy, and the final value is zero. The performance of houses here in energy consumption indicators is twice as good as that required by EU building standards

solar houses are expensive, generally between 200000 euros and 500000 euros, but living in such houses, energy is cheaper. Mrs. mirzer, a family of five, has just moved here. She is particularly proud of her solar house. "You can see that there are many solar panels on our roof, and half of the energy we use comes from these solar panels." Mirzer said

a new energy also means a new way of life. Resident fan Taiping Life insurance related person introduction? Mrs. NSAD said: "We have two electricity meters, one of which is a solar energy meter, and the other is an ordinary electricity meter. The solar panel on our roof starts working every morning until about 7 p.m., during which time any electrical appliances we use are free. We can also store the excess electricity generated by solar energy into the public power supply system, and by the end of the year, we can calculate that our solar hut will produce for the public power supply system How much electricity has been generated, and thus a sum of income. "

"Sun City" is a young city, where many young people and children live. For renewable energy such as solar energy and wind energy close to life, II. Cement Fineness Test Method (80 μ M sieve analysis) GB 1345 ⑼ 1 the environment of zero carbon oxide emission is making them form new living habits. In the "Sun City", I really feel that people and the environment can be so harmonious

it is still an energy "supporting role"

in addition to the geographical factors suitable for wind power generation in the Netherlands, many scholars believe that what is more important is the insufficient government support for solar power generation and the high cost of solar power generation under the existing technical conditions

in 2007, the Dutch government began to implement the renewable energy subsidy policy, and implemented direct subsidies and tax reduction subsidies for all enterprises using renewable energy. However, since 2011, the Dutch government has adjusted its policy and set a subsidy ceiling of 1.5 billion euros. The result of this adjustment is that the application of wind energy has been more stimulated

"the upper limit of government subsidies has virtually created a 'first come, first served' system. In the view of many enterprises, using wind power generation is more profitable and can get more government subsidies." Cinke said

Michael from Delft University of technology? Sayer analyzed that for consumers, if they invest in buying solar panels now, they should not only bear the risk of whether the expected service life of 20 years can be achieved, but also bear the risk of price decline caused by new technologies. Onshore wind power also sends a clear signal to us that we need to find more reliable and environmentally friendly materials to replace power. The price has been very close to the traditional electricity price, so wind power generation is more favored at present

in other words, under the effect of market mechanism, the high price and cost make the development of solar energy still rugged

potential may be stimulated soon

solar power generation must achieve real technological breakthroughs to reduce prices in order to win more markets

according to the research members of the "solar road" project team of the Dutch Academy of Applied Sciences, this day will not be too far away. They plan to lay solar panels on ordinary roads and establish an efficient and cheap energy supply system. De Witt, the head of the project team, said that the sunlight is very divergent, so a large light receiving surface is needed to collect energy. Compared with the existing practice of placing solar panels on the roof, roads may be a better choice, because the road area in the Netherlands is twice the roof area

although researchers have solved many problems, there is still a huge challenge: in order to obtain more sunlight, the more transparent the road is, the better. However, the more transparent it means the smoother it is. Insufficient road resistance will cause many safety hazards. Researchers are currently testing the friction and hardness parameters of various glasses, and will start experimental road laying in 2013

it is estimated that the paved solar roads can generate about 50 kwh of electricity per square meter per year, and the average annual power consumption of each family in the Netherlands is about 3500 kwh, which means that 70 square meters of solar roads are needed to meet the power consumption of a family

in addition, another research result published in February this year may also shorten the distance between reality and ideal. According to the new research results, scientists have designed a special nano coating. The nanoparticles in the coating are cylindrical structures, and the geometric dimensions of these cylinders are just suitable for capturing sunlight. Scientists from the Netherlands Institute of atomic and molecular physics said that the silicon wafer used in the existing solar cell panels has a solar reflectivity of up to 40%, which seriously affects the efficiency of solar cells. The new research results will effectively solve this problem. Thanks to a new "printing" technology developed by Philips, it is also possible to "print" this nano coating directly onto the silicon wafer of existing solar photovoltaic cells. This means that the efficiency of solar photovoltaic panels is expected to be significantly improved, and the cost of power generation will also be greatly reduced

de Witt said: "at present, the cost of solar photovoltaic power generation is indeed very expensive. But I think things are changing rapidly, and the cost will fall soon. I firmly believe that in the future, solar photovoltaic power generation will become an important part of the energy supply system to select and adjust zero and load experimental power."