What is a Solar Energy Plant?

A solar power plant is a plant that uses renewable energy to generate electricity. It uses photovoltaic technology that converts solar energy into electricity and works through a power generation system. There are two basic modes of solar power generation: solar photovoltaic power generation and solar thermal power generation.

Solar energy is one of the main energy sources in the world. China is one of the countries with abundant solar energy resources. Solar energy is the most primitive energy source, and almost all other energy sources on the planet come directly or indirectly from solar energy. Solar energy has the advantages of sufficient resources, long life, wide distribution, safety, cleanness, and reliable technology. Because solar energy can be converted into many other forms of energy, it has a wide range of applications.

The method of generating electricity by converting solar radiant energy into electricity through water or other working fluids and devices is called solar thermal power generation. The current promising solar thermal power generation systems in the world can be roughly divided into: trough-shaped parabolic focusing systems, central receivers or solar tower focusing systems, and disc-shaped parabolic focusing systems.

working principle

Solar photovoltaic power generation system is used to

Germany

Bavaria to build large solar farm

Germany, the world's leading solar power technology, built a large-scale solar power plant in Arnstein, in the Bavarian region of Franconia, with a power generation capacity of 12.4 MW, which can simultaneously meet the electricity needs of 3500 homes.

The solar power plant covers an area of 77 hectares and will have 1,500 solar power installations. It was jointly planned by two private companies, and when completed it will generate more than twice the current world's largest 5 MW wind power plant. The two companies plan to raise 75 million euros to build the site entirely through private purchases. Individuals need to invest 14,400 euros to purchase a solar power installation. According to the survey, this new way of raising funds to build solar power plants has broad development prospects in Germany.

Modern science and technology for the production of renewable energy has always been popular in Germany. The German Ministry of the Environment commissioned the country's Forsa market survey agency to conduct a survey in early May 2005. The survey results showed that nearly 62% of Germans believed that investment in renewable energy should be increased. The majority of respondents support the use of wind power and agree to work towards achieving it over the next 20 to 25 years. With offshore wind power stations, 15% of the country's electricity needs can be met.

In the next 20 to 30 years, solar energy is another energy source that will gain considerable development. The survey results also show that 85% of the German population regards solar energy as an ideal alternative to traditional energy sources.

Japan

Self-generated electricity can also be sold to the government

The outbreak of the first oil crisis in 1973 had a major impact on Japan. The oil crisis ended the era of rapid economic growth in Japan. Since then, the Japanese government has advocated energy conservation, strengthened the development of new energy sources, relaxed energy restrictions, vigorously developed new energy sources, and adopted solar energy, wind energy, fuel cells, hydrogen energy, and superconducting energy. Japan is striving for multi-angle and comprehensive energy security measures. Through these efforts, Japan is protecting the environment and building a new level of sustainable society. In the research and development of alternative energy and energy-saving technologies, Japan is willing to invest in trying to ensure the commanding heights of future energy technology, launching the "New Sunshine Plan", which allocates more than 57 billion yen each year to research renewable energy technologies, energy transmission and storage technologies, and so on.

Solar power is very popular in Japan. In terms of households, the difficulty with the popularization of solar power is that the cost is very high. Whether the cost of purchasing a solar power generation device is more cost-effective than the cost of electricity is not possible before. At that time, it was difficult to sell solar power generation devices. It was because of the small number of solar power generation devices that they could not be mass-produced.

Now, the family purchases this device at half the cost of subsidized by the government, so now more and more are sold, and the price has dropped accordingly. It is understood that 10 years ago, the price of 3 kilowatts of power generation equipment in Japan was about 6 million yen, which is enough to pay decades of electricity bills, and the market price is now halved. Converted into RMB, it dropped from about 400,000 yuan to about 200,000 yuan.

There is also a unique advantage of using solar power generation devices in Japan: instead of using electricity during the day, electricity is sold to power companies or the government, and the latter is also actively buying, so that the income obtained can be used to offset part of the electricity bill. According to statistical data, we can see an interesting situation-in households that have popularized solar power generation devices, the power saving work has done better ^[7] .

After years of hard work, Japan has become one of the most energy-efficient countries in the world (2.75 times the United States). Japan's solar energy technology leads the world. In 2002, Japan's solar power generation accounted for 46% of the global total.

Korea

The world's largest solar power plant will be built in 2006

The South Korean government of Jeollanam-do recently said that they will build the world's largest solar power plant with American companies in April, generating 17 megawatts of electricity per hour.

The power generation of this power plant far exceeds the 5 megawatts per hour of the same type of power plants in Germany. It is currently the world's largest solar power plant.

Earlier, the Jeollanam-do government reached a project agreement with the US-owned Kore Group, which injected $ 150 million in foreign capital.

The agreement is based on a 2004 memorandum of understanding (MOU) between the regional government and US companies to build a solar power plant in Mokpo, the Korean peninsula. The MOU made clear that the Kore Group is funding and monitoring the project.

Israel

Legislation promotes solar development

As we all know, Israel is a country with sufficient sunshine and good solar energy resources. In the research and development of solar energy utilization technology, not only has it been highly valued by government departments, research institutions and enterprises, but it has also cooperated with the United States, Europe, Australia, etc. Countries and regions have extensive cooperative relations, so that Israel has always been a world leader in this field.

The world's largest solar power plant covering 1,000 acres and generating 500,000 kilowatts of power will be built in the Negev Desert in southern Israel. The first-phase power generation capacity of the solar power plant will reach 100,000 kilowatts. By the time the project is fully completed in 2012, the power generation capacity will reach 500,000 kilowatts, and the power generation will account for about 5% of the national electricity production. For a long time, Israel has always attached importance to the research and development of solar energy technology. Well-known domestic research institutions have achieved many important results in the field of solar energy development technology, so that Israel maintains a world-leading level in the development and utilization of solar energy technology. However, the high cost of solar power generation has greatly restricted the development and utilization of solar power in Israel. This plant is Israel's first solar power plant.

Israel, which lacks conventional energy, is the only country that requires solar water heaters for civil buildings. Therefore, the penetration rate of solar water heaters in Israel is as high as 90%, and the per capita area of solar water heaters ranks first in the world.

Desert energy

According to reports, EU scientists recently proposed the establishment of a solar power plant in the Sahara Desert in Africa. The main reason is that the desert area is abundant in sunlight, and the solar power generation efficiency is three times stronger than that in Northern Europe. The entire plan will supply about 35.7 billion pounds of electricity for the entire European electricity demand, and the area of building a solar power plant in the desert is close to the area of Wales in the United Kingdom. Although the European market is subject to fluctuating demand due to different solar energy subsidies in various countries, EU scientists have recently proposed that another wave of demand is expected to be created. EU scientists propose to spend 35.7 billion pounds to build solar power plants in the African Sahara Desert. It is estimated that It can supply the electricity needed throughout Europe, and the proposal is supported by British Prime Minister Brown and French Prime Minister Nicolas Sarkozy.

Scientists estimate that if the plan is implemented quickly, it is estimated that the power plant will generate 100 billion watts (100GWp) of electricity by 2050, and the cost of cables from North Africa to the whole of Europe is estimated to be about 1 billion euros in the next 40 years. Combined with British and Danish wind power, Iceland and Italy geothermal power generation, the endless clean renewable energy power network throughout Europe, the proposal also received the support of British Prime Minister Brown and French Prime Minister Sacchi.

The solar industry said that, rather than relying on different subsidy policies from European governments and considering different sun exposure issues, the establishment of solar power plants in the Sahara Desert can quickly implement the solution of traditional energy shortages and rising costs. If the proposal is adopted, Global solar industry players are expected to benefit again because of demand. For example, Moody, Yitong and Yujing, which are deeply cultivated in the European market, are expected to quickly feel the demand.

The European market, which dominates most of the global demand for solar photovoltaics, although the first wave of preferential subsidies in Spain ended in September 2008, and Germany began to adjust the subsidy from 5% to 8% in 2009, making the market demand for the European market There are doubts, but Switzerland has recently begun to subsidize renewable energy electricity, like Germany, France and Spain, for a period of 20-25 years, and plans to review the implementation every 5 years ^[8] .