At this stage, the energy reserves of oil and natural gas on the earth are constantly decreasing. Although the development and collection technology is relatively mature, the development cost is still relatively high. As a green and sustainable energy source with zero emissions and zero pollution, solar energy can save mining costs. Many, vigorously promoting and using photovoltaic power generation is of great significance for the realization of my country's vision of "2030 carbon peak and 2060 carbon neutrality". Therefore, in the 14th Five-Year Plan, the state clearly stated that it will vigorously promote green and clean energy, and rural household photovoltaic power generation has also begun to be valued by more and more people.
As far as the country is concerned, in order to implement China's energy-saving and emission-reduction goals promised to the world, and strengthen policies to support the new energy economic strategy, relevant national ministries and commissions have launched a solar roof plan. Use solar photovoltaic technology to generate power in urban and rural buildings to achieve energy conservation and emission reduction goals. The reason why the country should vigorously develop photovoltaic power generation for rural households is mainly because photovoltaic products are very good green and clean energy-using products, whether it is from financial management income, environmental protection or self-use.
For users, installing rooftop photovoltaic power generation has several benefits.
1. Save money. Photovoltaic power plants use sunlight to generate electricity, and the electricity generated can be used directly for household use, saving users' home electricity bills, and can save at least several thousand yuan a year. According to the "China Photovoltaic Industry Annual Report", from 2010 to 2020, the cost of photovoltaic power generation has dropped by about 90%. In many countries and regions, photovoltaic power generation has become the cheapest form of energy. The initial investment cost of industrial and commercial distributed photovoltaic systems Further declines are also expected as supply chain costs fall. According to the data of China Photovoltaic Industry Association, by 2030, the initial total investment cost of industrial and commercial distributed photovoltaic systems will reach 2.69 yuan/W, a decrease of 20.41% from 3.38 yuan/W in 2020. In 2021, the operation and maintenance cost of distributed photovoltaic power plants will be 0.051 yuan/year/W, a slight decrease from 2020.
Picture source: Ai Energy Ju’s prospectus, CPIA, Dongguan Securities Research Institute
2. Stable income. The electricity generated by photovoltaic power plants can be sold to the national grid if it is not exhausted, so it is a green energy source. Photovoltaic power stations use idle roof resources to build solar modules on the roof without occupying open space. The service life can be as long as more than 30 years, and it is a relatively reliable financial investment product. Because it does not rely on subsidies now, photovoltaic power plants can also achieve stable profits without losing money, so it is even more stable in photovoltaic income - the time for subsidy issuance is not fixed in various places, but the income from electricity sales will be fixed on the card every month, completely Will not default.
3. Green and environmental protection. Environmentally friendly green photovoltaic power plants do not use coal or fuel during the power generation process, which is a very green and clean energy source, and is very environmentally friendly for rural areas. Now the photovoltaic power plants in developed countries have covered 80%, and there is still a lot of room for development in our country.
4. Effective lightning protection, more secure. The electrical equipment of the solar power generation equipment system has the function of lightning protection, and the power generation system makes full use of the steel structure support under each photovoltaic cell module as a natural grounding body, and lays different artificial grounding grids according to the actual situation on site and soil resistivity to meet To meet the requirements of grounding resistance, the key areas should be strengthened and evenly arranged to meet the requirements of contact potential and step voltage. In case of severe thunder and lightning weather, the photovoltaic power generation system can effectively prevent the electrical equipment in the house from being affected by direct lightning strikes, induction lightning, etc., making people and property safer.
Production-oriented enterprises are often high-energy-consuming units. Whenever the peak period of electricity consumption is reached, the problem of electricity consumption is their top priority. In addition, in recent years, the state has called for energy conservation and emission reduction. In order to ensure production, some enterprises often spontaneously The construction of backup emergency power sources is used to make up for the shortage of power during peak power consumption, and industrial and commercial roofs, as an important application market for distributed photovoltaic power plants, are now being pushed to a very high level. Enterprise factory buildings usually have the characteristics of large roof area, flat roof, few shelters, large power consumption, and high electricity price. They are very suitable for installing photovoltaic power generation systems that are mainly self-contained. For industry and commerce, there are several advantages for installing rooftop photovoltaic power generation benefit.
In short, photovoltaic power generation is the general trend, clean and efficient, and the green industry has practical economic significance, so the country has no reason not to vigorously promote it.
