Moderator: Fang Wei, National Grid News Editor
Guest: Director of Renewable Energy Division, Energy Bureau, Shilishan National Development and Reform Commission
Zhao Qingbo, Director of Development Planning Department, State Grid Corporation of China
Xu Honghua, Deputy Director, Institute of Electrical Engineering, Chinese Academy of Sciences
After years of development, photovoltaic power generation has been relatively mature at the technical level, and gradually developed from the independent system in the past to the scale of grid integration.
Moderator: According to the future energy development trend, the development and utilization of solar energy is very popular among many countries in the world. What is the current status of China's photovoltaic industry?
Shi Lishan: At present, mature solar energy utilization technologies are mainly solar photovoltaic power generation and solar water heaters. Solar photovoltaic power generation has the characteristics of mature technology and high cost. It is necessary to give full play to the advantages of solar photovoltaic power generation for decentralized power supply, and to promote users to use photovoltaic power generation systems or build small photovoltaic power plants in remote areas to solve the problem of power supply for non-electricity population. In large and medium-sized cities with more developed economies and higher levels of urban modernization, rooftop solar-connected photovoltaic power generation facilities integrated with buildings will be built. First of all, it should be applied on public welfare buildings, and then gradually promoted to other buildings. At the same time, it promotes the use of photovoltaic power sources in the lighting of public facilities such as roads, parks, stations, etc., providing the necessary market for the development of solar power generation technology.
Xu Honghua: The connection between photovoltaic power generation system and power grid can be divided into two categories: independent photovoltaic system and grid-connected photovoltaic system. After years of development, photovoltaic power generation is currently a relatively mature and reliable technology, and has gradually evolved from the past independent systems to large-scale grid connection. However, the most significant shortcoming of photovoltaic power generation is the high cost. At present, the production cost per kWh of electricity is about 20 times that of coal-fired power and about 10 times that of wind power. According to the development roadmap of the United States, Japan, and Europe, it is expected that with the advancement of technology, the improvement of conversion efficiency, and the expansion of market size, the cost of photovoltaic power generation may be close to the current wind power cost by 2030. In short, solar photovoltaic power generation is currently costly, but the industrialization base is good. It has the technical, cost and environmental advantages to become a strategic energy source around 2030, and can become an important source of energy supply around 2050.
After entering this century, China's photovoltaic market has developed rapidly. In 2002, the state launched the “Power Transmission to Rural Areas†project in the western provinces and towns. By the end of 2005, a total of 268 stations were built in seven provinces in western China (Tibet, Xinjiang, Qinghai, Gansu, Inner Mongolia, Shaanxi, and Sichuan). The small hydropower station and 721 photovoltaic and wind-solar hybrid power stations have solved the basic living electricity problem of about 300,000 households with 1.3 million people. The “Power Transmission to the Countryside†project is the largest project in China and the world that has adopted photovoltaic power generation or wind-solar hybrid power generation to realize rural electrification in remote and power-free areas. The implementation of the project has really promoted the development of the domestic photovoltaic industry, and thus created the rise of a large number of domestic PV companies such as Wuxi Suntech, Tianwei Yingli, Changzhou Tianhe, etc., and promoted the talent cultivation and capacity building of China's photovoltaic industry. It has greatly promoted and promoted the development of China's photovoltaic industry.
At present, the proportion of photovoltaic power plants in the power system is very small, and there is no significant impact on the power grid after the grid connection. However, the scale of photovoltaic power plants will continue to increase in the future, we must give full attention to
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