Du Xiangwan: Realize the innovative development of renewable energy in the east and west according to local conditions

Abundant renewable energy is an important component of China's energy resource endowment

Du Xiangwan believes that looking forward to the future energy development, we must first re-understand China's energy resource endowment. "If you know what you want to 'erect', you can stand and break." Du Xiangwan said that abundant renewable energy resources are an important part of China's resource endowment, and the resource base for developing a high proportion of renewable energy is abundant. "So far, the renewable energy that China has developed is less than one-tenth of the technically exploitable resources, so we must have a correct understanding of the energy resource endowment."

"With the advancement of technology, the cost of wind and solar power generation has fallen, and the economy has greatly increased." Du Xiangwan said that the cost of wind power and photovoltaic power is about one-tenth of that of 10 years ago, and this factor is also a prerequisite for the development of wind and solar.

"The scenery is intermittent, and there is indeed a problem of 'relying on the sky to eat'." Du Xiangwan said frankly. Electricity needs to be balanced between supply and demand, so how to achieve a balance between source and load? "This requires the intelligence of the power grid, the combination of flexible resources such as wind, photovoltaics, and various energy storage, and can also be combined with coal power peak shaving. Theoretically, high-quality power generation can be achieved by combining the right combinations. Du Xiangwan suggested that more practice should be done in the coordinated development of source, grid, load and storage to realize the high value of wind and solar.

Du Xiangwan said that in the future, under the condition of multi-energy complementarity, the problem of peak regulation can be solved through the power trading market. "For example, there is a region in Germany with a relatively high proportion of photovoltaic, and one day a total solar eclipse is forecasted, so there is no sunlight for a period of time during the total solar eclipse, and there is a need for a certain backup power supply, and users can choose the power supply according to the output prediction of various power sources provided by big data. This requires the development of digitalization and the entry of digitalization into people's homes. If we can do that, we can make the most of energy storage. ”

"In addition, wind and solar power generation enterprises should consider achieving high-quality output through self-construction or purchase of peak shaving capacity in the initial stage of construction. Although wind and solar themselves have a certain intermittency, they can be well regulated by self-construction or purchase of peak shaving capacity, so that high-quality output and high-quality power generation can be achieved. ”

Adapt measures to local conditions to achieve innovative development of renewable energy in the east and west

At the meeting, Du Xiangwan put forward suggestions on the innovative development of scenery in the east and west of China.

The central and eastern parts of China are developed coastal areas and are also the main load areas of energy and power. Du Xiangwan believes that the development of energy and power in the central and eastern regions should adopt a combination of "taking from the side" and "coming from afar".

"First of all, it's 'take from the side', which is really not enough to combine with 'come from afar'. Eastern China has a fairly high percentage of self-sufficiency and can become an energy prosumer. The so-called prosumer is not only using and consuming energy, but also being able to produce energy itself. Du Xiangwan introduced that there are now several pilot energy prosumers in China, such as Lankao, Henan, which has produced more electricity than it needs, "which proves that the central and eastern regions are rich in solar, wind, biomass and other resources, which can improve energy self-sufficiency." ”

"Secondly, the energy development in the central and eastern regions should also pay attention to the combination of centralized and distributed." Du Xiangwan said that it is very important to increase the proportion of distribution. The characteristic of renewable energy is that it is widely distributed, so it should be mainly distributed, plus the necessary centralization. "At present, the concepts of capacity building, capacity community, and microgrid are relatively hot, and the user's home, carport, and even roads and bridges can apply the idea of BIPV (Building Integrated Photovoltaics). The usable construction area in the country is about 20 billion square meters, so that 2 billion kilowatts of photovoltaic power generation can be installed, which is a very important and potential distributed photovoltaic development prospect. ”

China's western region is rich in wind and solar resources, and the construction of large-scale clean energy bases is in full swing. Du Xiangwan believes that the western region is resource-intensive, which is more suitable for the development of centralized development, and at the same time, it can be sent to the east according to the energy needs of the east. "For example, the Qinghai-Henan line from Qinghai to Henan is China's first clean energy transmission UHV channel."

Du Xiangwan held that the development of wind, solar, and hydropower in the western region should first be used to develop the western region's own economy and industry. Some energy-intensive industries should be used to absorb solar and wind energy from the western region on site. "We should make use of the abundant resources such as solar and wind energy in the western region to boost the industrial economy in the western region."