Liu Hanyuan: Solar photovoltaic is a mainstream clean energy that humans can use forever

According to the "BP World Energy Statistics" in 2010, calculated on the basis of the annual mining rate in 2009, the world's oil can be mined for 45.7 years. Calculated in the same way, existing natural gas reserves can meet 62.8 years of mining, while coal reserves can be mined for 119 years.

The reality that corresponds to the rapid development of the Chinese economy over the past 30 years is that the annual total energy consumption in China is approximately 41.2 billion tons of standard coal, with an average annual increase of 5.5%. In the next 20 years or so, if China's gross domestic product (GDP) quadruples again, it will consume nearly 3 times the amount of today's coal, reaching about 10 billion tons. With this development, China's coal resources will be depleted in the next 100 years. In addition, China’s dependence on oil imports has exceeded 50%, and the total oil consumption by that time will also be about 2 times now.

The Standing Committee of the National Committee of the Chinese People's Political Consultative Conference, Executive Vice President of the New Energy Chamber of Commerce of the All-China Federation of Industry and Commerce, and Chairman of the Board of Directors of Tongwei Group Liu Hanyuan were interviewed by the reporter.
Therefore, we will fundamentally solve China’s energy security, and seek and develop truly civilized, long-lasting, and sustainable low-carbon and clean energy resources in China, where per capita resources are significantly lower than the global average, rapid economic development, and rapidly rising energy consumption. In terms of significance, it has important practical significance and far-reaching significance of strategic security.

In China, wind energy, hydro energy, biomass energy and nuclear energy are all included in the new energy category. Which kind and which kind of energy can truly become the clean energy supply for China's long-term stability? The Standing Committee of the National Committee of the Chinese People's Political Consultative Conference who is currently participating in the China New Energy International Summit in Chengdu Shuangliu, the executive vice president of the New Energy Chamber of Commerce of the All-China Federation of Industry and Commerce, and Chairman of the Board of Directors of Tongwei Group Liu Hanyuan told the reporters that the development of clean energy based on the photovoltaic industry is truly developing. It is the fundamental way for China to obtain sustainable clean energy.

Comparison between several clean energy sources

In Liu Hanyuan’s view, although China’s water energy is relatively abundant and wind power is not bad in some places, the installed capacity of wind power has reached tens of millions of kilowatts last year. It should be said that it has also become the main force of new energy, with hydropower installed capacity exceeding 100 million kilowatts. The development potential is still about 100 million kilowatts, but in terms of quantity, the two new energy sources cannot meet the total energy demand of human development, and can only become the long-term suppliers of narrow electric power sources with 5% or less.

"As for nuclear power, there are now dozens of nuclear reactors under construction in China. The development momentum is very fierce. In Europe, French nuclear power accounts for 80% of the country's entire power, but they are also thinking about two issues, one is nuclear fuel supply, and the other is The treatment of nuclear waste.” Liu Hanyuan said that the material of nuclear power is uranium, which is based on the number of nuclear power plants in the world. The proven uranium reserves can only be burned for 50 to 100 years. The second is nuclear waste disposal. Even if the world’s uranium can be burned for 500 years or 5,000 years, the accumulation and storage of nuclear waste is also a very problematic headache. Where it is placed will have great psychological pressure and potential social harm. Therefore, after careful study, we finally discovered that there is a clean nuclear raid that happens anywhere near us, has burned 5 billion years, and will continue to burn 5 billion years, releasing energy for generations of people on earth. On behalf of sustainable use, this is solar energy.

What is the level of solar photovoltaic conversion efficiency? Liu Hanyuan took biomass energy for comparison. The same large area is used to build photovoltaic power plants to generate electricity, or to use corn to produce bio-alcohol. As a result of repeated measurements, solar photovoltaic power generation can achieve a fixed efficiency of corn to light energy with a system conversion efficiency of 15% to 20%. 30 times to 60 times.

Of course, in terms of quantity, solar power is somewhat decentralized under the influence of natural conditions such as light, but Liu Hanyuan believes that there is absolutely no problem in terms of total amount. The United States is the largest country in terms of electricity consumption. However, by carefully calculating the sky above the U.S. highways, parking lots, and roofs, and using these spaces, the current PV power stations can output electricity equivalent to the total U.S. installed capacity. China's desert has 1 million square kilometers, and the grassland has 1.5 million square kilometers. Together with the future highways and the space on the roof, they all use solar energy to generate electricity, which can also meet our overall demand for energy in the future. "The results of comparison have no doubt answered the question that solar photovoltaic is a mainstream clean energy that people can rely on, trust, and can rely on for a long time. If we do not realize this, we may be short-sighted."