The massive global carbon dioxide emissions not only cause serious environmental pollution problems, but also cause frequent global catastrophic weather, which seriously threatens the survival of human beings and other life on earth.
The introduction of carbon peak and carbon neutral target has drawn a beautiful blueprint for China's future green and low-carbon development. However, we should also see that China is at the stage of industrial development, industrial technology and energy consumption and emission levels than developed countries still have a large gap, China to achieve the goal of carbon peak and carbon neutral faces enormous pressure and challenges. To achieve this goal, China should not only strive to improve the level of manufacturing technology, increase energy saving and emission reduction, but also need to change the energy structure and reduce high energy consumption.
The determination of China's carbon peak and carbon neutral target will further promote the development of green economy and reform of urbanization, industrialization and electrification, and is of great significance to the development of new energy, especially the clean development of electricity.
In recent years, carbon emissions trading has gradually become a hot topic. Today we will talk about how much CO2 greenhouse gas emission reduction can be achieved by PV power plant.
Let's take a 1MW photovoltaic power station as an example to do the calculation. First of all, it should be noted that China's geography is vast and the solar radiation resources are different everywhere, so the power generation capacity of the same capacity PV power station installed in different areas is very different. If we take the photovoltaic power station in Jiangsu, Zhejiang and Gansu Hexi Corridor as an example to do the analysis.
▲ Commercial and industrial rooftop PV power plants
We know that the annual solar radiation on the surface of the best inclined PV array in Jiangsu and Zhejiang is usually around 1300kWh/m?while the solar radiation resources in the northwest region around the Hexi Corridor are more abundant, about 2000kWh/m?or so.
The 1MW PV power plant around Jiangsu and Zhejiang can generate up to 1 millionkWh in the first year.
The first year power generation capacity of 1MW photovoltaic power plant along the Hexi Corridor can reach 1.6 millionkWh.
Compared with conventional coal-fired power plants, 1MW PV power plants can save 405-630 tons of standard coal, 1036-1600 tons of carbon dioxide, 9.7-15.0 tons of sulfur dioxide and 2.8-4.4 tons of nitrogen oxides per year respectively.
According to the current average trading price of carbon emission of about 40 yuan/ton, the annual revenue of carbon emission reduction trading of 1MW PV power plant is about 41,000-64,000 yuan.
In 1997, more than 100 countries around the world signed the Kyoto Protocol, carbon emission rights became a commodity, and carbon trading became one of the core means of carbon emission reduction. At present, there are dozens of carbon trading systems around the world. 2020, the global carbon market trading scale reached 229 billion euros, up 18% year-on-year, with a total carbon trading volume of 10.3 billion tons. The price of carbon emissions doubles from an average of 25 euros per ton to around 50 euros per ton by early May 2021.
China's carbon trading work has also been carried out for more than a decade, with eight regions in the country, including Beijing, Tianjin, Shanghai, Chongqing, Hubei, Guangdong, Shenzhen, and Fujian, having carried out carbon trading pilot projects, completing nearly 500 million tons of carbon dioxide emissions, with a turnover of tens of billions of yuan. At the same time, the departments of science and technology around the world have been engaged in the clean energy mechanism of the institutions or carbon emissions management department.
It is understood that the current price of carbon emissions trading in China is 20-52 yuan per ton, which is still relatively low compared with the international market, but with the national goal of "double carbon" and the promotion of internationalization, the trend of rising carbon prices is inevitable. China currently has 24GW of installed photovoltaic power stations, with an annual power output of 117.2 billion kWh and an emission reduction of 11,688,000 tons of carbon dioxide. There are about 40-60 million yuan worth of emission allowance targets available for market trading every year. Photovoltaic power generation can not only obtain economic benefits directly through the sale of electricity, but also obtain additional economic income through carbon emissions trading.
We believe that in the future, China will further increase the management of carbon emission quotas and develop carbon emission market trading to promote the development of new energy and the realization of the "double carbon" goal.
(Note: Calculation formula: 1 unit of electricity = 0.39 kg of coal = 0.997 kg of carbon dioxide = 0.00936 kg of sulfur dioxide = 0.00273 kg of nitrogen oxides)
