Provide "data productivity" for high-quality development of new energy

--Observation on the 2023 data results conference of the National Photovoltaic and Energy Storage Demonstration Experimental Platform (Daqing Base)

"Judging from the experimental results, the three typical design options with the highest power generation capacity of photovoltaic power stations in 2022 and 2023 are dual-shaft brackets + double-sided components + string inverters, flat single-shaft (with a 10-degree inclination angle) brackets + double-sided components + string inverters, inclined single-shaft brackets + double-sided components + string inverters. The theoretical calculation and measured data of dust, snow blocking loss, and temperature impact loss are 1.68% and 3%, respectively." This is a set of data obtained by reporters at the data results conference of the National Photovoltaic and Energy Storage Demonstration Experimental Platform (Daqing Base)(hereinafter referred to as the "Demonstration Platform") held on March 28.

In response to the data results, Xie Xiaoping, director of the Academic Committee of the Demonstration Platform, suggested that photovoltaic power stations in high latitudes and cold temperate zones can promote the use of inclined flat single shaft support systems to increase overall power generation.

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Provide innovative impetus for the construction of China's new energy system

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Looking back on the development of the photovoltaic and energy storage industries in 2023, the momentum is strong. Data shows that as of the end of 2023, China's cumulative installed capacity of photovoltaics has reached 609 million kilowatts, an increase of more than 55% from the end of 2022; the cumulative installed capacity of new energy storage has reached 31.39 million kilowatts, an increase of more than 260% from the end of 2022.

While the installed capacity of photovoltaic and energy storage is expanding rapidly, prices in the entire industry chain have dropped significantly. As of the end of 2023, almost all prices in the photovoltaic industry chain have fallen by more than 50%, and photovoltaic module prices across the board are below 1 yuan/watt. "At present, China's photovoltaic module prices continue to decline, and corporate profitability continues to decline, but companies are still very willing to expand production. In the future, China's photovoltaic application market will continue to maintain high-level platform operations." Liu Yiyang, deputy secretary-general of the China Photovoltaic Industry Association, said at the press conference.

Liu Yiyang pointed out that in the future, it will become an inevitable trend for new energy sources such as photovoltaics to participate in market-oriented electricity transactions.

The rapid growth of photovoltaic installed capacity has put pressure on power grid consumption, and solving current consumption problems is inseparable from the support of energy storage. At present, the cost of new energy storage is not smooth, and the utilization level of energy storage in new energy allocation is low. Facing the goal of "carbon peaking and carbon neutrality", the photovoltaic and energy storage industries need to develop in a coordinated manner to accelerate industrial technology updates and product iterative upgrades.

Judging from the data released by the empirical platform for two consecutive years, it starts from different terrain, geological and climatic conditions to test the performance, weather resistance and reliability of photovoltaic products and optical storage systems in real operating environments, which is conducive to new energy. Enterprises efficiently carry out construction and operation work in high-latitude, cold-temperate regions.

"By establishing a dynamic database for outdoor empirical applications of different products, we propose optimal design plans to improve system efficiency and reduce electricity costs, which promotes technological progress in the industry." Xiang Haiping, chief engineer of the National Energy Administration, spoke highly of the statistical analysis results of empirical experimental data. Xiang Haiping pointed out that innovative research based on the empirical platform can provide useful experience for further promoting high-quality development of the industry and building new power systems and new energy systems.

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Provide Chinese wisdom for the development of global new energy technologies

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The National Photovoltaic and Energy Storage Demonstration Experimental Platform (Daqing Base), located in Daqing City, the "Oil City", is the first national photovoltaic and energy storage demonstration experimental platform approved by the National Energy Administration. It is constructed and operated by the National Power Investment Huanghe Company.

Daqing City is located at high latitudes and cold temperate zones, with four distinct seasons and an alpine climate; the surface environment is diverse and has rich application scenarios. These seemingly "shortcomings" conditions have formed a key element of the Daqing base as a "natural laboratory" for empirical experiments in photovoltaic and energy storage.

In addition, the Daqing base has a flat terrain, locally distributed reservoirs, depressions, and blisters, and rich solar energy resources, allowing large-scale and continuous outdoor empirical experiments. The diversity of undeveloped saline-alkali land and water surface environment in Gaotaizi Town, Datong, where the platform is located, is also conducive to outdoor demonstrations of multiple composite development and application scenarios.

What kind of brackets and placement positions have the lowest electricity cost? Thin snow, snow, heavy snow, blizzard, what impact does different snow amounts have on photovoltaic panel power generation capacity? Here, answers can be found from the data results. According to Yao Xiaoyan, Secretary of the Party Committee and Chairman of State Power Investment Yellow River Company, in 2023, based on extensive soliciting opinions from industry experts, the platform will continue to optimize data analysis methods, improve data analysis content, and summarize the long-term operation of products and systems in high latitudes and cold temperate zones. 361 empirical experimental comparative data have been formed. The release of data results for two consecutive years not only provides scientific basis for the country to formulate industrial policies and technical standards, but also contributes Chinese wisdom and Chinese solutions to the technological progress and innovative development of China and even the world's new energy industry.

Regarding the next stage of work of the National Photovoltaic and Energy Storage Demonstration Experimental Platform (Daqing Base), Xiang Haiping suggested that the first is to maintain the representativeness and advanced nature of empirical experimental product selection, the second is to promote industry technical method innovation and product certification, and the third is to Carry out research on key technologies for the construction of new power systems, and the fourth is to unite industry forces to further promote the deep integration of industry, academia and academia; It is hoped that the empirical platform will aim at the forefront of the world's energy technology, focus on key energy areas and major needs, reasonably select technical routes, further innovate and expand the platform's empirical experimental plans, strengthen the transformation and application of platform data results, and provide "data productivity" for vigorously promoting the high-quality development of China's new energy.

author:Li Donghai

edit:Kong Kexing

proofreading:Han Yuxi