China Metallurgical News
Reporter Yang Kai reports
At present, under the national "dual carbon" strategy and the strategic goal of "dual control of carbon emissions", accelerating the green transformation of the steel industry has become a necessary task that needs to be implemented urgently. For iron and steel enterprises, the construction of photovoltaic power generation projects should fully consider the power demand of iron and steel enterprises and the power generation characteristics of photovoltaic power stations to ensure the stability and reliability of power supply. At this time, the selection of photovoltaic technology and photovoltaic modules is particularly important. On October 11, LONGi Green Energy released the HPBC2.0 technology platform and a new generation of distributed module product, Hi-MO X10, which has attracted wide attention from industry players for its power generation performance, reliability, customer benefits and aesthetics.
The picture shows the scene of the press conference
图为Hi-MO X10 新品
The picture shows the Hi-MO family series products
Break through again and win the peak of efficiency
According to reports, the Hi-MO X10 released this time is a high-quality module based on cross-era HPBC2.0 cell technology, with a maximum mass production power of 670W, which is more than 30W higher than the mainstream module power of TOPCon in the industry. Zhong Baoshen, Chairman of LONGi Green Energy, said in the product release that the mass production efficiency of HPBC2.0 cells used in this module has reached 26.6%, which is the last generation of crystalline silicon cells to achieve an absolute efficiency of 1% leap, announcing the true arrival of the BC era.
At present, LONGi Green Energy has released a number of HPBC series modules, among which Hi-MO X6 is a first-generation product, and since October last year, it has successively launched single-glass anti-ash modules, double-glass damp-heat resistant modules, and villa modules for different subdivision scenarios.
The Hi-MO X9 released by LONGi Green Energy in May this year and the X10 series released this time are both HPBC2.0 battery technologies. The N-type Terry wafer equipped with the X10 series has the characteristics of more concentrated resistance, reduced current loss, and improved mechanical strength.
In addition, the new modules released by LONGi this time further introduce 0BB technology, which realizes "no busbar on the back" on the basis of "no busbar on the front", achieves the maximum area of light absorption on the front side, and improves the efficiency of absorbing reflected light on the back. Using the 0BB structure, after removing the main grid, the fine grid directly penetrates the connecting ribbon, shortens the current transmission distance, and further increases the power of the module by 5W+.
More reliable, build a solid foundation for safety
For photovoltaic power generation projects, ensuring the stability and reliability of power supply is a top priority.
Occlusion and hot spots are important challenges that affect the safe operation of distributed power stations. The unique bypass-diode-like structure of the Hi-MO X10 module reduces the power loss of the module by more than 70% compared with TOPCon products when it encounters shading. At the same time, it can greatly reduce the temperature of hot spots under shading, and the temperature is reduced by 28%+ compared with conventional batteries, ensuring the stable operation of the module and the safety of the roof.
Ultraviolet radiation, high temperature and humidity, and alternating hot and cold cycles also pose challenges to the stable operation of modules during the long "service" period. The Hi-MO X10 module has a low operating temperature and a high-density package, which has "full anti-aging" performance. Hi-MO X10 modules also have system-level impact and crack resistance. The full-back "one" welded structure greatly reduces the risk of hidden cracks during transportation, installation and "service" of components. Based on the logistics and transportation data, the overall risk of hidden cracks has decreased by as much as 87.2%.
High yield, thickened value return
The economics of photovoltaic power plants are also a key factor to be considered when building photovoltaic power plants in steel mills. At the press conference, some experts said that on the basis of safety and reliability, the same area, the power increase of 30W and the efficiency increase of 1% means that the installed capacity of Hi-MO X10 will be increased by more than 5% under the same roof area. Simulations of power generation in typical regions around the world show that the average power generation has increased by more than 8% compared to TOPCon products.
At present, the mainstream product in the photovoltaic industry is TOPCon modules. According to LONGi Green Energy's data, based on the current mainstream version (2382×1134mm) and the module cost of 0.8 yuan/Wp, the total profit of Hi-MO X10 modules increased by 9.1% compared with that of mainstream TOPCon in terms of total revenue over 25 years. The internal rate of return (IRR) increased by 6.2%. In addition, the payback period of Hi-MO X10 is shortened by 0.2 years compared with TOPCon, and the electricity cost is 5.1% lower than that of the latter in 25 years. The net profit investment of 10,000 yuan was 6.1% lower than that of the latter.
Extreme beauty, suitable for multiple scenes
Since the second half of 2023, LONGi Green Energy has intensively launched a variety of module products suitable for different application scenarios. According to the company's financial report data in the past five years, LONGi Green Energy has invested more than 23.5 billion yuan in R&D, and the R&D investment in 2023 will be 7.721 billion yuan. From the Hi-MO 6 module, which was born out of HPBC1.0 technology, to the more efficient HPBC2.0 and Hi-MO 9 modules, to the newly released Hi-MO X10 product, LONGi continues to expand the new boundaries of photovoltaic scenario applications and challenge new peaks in photoelectric conversion efficiency.
At the same time, in terms of artistry, LONGi also strives to change the stereotype of "plastering and patching" photovoltaic modules in the past. Whether it is all-black and ultra-black products launched globally, or villa components launched for the Chinese market, they have been sought after by the market after being launched, especially in the residential markets of Europe, Asia-Pacific, Japan and China.
Break the boundary and promote the in-depth application of "photovoltaic +".
In 2022, the National Development and Reform Commission issued the "Implementation Guide for Energy Conservation and Carbon Reduction Transformation and Upgrading in the Iron and Steel Industry", which clearly proposes to encourage iron and steel enterprises to make full use of large-scale high-quality roof resources, invest in the construction of distributed photovoltaic power generation projects in the form of self-construction or leasing, and increase the proportion of green electricity use by enterprises. By introducing photovoltaic green power into their own production, iron and steel enterprises can achieve zero carbon indirect emissions on the one hand, and accelerate the process of achieving carbon peak and carbon neutrality. On the other hand, enterprises can also obtain low-cost electricity resources, save a lot of electricity expenses, and reduce the production cost of products. Iron and steel enterprises can also cooperate with photovoltaic enterprises to jointly promote the construction and operation of photovoltaic power stations to achieve win-win and green development.
At present, the "dual carbon" goal is gradually being implemented, and it is also expected that "photovoltaic +" will be deeply applied in more ecological scenarios such as steel.