Inner Mongolia Desert PV Project: BC Modules Surpass TOPCon by 2.45% in Watt-for-Watt Output

A recent empirical project led by Inner Mongolia Energy Group in China has demonstrated remarkable results in a photovoltaic (PV) desert control project.
Inner Mongolia Desert PV Project: BC Modules Surpass TOPCon by 2.45% in Watt-for-Watt Output
Inner Mongolia Desert PV Project: BC Modules Surpass TOPCon by 2.45% in Watt-for-Watt OutputLONGi
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A recent empirical project led by Inner Mongolia Energy Group in China has demonstrated remarkable results in a photovoltaic (PV) desert control project. Spanning approximately 1,533 hectares, this project conducted the first performance comparison between LONGi’s HPBC2.0 technology—Hi-MO 9 modules—and conventional TOPCon modules in a sandy environment. The study offers valuable data to guide future PV technology selection and project deployment in desert regions. 

Inner Mongolia Desert PV Project: BC Modules Surpass TOPCon by 2.45% in Watt-for-Watt Output
Inner Mongolia Desert PV Project: BC Modules Surpass TOPCon by 2.45% in Watt-for-Watt OutputLONGi

Located in an area with about 3,000 hours of annual sunshine, the project site also faces harsh continental climate conditions such as drought, scant rainfall, high evaporation rates, and frequent sandstorms. These conditions place extreme demands on the reliability and long-term power generation performance of PV equipment. Under identical environmental and site conditions, 640W BC modules and 575W TOPCon modules were installed for a direct comparative assessment. 

Inner Mongolia Desert PV Project: BC Modules Surpass TOPCon by 2.45% in Watt-for-Watt Output
Inner Mongolia Desert PV Project: BC Modules Surpass TOPCon by 2.45% in Watt-for-Watt OutputLONGi

Data gathered from April to July 2025 showed that LONGi’s BC technology significantly outperformed TOPCon, registering a 2.45% increase in electricity generation per kilowatt and a 9.05% rise in power output per unit area. Particularly noteworthy was BC’s performance in June—a month with 14 overcast or rainy days—where it consistently outperformed TOPCon modules across all 30 days. The monthly cumulative power generation gain reached 2.44%, underscoring BC's superior efficiency under low-light conditions. 

The adoption of BC technology not only provides critical guidance for large-scale PV desert control projects but also sets a technical benchmark for renewable energy development in desert and arid regions. These findings highlight that high-efficiency BC technology can significantly enhance the lifecycle value of PV power stations and support sustainable energy development in desertified areas characterized by dry, low-rainfall conditions.

About LONGi

Founded in 2000, LONGi (Stock code: 601012. SH) is committed to being the world's leading solar technology company, focusing on customer-driven value creation for full scenario energy transformation.

Under its mission of 'making the best of solar energy to build a green world', LONGi has dedicated itself to technology innovation and established several business sectors, covering mono silicon wafers, cells and modulescommercial & industrial distributed solar solutions, green energy solutions, building integrated photovoltaic and hydrogen equipment. As an international company, LONGi's business covers more than 160 countries and regions. Actively practicing its "Solar for Solar" concept, LONGi is accelerating the global transition to sustainable energy and promoting energy equity, enabling more people around the world to access affordable clean energy.

Disclaimer: The following is a press release issued by LONGi. TaiyangNews.info has republished this content verbatim and assumes no responsibility for any errors, omissions, or misrepresentations. Any opinions, statements, or claims expressed in this release are solely those of LONGi.

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