China’s PV maker unveils anti-dust solar module with 24.8% efficiency, 670 W power
Chinese solar PV solutions giant Longi has unveiled its Hi-MO X10 anti-dust solar panel at the Jinan International Solar Energy Utilization Conference. The series features HPBC 2.0 cell technology, a uniform half-cell (6×24) design, and measures 2,382×1,134×30 mm. The panel offers 640–670 W power output with 23.7–24.8% efficiency.
The Hi-MO X10 series features anti-dust technology, boosting energy generation per unit area by over 10% compared to TOPCon panels. First introduced in October 2023 with Longi’s first-generation BC products, the technology has undergone over two years of testing.
Minimal degradation over 30 years
The module’s open-circuit voltage ranges from 53.70 V to 54.30 V under standard test conditions and 51.04 V to 51.61 V under nominal operating conditions. Short-circuit current varies between 15.13 A and 15.60 A, with a temperature coefficient of -0.26% per degree Celsius.
Longi states the module’s degradation is 1% in the first year, with an annual rate of up to 0.35% over 30 years. The company also claims its latest module improves per-watt energy output by 2% and, combined with HPBC 2.0, increases overall energy yield by up to 10% over competing TOPCon modules.
Installing Hi-MO X10 (660 W) panels on a 10,000 m² rooftop could produce 189,000 kWh more power per year than a 630 W TOPCon system, according to Longi’s estimates. This translates to an annual revenue boost of $15,700 and close to $370,000 over 30 years.
Shade tolerance and fire safety
The PV maker highlighted three advantages of the Hi-MO X10 over standard TOPCon panels. Its anti-dust design allows rainwater to wash away dust, reducing maintenance and preventing hotspots, with a 2.04% average energy gain.
The panel’s shade tolerance minimizes power loss by redirecting current around shaded areas, reducing shading losses by 70%. Additionally, its fire prevention mechanism lowers thermal hotspots, with temperatures staying around 80°C under shading, compared to over 130°C for conventional TOPCon panels, reducing fire risks.
At the start of the year, Longi’s chairman, Zhong Baoshen, highlighted the remarkable growth of the photovoltaic industry, noting its exponential expansion and pivotal role in the energy transition. He pointed out that it took 68 years to reach the first terawatt of solar capacity, but the second terawatt was achieved in just two years, underscoring the rapid progress in recent years.
While the International Energy Agency (IEA) projects global solar PV capacity to exceed 4,000 gigawatts (GW) by 2030, Baoshen believes it will surpass 5,000 GW. He noted that the installed capacity of solar PV is expected to grow significantly in the coming years, with its development progressing faster than initially anticipated. According to the Chinese giant, solar PV has become a key driver in the global energy transition and is playing an increasingly important role in reshaping the energy landscape.