China Solar PV Updates: LONGi’s Hi-MO 9 Modules Excel, New Projects and Standards Emerging

LONGi’s Hi-MO 9 BC Modules Show Superior Performance Over TOPCon Modules

On February 14, 2025, it was reported that LONGi’s Hi-MO 9 BC modules outperformed TOPCon modules by 33% in an outdoor field test conducted in Sanya City, Hainan Province. The test, verified by the China General Certification Center (CGC), involved four module arrays consisting of 20 Hi-MO 9 and 20 TOPCon modules, assessed under various shading conditions. Results from the test, conducted between October and December 2024, revealed that the Hi-MO 9 modules, utilizing LONGi’s second-generation BC technology, achieved power generation gains of 0.75% under normal conditions, 32.62% under partial shading, and 11.34% under column shading compared to TOPCon modules.

Additionally, data from a test site in Shandong Province indicated that Hi-MO 9 modules provided an average power generation increase of 2.93% over TOPCon modules and 5.92% over HJT modules from September to November 2024. At the TaiyangNews High-Efficiency Solar Technologies Conference 2024, Radovan Kopecek from ISC Konstanz projected that BC technology is expected to reach an average mass-scale efficiency of 25.5% in the next seven years. In contrast, HJT manufacturer Huasun Energy reported that HJT modules yielded approximately 7% more energy than BC modules in tests conducted at the CTC National Inspection Group Mohe Test Base.

Tongwei Launches Integrated Energy Storage Project

Tongwei New Energy, a subsidiary of Tongwei Group, has partnered with the Jintang County Government in Sichuan Province to develop a 150 MW/300 MWh shared energy storage project. This ambitious RMB 500 million ($68.49 million) initiative marks Sichuan’s first cross-regional integrated energy demonstration project, featuring advanced lithium iron phosphate (LFP) battery storage alongside an intelligent energy management system. Recently, Tongwei also secured a contract for the solar module procurement related to the Chacheng Mine subsidence area PV power project.

JinkoSolar Leads Development of International Standard

JinkoSolar, a leading manufacturer of solar PV and energy storage systems, has taken the lead in developing an international standard titled “Accessibility Assessment for Installation and Maintenance of Glass PV Module Integrated with Roof” (ISO/IEC TS 25522). This effort is in collaboration with the Clean Energy Technology Research Institute under China Huaneng, as well as various domestic and international organizations. The newly approved standard aims to evaluate the walkability of solar PV modules during installation and maintenance, addressing a crucial gap in assessing solar module resistance to foot traffic, especially in the distributed solar sector. The standard is currently in the RVN document processing stage, with plans to submit it as a Committee Draft (CD) for public consultation by mid-2025. On a related note, JinkoSolar has filed a patent infringement lawsuit against Waaree Group.

CNNP to Establish 100 MW Rigid Perovskite Module Production Line

CNNP Optoelectronics Technology (Shanghai) Co., Ltd. has submitted an environmental impact report to the Shanghai Municipal Bureau of Ecology and Environment for the first phase of its 200 MW perovskite module pilot production line. This joint venture between the China National Nuclear Corporation (CNNC) and the Chinese Academy of Sciences is set to commence construction of a 100 MW rigid perovskite module production line in February 2025, with production expected to start by September 2025. Previously, CNNP established a MW-scale roll-to-roll flexible perovskite pilot line in 2023, capable of continuously producing 100-meter-long flexible perovskite modules. In 2024, the company achieved a record efficiency of 17.75% for a 1200 × 400 mm flexible perovskite module.

China Datang Opens Bidding for 22.5 GW Module Procurement

China Datang has initiated the bidding process for its solar PV module framework procurement for 2025–2026, amounting to a total of 22.5 GW. This includes the procurement of 19.5 GW of TOPCon modules, 2 GW of HJT modules, and 1 GW of BC modules. Reports indicate that 44 companies have submitted bids for the TOPCon segment, with prices ranging from RMB 0.66 ($0.091) to RMB 0.832/W ($0.114/W), averaging RMB 0.696/W ($0.096/W). For the HJT segment, 12 companies bid with prices between RMB 0.685 ($0.094) and RMB 0.979/W ($0.135/W), averaging RMB 0.763/W ($0.105/W). Meanwhile, the BC segment received bids from 5 companies, with prices ranging from RMB 0.73 ($0.100) to RMB 1.127/W ($0.155/W), averaging RMB 0.839/W ($0.115/W).