n-Type cell manufacturer JTPV (Jietai Solar), in collaboration with the Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences and Soochow University, has published a research paper in the international academic journal Joule titled Steel-stencil printing and local polysilicon contacts enable 26.09%-efficient industrial-grade tunnel oxide passivating contact solar cells.
The study focuses on key challenges commonly encountered during the industrialization of TOPCon solar cells, particularly the coordinated optimization of efficiency improvements, manufacturing costs, and bifacial power generation gains. The research proposes an integrated strategy tailored for large-scale manufacturing that combines process and structural co-design. Using industry-standard M10 silicon wafers, the team achieved a certified conversion efficiency of 26.09%, while maintaining strong bifacial performance.
In November, JTPV announced producing its first industrialized TOPCon-perovskite tandem cell, measuring 210 × 105 mm (see China Solar PV News Snippets).
China’s National Development and Reform Commission (NDRC) and the National Energy Administration (NEA) have jointly released a policy document on optimizing market bidding practices for centralized renewable energy power generation enterprises.
The policy allows multiple utility-scale renewable energy projects under the same corporate group within a single province, autonomous region, or municipality to submit bids collectively, provided that the total installed capacity does not exceed the capacity of the largest single coal-fired power plant in the same region.
The document strictly prohibits cross-group or cross-provincial centralized bidding, as well as any monopolistic agreements. The policy also sets out requirements for project application review, supervision, and accountability.
In August, the China Photovoltaic Industry Association (CPIA) issued an industry self-regulation initiative, urging all PV companies to maintain fair competition and foster high-quality development of the sector (see China Solar PV News Snippets).
China Three Gorges Corporation has announced the shortlisted candidates for procurement tenders covering 2.5 GW of PV modules, 3 GW of inverters, and 2.5 GW of PV mounting systems, all of which will be used for the company’s PV projects scheduled for development in 2026.
The 2.5 GW PV module procurement is divided into 2 lots. Lot 1 includes 1.3 GW of n-type modules with a minimum efficiency of 22.83%, while Lot 2 covers 1.2 GW of higher-efficiency n-type modules with a minimum efficiency of 23.8%. The shortlisted suppliers for both lots are JinkoSolar, Tongwei, LONGi, Astronergy, JA Solar, and TCL Solar. Quoted prices range from RMB 0.75/W to RMB 0.7631/W, with an average price of RMB 0.756/W.
The 2.5 GW PV mounting system tender involves a total procurement volume of approximately 100,000 tonnes. CTG shortlisted 5 companies, including Nanchang Nanfei Fire Equipment Manufacturing Co., Ltd. and JS Solar, with bid prices ranging from RMB 489.94 to RMB 522.79 per tonne, and an average price of RMB 506.90 per tonne.
The 3 GW inverter tender covers 300-400 kW string inverters and related auxiliary equipment. Sungrow and Sineng Electric were among the 5 shortlisted companies, while CTG did not disclose bid prices for this segment.
Jiangsu Province has released the results for the first round of its mechanism-based electricity price bidding for renewable energy projects. According to the provincial development and reform authority’s earlier notice, the total quota originally planned was 13.0 billion kWh, including 1.0 billion kWh for offshore wind projects and 12.0 billion kWh for other wind and PV projects (see China Solar PV News Snippets).
Based on the final bidding results, a total of 13.13 billion kWh was allocated, with all of the quota assigned to PV projects. The unified mechanism-based electricity price was set at RMB 0.36 per kWh, with a 10-year execution period.
Hunan Province has announced the results of its renewable energy mechanism-based electricity price bidding. The originally planned quota totaled 3.38 billion kWh, including 2.52 billion kWh for wind power and 0.86 billion kWh for PV projects.
A total of 6,190 PV projects were selected, with an allocated mechanism-based electricity volume of 757.99 million kWh, at a price of RMB 0.375 per kWh. In addition, 20 wind power projects were selected, receiving 2.52 billion kWh of mechanism-based electricity at a price of RMB 0.330 per kWh. The execution period for all selected projects is 10 years.
