China Solar PV News Snippets: Phenosolar’s R&D Inkjet Tandem Cell Line Online & More

China issues policy for localized renewable consumption; DAS Solar achieves thin-film TOPCon breakthrough; TBEA gains ISO security, IT certifications; China releases 2025–2026 power equipment plan.
Phenosolar new inkjet tandem cell line
Phenosolar has commissioned its new inkjet R&D line for tandem solar cells.(Photo Credit: Phenosolar)
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Phenosolar's new inkjet tandem cell line commences operation

Perovskite maker Phenosolar has commissioned its new inkjet R&D line for tandem solar cells. The company has invested about RMB 20 million ($2.79 million) in building this facility. The production line is equipped with a Class-1000 cleanroom, high-precision inkjet pilot equipment, ALD, PVD, screen printing, and characterization tools that enable full-chain verification of film thickness, interface uniformity, and optoelectronic performance, providing technical support for R&D and industrialization of tandem cells.

Phenosolar introduced a material suite, including high-performance SAM materials, perovskite precursor solutions, interface modifiers, and PCBM inks, fully compatible with the line to support stable printing and large-area tandem cell fabrication.

In July, Phenosolar launched PhenoGlass, which it calls the ‘industry's first’ perovskite substrate product integrating a self-assembled monolayer (SAM) (see China Solar PV News Snippets).

China issues policy to promote localized consumption of renewable energy

China’s National Development and Reform Commission (NDRC) and National Energy Administration (NEA) have issued a new policy, effective October 1, 2025, to improve the pricing mechanism for localized consumption of wind and solar power.

The notice requires projects connected to the public grid to ensure at least 60% of renewable generation is self-consumed, with self-consumption representing no less than 30% of total electricity use – rising to 35% for new projects starting in 2030. Projects must have sub-metering, with grid companies installing devices to measure generation, consumption, and storage data.

The projects must pay transmission and distribution charges and system operation fees, while off-grid projects are exempt. The notice also requires projects to participate directly in power market trading, without grid companies acting as agents, and their grid-fed electricity will not be included in the renewable price settlement mechanism.

The NDRC also recently released draft revisions to 4 power pricing regulations (see China Solar PV News Snippets).

DAS Solar’s breakthrough in thin-film TOPCon technology
DAS Solar, together with Zhejiang University’s State Key Laboratory, has developed a multi-material, multi-dimensional modeling approach that identifies ways to reduce soldering-induced stress in ultra-thin n-type TOPCon cells, potentially enabling wafer thicknesses down to 70 µm.(Photo Credit: DAS Solar)

DAS Solar’s breakthrough in thin-film TOPCon technology

DAS Solar, in collaboration with the State Key Laboratory of Silicon and Advanced Semiconductor Materials at Zhejiang University, has announced a breakthrough in addressing thermal stress issues in thin n-type TOPCon cell fabrication and module soldering. The research, published in the Solar Energy journal of the International Solar Energy Society (ISES), tackles the ‘bottleneck’ limiting large-scale application of ultra-thin TOPCon cells.

According to the research, the team developed a multi-material, multi-dimensional cell-solder-module model, using finite element analysis, to systematically study how wafer thickness, main busbar number, and solder shape and cross-section affect soldering-induced stress and wafer deformation. Results showed that stress is concentrated at the silver paste/solder interface, and that increasing the number of main busbars and using flat solder strips optimizes stress distribution and improves mechanical performance. Simulations indicate n-type wafer thickness could potentially be reduced to 70 µm.

TBEA secures information security and IT service management certification

TBEA, a manufacturer of inverters and polysilicon and a developer of solar PV projects, has officially obtained ISO/IEC 27001 Information Security Management System and ISO/IEC 20000 IT Service Management System certifications from the China Quality Certification Center (CQC).

ISO/IEC 27001 establishes standardized processes for identifying and managing data breaches, cyberattacks, and internal risks, while ensuring regulatory compliance. ISO/IEC 20000 provides a framework for IT service management, covering service design, delivery, and continuous improvement to enhance efficiency and standardization.

The company stated that obtaining these certifications signifies its alignment with international standards in information security governance and IT service management.

TBEA recently released its financial results for H1 2025, reporting revenues of RMB 48.35 million ($6.79 million), which were roughly flat YoY (see China Solar PV News Snippets).

China issues 2025-2026 power equipment plan to promote renewable energy development

China’s Ministry of Industry and Information Technology (MIIT), the State Administration for Market Regulation (SAMR), and the National Energy Administration (NEA) jointly released the ‘Power Equipment Industry Stable Growth Plan (2025-2026)’, emphasizing high-quality development of renewable energy equipment.

Key measures include improving the quality of equipment supply, implementing innovative initiatives for advanced energy storage, and optimizing the deployment of wind, solar PV, and distributed energy sources. Smart microgrid construction and grid-side energy storage applications will enhance the grid’s capacity to accommodate, allocate, and regulate clean energy.

The plan also encourages companies to expand international markets, deepen full-industry-chain cooperation in wind, solar PV, and energy storage, and promote green and intelligent transformation alongside equipment recycling.

MIIT and SAMR recently also released the ‘2025-2026 Action Plan for Stabilizing Growth in the Electronic Information Manufacturing Industry’, with multiple references to the solar industry (see China Solar PV News Snippets).

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