At the 8th China International PV and Energy Storage Industry Conference 2025 held in Chengdu, the organizing committee released the Chengdu Declaration on Eliminating Involution-Style Competition and Strengthening the Foundation of Global Energy Security. Apart from the committee, the declaration involved more than 30 universities and research institutes, over 50 PV and energy storage enterprises, and more than 100 industry media outlets.
It responds to the severe challenges currently facing the industry and aims to drive China’s PV and storage sector toward high-quality development. Its key proposals include:
Promoting ‘anti-involution’ practices in the PV industry by encouraging fair and orderly value-based competition and a higher level of innovation, with a focus on technological advancement;
Optimizing the sector’s capacity structure by avoiding homogeneous, low-end expansion and accelerating the upgrading of high-energy-consumption and low-efficiency equipment;
Strengthening collaboration across the supply chain, establishing fair-trade mechanisms, and guiding the orderly phase-out of outdated capacity through industry self-discipline;
Supporting the high-quality global expansion of Chinese PV and energy storage products to enhance the global competitiveness of ‘Chinese solutions’;
Calling on government bodies, industry associations, and enterprises to jointly foster a fair and orderly development environment.
Recently, Zhejiang Province initiated a public tender to study ‘anti-involution’ policy mechanisms for the PV sector (see China Solar PV News Snippets).
Solar cell and module manufacturer SolarSpace, through its wholly-owned subsidiary Jiangsu Longheng New Energy, plans to upgrade its 8 GW PERC solar cell production lines to TOPCon lines.
According to its environmental impact assessment filing, the company will invest RMB 220 million to purchase LPCVD, ALD, and other equipment to retrofit its existing high-efficiency 8 GW PERC cell lines. Once completed, the project will deliver an annual production capacity of 6.2 GW of high-efficiency TOPCon cells.
Shanghai has released the auction results for its 2025-2026 renewable energy mechanism tariffs, allocating a total of 537,648.86 MWh. A total of 2,039 projects were shortlisted, including 10 centralized PV projects, 2 onshore wind projects, and all remaining projects being distributed PV. All selected projects received a uniform mechanism tariff of RMB 0.4155/kWh, equal to Shanghai’s coal-power benchmark tariff, with a validity period of 12 years. With these results, Shanghai now holds the highest mechanism tariff among all provinces, autonomous regions, and municipalities nationwide that have published comparable data.
Trina Storage, the energy storage manufacturing arm of Trinasolar, announced that its Elementa 3 DC battery cabin has won the 2025 French Design Award. The company stated that Elementa 3 combines safety, stability, and efficiency with aesthetic design, designed for large-scale energy storage systems.
Trina Storage highlighted its environmental advantages: the system uses non-metallic, biodegradable PA66 PACK materials compliant with RoHS 2.0, thereby reducing potential risks to human health and the environment. Its liquid-cooling module uses low-GWP, environmentally friendly refrigerants to lower greenhouse gas emissions. The company added that thanks to the battery cabin’s unique structural layout, site energy density increases by 24.7%, while land use is reduced by 20%.
In late September, Trina Storage commissioned Phase I of its manufacturing base in Dafeng District, Yancheng, Jiangsu Province (see China Solar PV News Snippets).