Leading heterojunction (HJT) manufacturer Huasun Energy has signed a strategic cooperation agreement with redox flow battery producer Suqian Time Energy Storage Technology Co., Ltd. (STES), establishing a long-term strategic partnership. With this partnership, the 2 companies aim to collaborate in areas such as the development of solar-plus-storage projects and the procurement of PV modules and long-duration energy storage systems (ESS).
STES specializes in the R&D, production, and sales of redox flow batteries, with an annual production capacity of 2 GWh of electrolyte-based flow batteries. Huasun Energy noted that both companies are optimistic about the prospects of the PV + long-duration ESS model and plan to bring their respective advantages to establish an information-sharing and project co-development mechanism.
Last month, Huasun Energy entered into a tripartite strategic cooperation agreement with Xiamen C&D Emerging Energy and Talesun Solar (see China Solar PV News Snippets).
Chinese inverter manufacturer Ginlong Solis has received approval for its convertible bond issuance from the Shenzhen Stock Exchange. The company will raise funds by issuing convertible bonds worth RMB 1.68 billion ($232.86 million) to fund several PV-related projects.
These include the development, ownership, and operation of 120 MW of C&I PV power plants in China. The company will also use a part of the funds raised to expand its inverter production capacity, adding an annual output of 25,000 units each of high-voltage, high-power (>250 kW) string inverters for grid-tied systems, and mid- to high-power (>20 kW) hybrid storage inverters. Solis also plans to build a new R&D center in Shanghai and carry out digital and intelligent manufacturing upgrades.
According to Wood Mackenzie, Solis was placed 3rd in global solar inverter shipments in 2024 (see China Leads 589 GW AC Global PV Inverter Shipments In 2024).
Quartz silicon material manufacturer SINOSTONE has announced that it is suspending its planned semiconductor-grade high-purity quartz sand project. The company had unveiled this in August 2024, with a total planned investment of RMB 215 million ($29.86 million) and a construction period of 18 months. The facility had a planned quartz sand capacity of 10,000 tons per year for use in solar PV crucibles.
The company explained that the suspension was mainly due to significant changes in market structure and demand in downstream industries, which could make investment returns fall short of expectations under the current market environment.
Shifang Bocai Xingyang New Material Technology Co., Ltd., a startup founded in 2025, is venturing into the back contact (BC) solar cell manufacturing sector. According to publicly available information from the local government, the company plans to construct 2 pilot lines in Deyang, Sichuan Province, for the R&D and trial production of high-efficiency tunnel passivated back contact (TPBC) solar cells. The pilot R&D phase is expected to last 2 years, after which it plans to start mass production, with a designed annual capacity of 1.4 GW.
PV inverter and wind power converter manufacturer Hopewind has released its 2025 H1 financial results. For the 6 months ending June 30, 2025, the company recorded operating revenues of RMB 1.88 billion ($261.71 million), up 36.39% year-over-year, and net profit attributable to shareholders of RMB 242.68 million ($33.71 million), up 56.79% year-over-year and in the middle of the range Hopewind forecasted last month (see China Solar PV News Snippets).
Although the report did not disclose revenue breakdown or shipment volumes for its PV business, the company stated that its PV inverter portfolio covers both distributed PV and utility-scale plants, ranging from string inverters as small as 3 kW to central inverters up to 3,125 kW, along with integrated transformer-inverter station solutions.
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