China to raise minimum capital ratio to 30% for solar manufacturing

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The GCL SI Hefei gigafactory in China.
The draft is part of a raft of proposals which the MIIT said was designed to strengthen the management of the Chinese PV industry. Image: GCL SI

The Chinese Ministry of Industry and Information Technology (MIIT) has issued a draft rule raising the minimum capital ratio for solar PV manufacturing projects to 30%.

The draft is part of a raft of proposals which the MIIT said was designed to strengthen the management of the Chinese PV industry.

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Previously, the minimum capital ratio was 30% for polysilicon plants and 20% for other parts of the solar manufacturing chain like wafer, cell and module production. The draft rules will be open for public consultation until 15 July.

The rule applies to both new projects and expansions of existing facilities.

Among the other proposals, the MIIT said that the annual output of solar manufacturing facilities must not be less than 50% of the total annual production capacity and that spending on research and development (R&D) must account for a minimum of 3% of total sales, and not be less than RMB10 million (US$1.4 million).

Currently, solar manufacturing capacity in China is vastly in excess of global demand. A Bloomberg New Energy Finance (BNEF) report earlier this year found that no new solar manufacturing capacity was needed for the rest of this decade to meet global deployment targets.

Simultaneously, numerous solar PV testing institutions have reported a rise in quality issues and manufacturing defects. Notably, the US’ Clean Energy Associates and Kiwa PVEL published separate reports showing an increase in defects in solar modules.

PV Tech Power published a deep dive into quality concerns earlier this year, as the problem was looming.

The draft includes recommendations for minimum cell, module and inverter efficiencies and the ecological impact of new manufacturing sites.

It also features a list of criteria which will exclude new facilities from approval if they are not met. These include stipulations on inspection, auditing, product sampling and safety and pollution.

7 October 2025
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 7-8 October 2025 is our third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023 and 2024 were a sell out success and 2025 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.
10 March 2026
Frankfurt, Germany
The conference will gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing out to 2030 and beyond.

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