A certificate is not a regulation. It is a piece of paper that says a product has been tested against a regulation — and the interesting thing about the certificates handed out in Yancheng, Jiangsu province, is what they say about the regulation they anticipate. China’s National Technical Committee on Solar Photovoltaic Systems (SAC/TC90) presented the first certificates under the country’s mandatory national PV module standards to 11 companies: GCL Perovskite, JA, JinkoSolar, Jolywood, TCL Zhonghuan, Astronergy, Trinasolar, AIKO, LONGi, Tongwei, and Ronma Solar. The standards themselves do not take effect until June 1, 2027. The certificates have arrived seven months early, and the list of who got them first is the news.

The two standards are GB 47739-2026, Safety Requirements for Photovoltaic Modules, and GB 47740-2026, Requirements for Nameplate Labeling of Photovoltaic Modules. Published on May 25, 2026, they are China’s first mandatory national standards specifically covering PV modules. That “first” matters, and so does the word “mandatory.” China has had voluntary module standards and industry norms for years; what changes in June 2027 is that compliance stops being a market signal and becomes a legal condition of selling a module in China at all.

What was certified, and under what

The certificates cover both standards together. GB 47739-2026 addresses electrical safety, mechanical strength, fire protection, harmful-substance control, and hot-spot endurance. GB 47740-2026 covers nameplate information, data retention, and measurement traceability. One standard asks whether the module is safe to install and operate; the other asks whether what is printed on the module can be believed — and whether the measurements behind the printed numbers can be traced back to a national metrological standard.

The scope of the nameplate standard is worth stating precisely, because it is where the perovskite angle lives. The published preview of GB 47740-2026 states that it applies to the nameplate labelling of crystalline silicon photovoltaic modules and thin-film photovoltaic modules intended for long-term outdoor use, and that it does not apply to space-based or concentrated photovoltaic modules. Perovskite modules are thin-film modules. They are inside the scope, not outside it — and that is the point of this story. These are general module standards, not perovskite-specific rules, and GCL Perovskite’s presence on the first certificate list means a perovskite manufacturer has passed the same product-level gate as the silicon majors, on the same terms.

One qualification belongs in the lede, before the analysis. The reporting available to this desk — TaiyangNews’ November 3 account of the Yancheng conference — does not say which modules each company had certified, how many product lines were covered, or which certification body performed the testing. A certificate for a company’s flagship module is not a certificate for its whole catalogue.

The two standards, and why they are two

GB 47739-2026 is the physical standard. Its five named domains — electrical safety, mechanical strength, fire protection, harmful-substance control, and hot-spot endurance — map onto the ways a module actually fails in the field: insulation and shock protection, wind and snow loads, flame behaviour, what the module contains, and the failure in which a shaded or defective cell is driven in reverse by the rest of the string and heats until it damages the module.

For perovskite modules, two of those five domains carry the most weight. Hot-spot endurance is a hard test for any thin-film module, because the absorber is a thin deposited layer rather than a thick wafer, and the current paths and bypass-diode arrangements that protect silicon modules do not transfer automatically to a new cell architecture. Harmful-substance control is the domain that touches the lead in lead-halide perovskite absorbers. The standard’s specific substance limits are not stated in the reporting consulted for this article, and this desk will not guess at them — but the fact that the safety standard names harmful-substance control as one of its five domains means a perovskite module’s chemistry is part of what certification examines, not an afterthought to it.

GB 47740-2026 is the paperwork standard, and it is the more consequential of the two for how the market actually works. A nameplate is the module’s identity: model, rated power, electrical parameters, manufacturer. The standard sets what must appear and requires that measurement results for electrical performance parameters be traceable to the national metrological standard, in accordance with IEC 60904-4. That traceability requirement is the standard’s teeth. A watt on a nameplate is a claim about a measurement; the standard requires that the measurement chain behind the claim be auditable back to a national reference. In a market where nameplate power has been a chronic source of dispute between manufacturers, distributors, and project developers, a mandatory traceability rule is a market-discipline instrument, not a labelling nicety.

The five-standard package and the 2027 calendar

GB 47739 and GB 47740 are two of five mandatory national standards MIIT is rolling out for the solar industry, and the other three explain the timing. GB 29447-2026, GB 47835-2026, and GB 47834-2026 cover energy-consumption requirements for polysilicon and monocrystalline silicon production and minimum energy-efficiency values and efficiency grades for crystalline silicon modules and inverters. Those three take effect on January 1, 2027. The safety and nameplate standards follow on June 1, 2027.

MIIT clarified how the package works in a frequently-asked-questions document issued on September 7, 2026, and the clarifications are where the standards acquire their bite. Under Article 25 of China’s Standards Law, products that do not meet mandatory standards cannot be produced, sold, imported, or supplied for distributed or large-scale projects — and MIIT confirmed that products sold domestically must comply once the standards are in force regardless of when they were manufactured. Stock made before the implementation date is not exempt; it must be reworked and retested, or it cannot be sold. Regulators will begin product quality spot checks after the standards take effect, with inspections at both national and county levels.

Three further clarifications from the September FAQ deserve attention. First, export products are exempt: modules manufactured for export need not comply with China’s mandatory standards, with technical requirements determined by the export contract instead. MIIT also noted that China’s domestic safety requirements and the IEC 61730 series do not necessarily have to be met simultaneously. Second, the FAQ sets a mechanical-load test rule: the test load must be based on the design load with a safety factor of at least 1.5 — a module designed for a 2,400 pascal front-side load, for example, must withstand a test load of at least 3,600 pascals. Third, for modules above 250 W, the difference between actual maximum power and nominal nameplate power cannot exceed 5% of the manufacturer’s declared tolerance — a direct answer to the nameplate-inflation problem.

The five standards, MIIT said, are “important technical tools for regulating market competition and supporting production-capacity management in the PV industry.” That sentence is the honest statement of intent. China has spent two years wrestling with overcapacity and price wars in its solar manufacturing sector, and a mandatory standard that disqualifies non-compliant product is a capacity-management tool that works without a single factory closure order.

Why GCL Perovskite’s name on the list matters

Ten of the eleven names are familiar: JA, JinkoSolar, Trinasolar, LONGi, Tongwei, Astronergy, AIKO, Jolywood, TCL Zhonghuan, Ronma Solar — the silicon mainstream. GCL Perovskite is the eleventh, and the only one whose business is built on a thin-film absorber chemistry that was still a laboratory curiosity a decade ago.

The company — formally Kunshan GCL Optoelectronic, in which polysilicon producer GCL Technology holds a stake of about 40% — opened its GW-scale production base in Kunshan, Jiangsu province, in June 2025, with a first-phase capacity of 1 GW, a target of 2 GW, and a total planned investment of 5 billion yuan, according to the Suzhou municipal government. In September 2026 it completed an end-to-end production run on that line, from raw-material intake to large-area modules, and said commercial deliveries were gradually increasing as its focus shifted to production stabilisation and yield ramp-up. Its 2 m² single-junction perovskite module has received third-party certification to IEC 61215, and its perovskite–crystalline-silicon tandem module has received both IEC 61215 and IEC 61730 certification, according to the company’s announcements as reported in trade coverage. Published 2026 shipment guidance for the company sits in the range of 50 to 100 MW — a modest figure against a 1 GW line, and a reminder that the Kunshan plant is still in its ramp year.

The gate, not the starting gun

It is worth being precise about what these certificates do and do not mean, because the temptation to over-read them runs in both directions.

They do not mean GCL Perovskite’s modules are now the equal of silicon modules in the field. Certification under GB 47739-2026 is a safety and endurance test, not a durability guarantee; it says the module passed the specified tests, not that it will survive twenty-five years on a rooftop. The reporting does not state which product lines were certified, and perovskite’s long-term outdoor durability remains the open question for the whole technology — the same question that sits behind Japan’s decision, reported by this desk last week, to exclude perovskite modules entirely from its proposed solar-recycling regime because no processing route for them exists yet. China is certifying the module as a product; Japan is asking what happens to it at end of life. Both can be right at once, and the gap between the two answers is a measure of how much of the perovskite lifecycle is still unbuilt.

What they do mean is that the gate is passable, and that the first company through it with a perovskite module is the one with the largest production line. The Chinese module market is moving from a regime in which standards were a voluntary differentiator to one in which they are a condition of sale, and the perovskite industry’s leading manufacturer has chosen to be early rather than exempt.

What to watch

The first question is breadth. The Yancheng list has eleven names; the Chinese module industry has many more manufacturers, including smaller perovskite makers whose modules have not yet been certified to anything. Watch whether the next certificate round, between now and June 2027, extends to other perovskite manufacturers — and whether any fail. A failure would be as informative as a pass: it would show which of the five safety domains is the binding constraint for the technology.

The third question is the harmful-substance domain, and specifically whether GB 47739-2026’s substance provisions become the de facto lead-content rule for perovskite modules sold in China. The standard’s limits are not in the reporting consulted for this article, and no perovskite-specific substance threshold has been published in the material reviewed. If a specific limit for lead in module materials emerges from the implementation guidance, it will be the single most important regulatory number for the perovskite industry in China — more important than any efficiency record.

The bottom line

China’s first mandatory national standards for PV modules have their first certificates, and the list is eleven companies long — ten silicon majors and one perovskite manufacturer. The standards themselves, GB 47739-2026 on safety and GB 47740-2026 on nameplate labelling, were published May 25, 2026 and take effect June 1, 2027, as part of a five-standard package that also imposes efficiency and energy-consumption rules from January 1, 2027. Under MIIT’s September clarification, non-compliant modules cannot be sold domestically regardless of when they were made, while exports are exempt and spot checks begin on the effective dates.

For the perovskite industry, the significance is not that a perovskite-specific rule has arrived — none has. It is that the general rule has arrived, that it covers thin-film modules, and that the manufacturer with the largest perovskite production line has passed it first, on the same terms as the silicon giants. The module market perovskite makers must enter now has a mandatory gate, and GCL Perovskite is already through it.

No investment recommendation is made or implied anywhere in this article.

Sources and further reading

  • TaiyangNews (November 3, 2026), “China Solar PV News Snippets — November 3, 2026” — the primary source for the Yancheng conference, the eleven certified companies, the two standards and their subject matter, the May 25, 2026 publication date, the June 1, 2027 effective date, and the statement that these are China’s first mandatory national standards specifically covering PV modules. Also the source for MIIT’s October proposal of tougher manufacturing standards, including higher efficiency requirements for cells and modules.
  • MIIT frequently-asked-questions document on the five mandatory PV standards (issued September 7, 2026), as reported by OPIS and PV Tech — the source for the five-standard package (GB 29447-2026, GB 47835-2026, GB 47834-2026 effective January 1, 2027; GB 47739-2026 and GB 47740-2026 effective June 1, 2027), Article 25 of China’s Standards Law, the rule that domestically sold products must comply regardless of manufacture date, the export exemption, the JJF unified traceability system for module measurements, the 1.5 minimum safety factor for mechanical-load testing (2,400 Pa design load → 3,600 Pa test load), the 5% power-tolerance rule for modules above 250 W, the statement that domestic safety requirements and IEC 61730 need not be met simultaneously, and MIIT’s description of the standards as tools for regulating market competition and supporting production-capacity management. Spot checks at national and county level after the standards take effect are also from this coverage.
  • GB 47740-2026 preview, China Standards (chinastandards.org) — the source for the standard’s scope (crystalline silicon and thin-film PV modules for long-term outdoor use; space-based and concentrated PV excluded), its issuance by the State Administration for Market Regulation and the Standardization Administration of China, its jurisdiction under MIIT, and the requirement that electrical performance measurements be traceable to the national metrological standard in accordance with IEC 60904-4.
  • TaiyangNews (September 23, 2026), “GCL’s GW-Scale Perovskite Module Line Completes Production Run” — the source for the completion of the end-to-end production run at GCL Perovskite’s Kunshan line, the gradual increase in commercial deliveries, and the IEC 61215 certification of the 2 m² single-junction module and IEC 61215 plus IEC 61730 certification of the perovskite–crystalline-silicon tandem module.
  • Suzhou municipal government reporting, via Troy Technical’s GCL Optoelectronic company profile (updated September 2026) — the source for the Kunshan base’s total planned investment of 5 billion yuan, the 2 GW target capacity, the 1 GW first phase, the June 2025 opening, and GCL Technology’s stake of about 40% in GCL Optoelectronic. The 2026 shipment guidance of 50–100 MW is from the I-S3 review of the perovskite sector, citing GCL announcements and trade reporting; it is reported here as published guidance, not as a verified shipment figure.

A note on sourcing: the specific test limits inside GB 47739-2026 — including any harmful-substance thresholds — are not stated in the reporting consulted for this article, and no such figure is quoted. The identity of the certification body, the specific product lines certified for each of the eleven companies, and the exact date of the Yancheng conference are likewise not stated in the sources consulted and are not asserted here. Background on hot-spot failure, nameplate traceability, and perovskite module structure is drawn from the standard photovoltaic literature and this desk’s prior reporting, including the November 4, 2026 article on Japan’s proposed solar-recycling law. No market-size figure is quoted, because none is needed for a certification milestone.