Solar panels 2027 – polysilicon, batch tracking and the EU ban on forced labour
Solar panels may be affected by the EU ban on products made with forced labour from 14 December 2027. Regulation (EU) 2024/3015 prohibits products made with forced labour from being placed on or supplied on the EU market or exported from the EU. For solar modules, a practical question is how information on polysilicon, silicon ingots, solar cells and module assembly can be linked to the specific products being purchased. However, under Article 1.3, the Regulation does not introduce any new general due diligence obligation for all companies; an internal traceability register is therefore a voluntary risk management tool, unless other applicable rules or contracts require more.
Which companies may need to review a solar module supply chain?
This guide is intended for importers, distributors, solar panel buyers, project developers, solar installers and those responsible for supplier compliance. A company's specific responsibilities depend on its role and actual activities. The Regulation applies to products on the Union market, regardless of whether the alleged production occurred inside or outside the EU. A company should not conclude that forced labour has or has not occurred based solely on the supplier's country of origin.
Products that have already reached end users are not covered by the recall procedure regulated in Article 1.2. Other rules, contracts and enforcement actions may still be relevant. The assessment must apply to the actual material flow and the specific batch.
What is a legal requirement and what is a voluntary check?
| Question | Legal status | Practical basis |
|---|---|---|
| Ban on products made with forced labour | Article 3; main application from 14 December 2027 | Identify affected products, components and actual factual data |
| General annual audit of every solar cell supplier | Not introduced as a general new obligation by this Regulation, see Article 1.3 | Voluntary risk-based supplier monitoring or separate contractual requirement |
| Evidence that a specific module batch is suspected | The enforcement process is based on risk-based, factual and verifiable information | Batch ID, production period, facility, traceability and conflicting data |
| The company's temporary sales pause | An internal decision, not automatically an enforcement ban | Internal decision log with scope, responsible person and review |
| Enforcement decision on a ban or withdrawal | Special procedure under the Regulation | Save decision, case number, product identification and actions |
Why is polysilicon particularly difficult to trace?
A standard solar module consists of several stages that may involve different companies. Polysilicon is produced first and then becomes silicon ingots or wafers, solar cells and finally assembled modules. Batches can be split, mixed, renamed and pass through several suppliers. Therefore, a general certificate of a supplier's code of conduct does not automatically show the origin of the material in a specific module series.
A traceability chain should describe what is actually documented. Mark unknown steps as unknown, distinguish the product model from the specific manufacturing batch and note whether the action applies to the relevant time period. A third-party certification or CE marking is not in itself proof of the absence of forced labour in every input material.
Traceability matrix – from material to finished solar panel
| Stage | Example of traceable data | Common knowledge gap |
|---|---|---|
| 1. Polysilicon | Producer, facility, material batch, production date | Unknown origin facility or mixed material |
| 2. Ingot/wafer | Wafer factory and relationship to the included silicon batch | No document linking the delivered wafer batch to the polysilicon |
| 3. Solar cell | Cell manufacturer, production order and included wafer ID | Different article or lot numbers in the suppliers' systems |
| 4. Module | Module factory, serial number, assembly period and delivery batch | Finished module cannot be linked to relevant component batches |
| 5. Purchase and inventory | Invoice, receipt ID, storage location, project and responsible person | Uncertain which customer orders include the investigated batch |
All these fields are suggestions for documentation and should not be described as a mandatory EU standard form. Focus on risk and actual evidence, not on filling as many cells as possible.
Three situations and how they should be handled
Scenario 1 – a general ESG certificate but no batch link
A Swedish importer receives a general code of conduct from the module supplier, but no information about the polysilicon facility. Record the scope of the document, ask about the production stage and affected batches and document that the origin is still unknown. It is not correct to automatically claim that the module is prohibited – or that it has been proven free from forced labour.
Scenario 2 – two suppliers state different lot numbers
A wafer batch has one number on the supplier's packing slip and another with the cell manufacturer. Note both identifiers, request a traceable translation table or production link and limit any internal sales pause to the actually affected goods. Avoid stopping all products from the same supplier without support.
Scenario 3 – the enforcement authority requests documentation
A competent authority requests information about a specific product chain. The Regulation contains special procedures and deadlines that may become relevant in a real case. Preserve the exact wording, receipt date, source of the information and responsible person. Let the competent function assess the scope, response time and any need for legal assistance. A private Excel file does not replace the authority's request or a formal response.
Seven steps for a traceable and proportionate check
- Identify a specific module model and a defined manufacturing or delivery batch.
- Map the known stages of polysilicon, wafer, solar cell and module, with a source for each link.
- Request additional factual data where documentation is missing; clearly distinguish supplier claims from verified evidence.
- Assess relevance, time period, possible material mixing and conflicting sources. Avoid unfounded geographical generalisations.
- Document risk indicators and uncertainty with factual sources instead of automatic certification claims.
- Consider whether a temporary, voluntary internal inventory or sales pause is needed. Name the responsible person, affected batches and review date.
- Follow up on new information and any enforcement decisions. Do not close the case solely because a checklist shows green.
Common mistakes
- Calling a voluntary polysilicon matrix a mandatory EU form.
- Assuming a general ESG certificate covers every manufacturing facility and batch.
- Confusing an internal purchasing block with an official enforcement ban.
- Reporting unknown production stages as approved without evidence.
- Handling sensitive personal data or unconfirmed allegations in open spreadsheets.
Questions and answers
Will polysilicon traceability become mandatory for all solar panels in 2027?
No, not as a new general documentation obligation solely under Regulation (EU) 2024/3015. However, the ban on products made with forced labour applies from 14 December 2027. Other rules or contracts may entail specific control requirements.
Does the ban also apply to solar panels manufactured in the EU?
Yes. The ban applies to products made with forced labour, regardless of the country of production. Risks must be assessed based on actual information and not geographical stereotypes.
Is CE marking sufficient proof?
No. CE marking refers to other applicable product requirements and does not in itself show that all materials in a module have been manufactured without forced labour.
Must all installers conduct an external supplier audit?
This Regulation does not create such a general new requirement. A voluntary risk assessment or requirement from other law, contracts or customers may still be relevant.
Can we block a batch before an authority has decided?
Yes, a company can make its own internal decision on a sales pause as a risk measure. It is not the same as a binding enforcement decision or a legal conclusion on forced labour.
Related document package: Template package for polysilicon traceability, supplier evidence and batch holds.
Primary sources and control data
Regulation (EU) 2024/3015, especially Articles 1, 3, 4, 14, 17–20 and 39. Commission Guidelines C/2026/4637, published on 3 September 2026, constitute non-binding explanatory support and do not replace the Regulation. Editorial fact check: 12 November 2026. No independent legal review of an actual solar panel company, no customer tests, certifications or batch verifications have been performed. The guide is information for a specific workflow, not individual legal advice.
Templates in this article
Solar Panels 2027 – Polysilicon Traceability, Supplier Declaration and Batch Blocking under the EU Forced Labour Regulation | Word/PDF/Excel
Word/PDF/Excel
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View template: Solar Panels 2027 – Polysilicon Traceability, Supplier Declaration and Batch Blocking under the EU Forced Labour Regulation | Word/PDF/Excel
