Consumer Protection: Proposed Labeling Rules for Solar Panels, Inverters and Energy-Storage Batteries
The Office of the Consumer Protection Board (OCPB) has opened a public consultation on three draft notifications of the Committee on Labels covering solar panels, inverters used with solar panels, and batteries for storing energy generated from solar panels. The consultation runs from 13–27 August 2026. Although, the notifications remain in draft form, they are an important development for manufacturers, importers, distributors, dealers, installers, and businesses supplying rooftop-solar and energy-storage systems.
The Proposed Labeling Rules:
The three draft notifications would regulate labeling requirements for the principal components of a solar-energy system: solar panels, inverters, and energy-storage batteries. The initiative follows increased regulatory attention to consumer protection in the solar sector, including concerns regarding the quality and safety of solar equipment and installations.
Designation of these products as label-controlled products is significant because labeling under the Consumer Protection Act is more than a product-branding requirement. The regulatory framework is intended to ensure that consumers receive sufficient and accurate information about the products they purchase, including information prescribed by the Committee on Labels. The precise disclosures, language requirements, and presentation requirements will ultimately depend on the final wording of each notification.
For solar products, compliance can be particularly complex because consumers frequently purchase an entire rooftop-solar or solar-plus-storage system rather than individual components. The panels, inverter, and battery may be manufactured by different companies, imported by different entities, and supplied to the consumer through a distributor or installer. As a result, businesses should consider labeling compliance across the entire supply chain rather than treating it solely as a manufacturer’s responsibility.
Key Compliance Issues for Businesses:
Manufacturers and importers should be particularly attentive to the proposals because they generally control product specifications, labels, packaging, and accompanying documentation. Imported equipment may present additional challenges where the original labels and manuals are prepared for international markets. Importers should therefore assess whether Thai-language supplementary labels will be required and whether information on those labels is consistent with the manufacturer’s original product information.
This review should extend beyond literal translation. Product names, model numbers, technical specifications, manufacturer and importer details, instructions, warnings, and other required disclosures should be consistent across the product label, packaging, manuals, technical specifications, warranties, and other customer-facing materials. Inconsistencies between these materials can create both regulatory and consumer-dispute risks.
Distributors, dealers, and installers should also monitor the proposals closely. A rooftop-solar provider may purchase panels, an inverter, and a battery from different suppliers and then offer them to the consumer as a single installed system. Businesses operating this model should consider incorporating label verification into their procurement and installation procedures, including checking that required labels are present, correspond to the correct product model, and are not removed or obscured during installation.
The proposals may therefore have consequences beyond the physical product label. Depending on the final requirements, businesses may need to review packaging, Thai-language disclosures, product specification sheets, user instructions, warranties, quotations, sales proposals, online product descriptions, and information provided by dealers and installers. Not all of these materials will necessarily constitute regulated labels, but consistency between mandatory product information and commercial representations should form part of the compliance review.
Supply-Chain Contracts and Existing Inventory:
Businesses should also review how responsibility for labeling compliance is allocated contractually. Supply, import, distribution, dealer, and installation agreements often contain general obligations to comply with applicable law but may not specifically address responsibility for preparing Thai-language labels, verifying technical information, implementing regulatory changes, or bearing the cost of relabeling noncompliant products.
For importers dealing with overseas manufacturers, this can be commercially important. Changes to factory-applied labels or packaging may require manufacturing lead times and additional costs. Agreements should therefore be reviewed to determine who must implement regulatory changes, who bears the associated costs, and what remedies apply where products supplied into the market do not satisfy mandatory labeling requirements.
Existing inventory will be another important issue when the final notifications are issued. Businesses may already hold substantial stocks of solar panels, inverters, and batteries bearing existing labels, while additional products may be in transit or subject to outstanding purchase orders. Companies should monitor the final rules for their effective dates and any transitional provisions, including whether existing inventory can continue to be sold or whether supplementary labeling will be permitted. Businesses should not assume that existing products will automatically be grandfathered.
Labeling, Product Safety, and Enforcement:
The proposed rules should also be considered alongside broader product-safety regulation. The OCPB has previously highlighted consumer concerns relating to allegedly substandard solar installations and has emphasized the importance of consumers being able to identify relevant product, manufacturer, importer, origin, and standards information.
Labeling compliance and technical compliance should therefore be managed as related but distinct requirements. A product’s compliance with an applicable industrial or technical standard does not necessarily establish compliance with consumer-labeling requirements, while a correctly labeled product may still fail to satisfy separate product-safety requirements.
Noncompliance with labeling requirements can carry criminal consequences under the Consumer Protection Act. The OCPB has stated that a seller of a label-controlled product without the required label, or with an incorrect label where the seller knows or ought to know of the noncompliance, may face imprisonment for up to six months, a fine of up to THB 100,000, or both. For manufacturers producing goods for sale and persons ordering or importing goods for sale, the potential penalty may increase to imprisonment for up to one year, a fine of up to THB 200,000, or both.
What Businesses Should Do Now:
As the notifications remain in draft form, immediate changes to product labels may be premature. However, businesses can begin preparing by identifying affected product models and collecting their current labels, packaging, manuals, and Thai-language product information. Importers should determine which labeling changes can be made locally and which would require cooperation from overseas manufacturers.
Businesses should also map responsibility throughout their distribution networks, review supply and dealer agreements, and identify existing inventory that could be affected by the new requirements. Once the final notifications are issued, particular attention should be given to the exact product scope, mandatory disclosures, Thai-language requirements, effective dates, and transitional arrangements.
Key Takeaways:
- The OCPB is consulting on three draft labeling notifications covering solar panels, solar inverters, and batteries used for solar-energy storage.
- The proposals are relevant to manufacturers, importers, distributors, dealers, installers, and integrated rooftop-solar and energy-storage providers.
- Businesses should review not only physical labels but also packaging, Thai-language product information, technical documentation, sales materials, and downstream dealer practices.
- Importers should assess whether existing global labels and packaging can satisfy the proposed requirements or whether local supplementary labeling or factory changes may be necessary.
- Supply-chain agreements should clearly allocate responsibility and costs for labeling compliance and regulatory changes.
- Businesses holding substantial inventory should monitor effective dates and transitional provisions carefully.
- Companies can use the consultation period to conduct a preliminary product and labeling audit so they are prepared to implement the final requirements efficiently.
Author: Panisa Suwanmatajarn, Managing Partner.
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