On 24 August 2026, Thailand submitted notification G/TBT/N/THA/822, proposing a draft notification of the Committee on Labels on the determination of solar panels as label-controlled products (Draft Notification of the Committee on Labels Re: Determination of Solar Panels as Label-Controlled Products).

The draft designates solar panels as label-controlled products. Labels must carry, as applicable, text, pictures, artwork or images that do not mislead consumers about the nature of the product, and must be presented clearly and legibly in Thai, or in a foreign language together with a Thai translation. The labelling requirements do not apply to label-controlled products manufactured for export and not sold in Thailand.

Required label content

Under the notification, solar panel labels must state the following:

• The category or type name of the product, so that it can be identified.

• The name or trademark, registered in Thailand, of the manufacturer (for products sold in Thailand).

• The name or trademark, registered in Thailand, of the orderer or importer (for products sold in Thailand).

• The country of manufacture, where the product is imported.

• The business address of the manufacturer (for sale), or of the orderer or importer (for sale in Thailand).

• The dimensions (mm) and mass (kg) of the product; units may be written in full, abbreviated or as symbols.

• The type of solar panel, for example monocrystalline, polycrystalline or thin-film.

• Maximum power (Pmax); units may be written in full, abbreviated or as symbols.

• Maximum power voltage (Vmp); units may be written in full, abbreviated or as symbols.

• Maximum power current (Imp); units may be written in full, abbreviated or as symbols.

• Open-circuit voltage (Voc); units may be written in full, abbreviated or as symbols.

• Short-circuit current (Isc); units may be written in full, abbreviated or as symbols.

• Power tolerance, expressed in watts or as a percentage; units may be written in full, abbreviated or as symbols.

• Module efficiency.

• Intended use, so that consumers understand the purpose, for example use as part of a solar power generation system to convert solar energy into direct current electricity.

• Usage or storage advice, for example installation in accordance with electrical installation standards and relevant laws and regulations; before installation, storage in a flat, shaded, dry and well-ventilated place; and reviewing the relevant information before installation.

• Warnings or precautions, for example that the product must not be repaired or modified; that the product generates voltage when exposed to sunlight, so terminals must not be disconnected or touched; that installation must be carried out by qualified personnel; and that the manual must be studied and relevant rules, notifications and laws observed. This text must be larger than other text, printed in a colour contrasting with the background, and clearly legible and distinguishable from other text.

• The date of manufacture (day/month/year); where this cannot be indicated precisely, the production week and year, or the production month and year, may be given instead.

• The expiry date or recommended service life (day/month/year), only for products with a service life.

• The price in Thai baht; other currencies may be indicated as well.

For items (18) and (19), the date must be shown in day, month and year order. The month may be written in figures or words, and the year may follow the Buddhist or the Gregorian calendar. Where the day, month and year are not shown in that order, explanatory text or letters must be added so that consumers understand the format.

All text on the label must be clearly visible and easy to read. The font size must suit the size of the label, and the height of the letters must be at least 2 mm.

Where the required label content cannot all be shown correctly in one place (for example, on the product itself), one or more of the text, pictures, artwork or images may be shown on any part of the product, on the container or packaging, inserted in or attached to the product, container or packaging, in documents or manuals accompanying the product, or on a sign posted on or displayed with the product, container or packaging. When taken together, the label content in all locations must still be clearly visible and easy to read.

The notification will take effect 60 days after publication in the Royal Gazette.

What exporters should do

Suppliers of solar panels and PV modules for the Thai market should prepare Thai-language labels covering all 20 items, verify the wording and layout with the local importer or distributor, and check that the lettering height and contrast requirements are met. Products manufactured solely for export and not sold in Thailand fall outside the labelling requirement.