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Thailand Plans Mandatory Labeling for Solar Panels, Inverters and Storage Batteries

On 24 August 2026, Thailand notified the WTO of three technical regulations: G/TBT/N/THA/822, G/TBT/N/THA/823 and G/TBT/N/THA/824.

Thailand plans to introduce a mandatory labeling regime for solar panels, PV inverters and PV storage batteries. Products with non-compliant labels will not be allowed to circulate or be sold in the Thai domestic market.

Key content

Competent authorities

Office of the Consumer Protection Board of Thailand

Thai Industrial Standards Institute (TISI), Ministry of Industry

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WTO notification numbers

  • G/TBT/N/THA/822 | Solar panels
  • G/TBT/N/THA/823 | PV inverters
  • G/TBT/N/THA/824 | PV storage batteries

Effective date

  • The formal implementation date is to be determined

Scope of control

  • The three categories of PV and storage products placed on the Thai domestic market
  • Products manufactured exclusively for export and not placed on the Thai market may be exempt from the labeling requirements

Labeling requirements

Language requirements

  • The main label text must be in Thai;
  • Foreign languages may be added, but a complete Thai translation must accompany any foreign-language content, and the text and graphics must not mislead consumers;
  • Label characters must be clear and legible; safety warnings must be larger than body text, and the contrast between background and text must meet visibility requirements;
  • Mandatory information need not be limited to the product itself; it may be distributed across the product nameplate, outer packaging, hangtag or instructions, provided that the combined carriers contain all required information;
  • Production dates may be shown in either the Gregorian or Buddhist calendar.

General information to be labeled

  • Product name and model
  • Name, trademark and full address of the Thai manufacturer or importer
  • Country of origin for imported products
  • Product dimensions, weight and intended use
  • Instructions for use, storage and maintenance
  • Production date; for products with a limited service life, the recommended use-by date
  • Safety warnings

Product-specific technical parameters

  • Solar panels: module type, maximum power, maximum-power voltage/current, open-circuit voltage, short-circuit current, power tolerance and conversion efficiency
  • PV inverters: inverter type, rated AC output power, maximum input voltage, nominal AC voltage, maximum input current, maximum AC output current and maximum conversion efficiency
  • PV storage batteries: battery type, rated capacity, rated voltage, cycle life, charge/discharge rate and operating temperature range, together with the safety warnings applicable to the battery category (lithium and lead-acid warnings are distinct)

1. G/TBT/N/THA/822 (solar panels)

2. G/TBT/N/THA/823 (inverters)

3. G/TBT/N/THA/824 (PV storage batteries)

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