Essential Guidelines: Does Your Solar Installation Require a Factory License Amendment (รง.4)?

1. Document Preparation: The entrepreneur prepares all necessary application documents for the solar system installation.
2. Submission: Submit the application to the Provincial Industry Office (PIO).
3. Verification: The PIO reviews the documentation and officially accepts the application.
4. Public Notice: A public announcement must be posted for at least 15 days to gather community feedback and opinions.
5. Public Opinion Summary: The PIO summarizes the results of the public hearing process.
6. Fee Payment & Approval: The PIO instructs the entrepreneur to pay the required fees and issues the formal Certificate of Factory Expansion.

Key Requirements to Note

• Threshold for Solar Expansion: A factory is required to apply for an expansion permit if the solar installation capacity is 1 MW or higher.
• Definition of a “Factory” (Ror.Ngor. 4): Under current regulations, a facility is classified as a factory requiring a license if it utilizes machinery exceeding 75 horsepower and employs more than 75 workers.