The Electricity Act Article 13

Any Electricity-Generating Enterprise and the Electricity Transmission and Distribution Enterprise, when building or expanding their facilities, shall prepare and submit an application and supporting documentation transferred by the government agency to which the enterprise belongs or the level of the Municipal Government or County (City) Government to the Electricity Industry Regulatory Agency to apply for a permit for the building or expansion project.If the application described in the preceding paragraph requires an environmental impact assessment pursuant to the Environmental Impact Assessment Act, the applicant shall provide documentation from the environmental protection competent authority showing the completion of the review or approval.The building or expansion permit described in the first paragraph of this Article shall be valid for 3 years, but an extension with justifiable reasons may be applied before the expiration of the current permit. The extension period shall not exceed two years.