In 1917 had explorer found lignite at Maemoh, Lampang and gave that location to be a preserve place. After that, government were conducted land and built an office until they could produce and purchase the lignite to other factories as overtime more than 30 years.
In 1968 the government had received an act established the Electricity Generating Authority of Thailand (EGAT).
 
In 1975 Mae Moh Power Plant was established for producing a low cost power plant from lignite in Thailand. Then, they stilled decreasing imports fuel and built the stable for production system of the country.