The first use of electricity on a significant scale in Thailand was the lighting of the Grand Palace on the occasion of the birthday of King Chulalongkorn's (Rama V) on 20 September 1884.
On 1 August 1958 the Metropolitan Electricity Authority (MEA) was established by merging the Bangkok Electric Works and the Electrical Division of the Public Works Department to be responsible for providing power supply in Bangkok, Nonthaburi, and Samut Prakan [REF].