The Electricity Generating Authority of Thailand has three thermal power plants, six combined cycle power plants, 24 hydropower plants, eight renewable energy plants, and four diesel power plants, according to Wikipedia.
A large proportion of the electricity generated by EGAT is sold to the Metropolitan Electricity Authority, which supplies the Bangkok region. The Provincial Electricity Authority supplies the rest of Thailand.
The release of three zipped files of data makes it clear that the PEA has not responded to the ransom note that would have been generated by the ransomware after the files were first exfiltrated and then encrypted on-site.
The three files that have been put online weigh in at 1.84GB, 4.4Gb and 2.26GB.
Thailand has a population of about 70 million and nearly nine million people live in the Bangkok region. This means that most of the country is supplied by the PEA.
The country has the highest share of users attacked by ransomware, according to the site Statista, with 9.57%, ahead of the UAE (8.67%) and Iran (8.47%).