There’s a company called Geontech Ltd. and Korea Environmental Corporation signing an MOU with local electrical supply authority to build a power plant, in Udon Thani province.

https://mgronline.com/local/detail/9620000059179

The source is in Thai language only.

This gives you some idea that the north-east of Thailand will become a big hug in the near future, connecting several countries in Asia via railways and new road systems. It’s part of a connection to One Belt One Road.