[1] The dam was originally constructed in 1974 for the purposes of irrigation and water supply but after 2002, its water storage also serves as the lower reservoir for the Lam Takhong pumped storage power plant, Thailand's first power plant of that type.

Construction on the Lam Takhong Dam began in 1969 and was completed in 1974, while the pumped storage project was initially proposed in 1975.

Khon Kaen University conducted an environmental impact assessment beginning in 1991 and by 1994, the project was approved for construction.

[3] The power plant and its components were constructed underground to preserve the nature and scenery of the area.

[5] In September 2014, EGAT awarded a US$64.3 million contract to Voith Hydro to supply electromechanical equipment for the expansion of the facility.