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Development of the project was originally funded and undertaken be Daewoo Engineering/Construction Company of Korea as an EPC Contractor in 1993. Daewoo was given a 30-year BOT Agreement from the Government of Lao PDR to develop the hydroelectric resources of the Bolaven Plateau, which had been untapped, but which provided the best site for harnessing hydropower. The plant became operational in September 1999, and has supplied electricity to the Electricity Generating Authority of Thailand (EGAT) without interrupting ever since

GDF SUEZ Energy International, in conjunction with Houay Ho Thai Co., Ltd. became an electricity operator in Laos, with the purchase a controlling stake in the venture in early 2002.

In 2009, Glow Co., Ltd. acquired a 67.25% stake from GDF SUEZ Energy International, whereby Glow Group became the main shareholder of HHPC.

Daewoo Engineering/Construction Company (Korea), an EPC contractor, ventured into Lao PDR hydroelectric resources in Bolaven plateau
23 Sep 1993
Signature of 30-year BOT Agreement (Duration: 1999 – 2029)
27 Jun 1996
Company Establishment
24 Jun 1997
Signature of Power Purchase Agreement with EGAT (Duration: 1999 – 2029)
3 Sep 1999
22 Jan 2002
Partial acquisition of HHPC by Suez Energy International (60% shareholder)
23 Dec 2002
Achievement of Project Financing
28 May 2009
Partial acquisition of HHPC by Glow Group (67.25% shareholder) and Hemaraj Land and Development (12.75% shareholder)