Thac Ba Hydropower Joint Stock Company is a Vietnam-based utility enterprise primarily engaged in the generation, transmission, and wholesale distribution of hydroelectric power, as well as the provision of specialized engineering and technical services for the energy sector. Originally established in 1971 following the commissioning of Vietnam's first major hydroelectric facility and converted into a joint stock company in 2006, the company is headquartered in Yen Binh District, Yen Bai Province, Vietnam, and operates as a key power generation subsidiary of Refrigeration Electrical Engineering Corporation (REE Corporation).
The company's core operations and portfolio of products and services comprise: electricity generation and wholesale supply to the national power grid through the operation and management of the 120-megawatt (MW) Thac Ba Hydropower Plant located on the Chay River; operation, maintenance (O&M), and asset management services for third-party hydroelectric stations and electrical substations; overhaul, refurbishment, and mechanical-electrical repair services for turbines, generators, transformers, and switchgear; technical testing, diagnostic inspection, calibration, and commissioning of high-voltage electrical equipment and control instrumentation; power engineering consultancy, feasibility assessment, and project management services for small and medium renewable energy facilities; specialized vocational training and technical workforce development for plant operators and electrical engineers; and water resource regulation services, including reservoir management, flood mitigation, and agricultural irrigation support for downstream river basins.
In recent developments, Thac Ba Hydropower Joint Stock Company has executed major strategic and operational initiatives to modernize its core assets and expand its energy footprint. The company has undertaken comprehensive equipment rehabilitation and technical upgrade programs across its power generation units to improve turbine efficiency, optimize automation systems, and extend the operational life of the Thac Ba facility while bolstering dam safety and flood prevention standards. To broaden its regional generation capacity, the company has advanced investments in downstream expansion projects, notably participating in the development and integration of the 18.9 MW Thac Ba 2 Hydropower Project. Additionally, the company has expanded its third-party technical service contracts across Northern Vietnam, delivering specialized maintenance and testing solutions to regional power producers, while actively evaluating potential complementary renewable energy opportunities, including floating and ground-mounted solar photovoltaic installations across its managed reservoirs and land holdings.