HINDALCO, an aluminium factory located at Renukut owes its site basically to

Renukoot was chosen primarily for its ready and cheap supply of electricity, a decisive locational factor for energy‑intensive aluminium smelting. The plant obtains power from the Rihand Dam and nearby thermal stations, which made the site economically viable for large‑scale aluminium production [1]. While bauxite supply (from Lohardaga and nearby regions) also influenced siting and allowed vertical integration of raw material sources, the overriding requirement for abundant, continuous power is the basic reason the Hindalco unit was established at Renukoot. Contemporary accounts likewise emphasize proximity to coal, dams and consequent assured water and power as key motives for locating the primary aluminium works there [2].

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 11: Industries > 3. The Hindustan Aluminium Corporation Ltd. (HINDALCO), Renukoot > p. 40
2. [2] https://www.pudr.org/publicatiosn-files/1996-Sep-The%20Other%20Side%20of%20the%20Success%20Story.pdf