The 200 MW power plant in Chennai was commissioned in 1999. The entire power generated at this plant is supplied to the Tamil Nadu State Electricity Board presently TANGEDCO.
A distinguishing feature of this plant is a sophisticated sewage treatment unit, the first of its kind in India. GMR Power Corporation, instead of burdening the water supply of the water-starved city of Chennai, has developed a unique method of conserving water. The plant treats 7200 cubic metres of raw sewage per day from Chennai Metropolitan & Sewerage Board to produce 5400 cubic metres of clean water for its own use. As an appreciation for its efforts toward conserving the environment the plant has received the renowned Dr. M.S. Swaminathan Award for Environmental Protection.
This plant has received ISO 14001 and OHSAS 18001 certifications from Det Norske Veritas.