Neyveli Lignite Corporation Limited (NLC) was incorporated in 14th November of the year 1956 as a private limited company under the house of Government of India (GOI). It went to public in 7th March of the year 1986. The main core activity of NLC is lignite excavation and power generation using lignite excavated. NLC is having three lignite mines named as Mine I, Mine II and Mine IA. Also raw lignite is being sold to small-scale industries to use it as fuel in their production activities. Also the company provide consultancy in Mining & Power Sector.
In the year 1986, a supplementary feasibility report for first mine expansion and a report on setting up a Power Station of 2 x 210 MW were submitted to the Government of India. The Company along with Engineers India Ltd had entered into a contract with Gujarat Mineral Development Corporation for monitoring expansion of Panandhro mine including construction, supervision, Cost monitoring, inspection and approval of drawing etc. The 400 KV transmission system viz., 400 KV line between Neyveli-Chennai, 400 KV line between Neyveli-Pondicherry along with the switching stations/sub-stations were commissioned in the year 1987. In the year 1988, an agreement was entered into with ICB of India for the preparations of the techno feasibility report for revamping the urea plant in consultation with the original supplier, viz., Technimont, Italy. Four electro static precipitators were erected and commissioned in thermal power station-I during the year of 1990. In the same year of 1990, the 170 Km. long Neyveli-Salem second circuit 400 KV line was commissioned and also the second 315 MVA transformer at Udamalpet sub-station was also commissioned. During the year 1993, a contract was signed with M/s. PDIL, Sindri for installation & Commissioning of an efficient treatment plant for the fertilizer factory. Two Electro Static precipitators of the company were commissioned in Boiler-4 and 7A in the period of 1995. During the year 1996, the company had received a sanction for the addition of 2 units of 210 MW each in thermal power station-I and also in identical year, Bucket wheel excavator was released for rejuvenation works.
The Corporation had take up a sizeable equity stake in the 250 MW lignite-based power project in the year 1998 being established at Srimushnam in the state by Tamil Nadu Industries Captive Power Company Ltd (Ticapco), a subsidiary of BSES Ltd. NLC had entered into an agreement with ST-CMS, an US power generating private company in the year 1999 to set up a 250 mw thermal power station here and to supply lignite. In the year 2000, the company had transferred its Power Transmission System to Power Grid Corporation of India Ltd. Power Finance Corporation (PFC) has committed to extending a loan of Rs 1,000 crore to the Neyveli Lignite Corporation (NLC) for its Mine-II and TPS-II expansion project in the year 2001. During the year 2002, NLC had signed a MoU with Rajasthan government to set-up a lignite-based thermal power station at Barsinger in Bikaner district and also in the same year, the company had unveiled two new units (the first 210-MW unit of TPS-1 and the fourth overburden system of Mine-1A project). The Company had entered into MOU with Tamil Nadu Electricity Board for setting up of 100 MW Thermal Power Station in the year 2003 at Tuticorin in Tamil Nadu. During the year 2004, NLC bagged an ISO quality certification and made a tie up with the Oil & Natural Gas Corporation Ltd (ONGC). The Company had entered into a MoU with Rural Electrification Corporation in the year 2005 for funds up to Rs 2,500 crore and also in the same year made a Joint Venture agreement with Tamil Nadu Electricity Board.
During August of the year 2006, the corporation had signed a MOU with the Government of Gujarat for establishing an integrated Lignite Mine of 8 million tones per annum linked to power project of 1000 Mega Watt in South Gujarat in First phase, to be enhanced to 1500 Mega Watt in second phase with linked mine capacity of 12 million tones per annum at a cost of Rs.7500 crores. As at July 2007, the company had entered into a joint venture agreement (JVA) with Mahanadhi Coal Fields, a subsidiary of Coal India, and Hindalco Industries for developing and mining Talabira II & III coal blocks. In May of the year 2008, the Government of India had accorded approval for development of 1,000 MW (2 X 500 MW) coal based thermal power project at Tuticorin, Tamil Nadu.
Neyveli Lignite (NLC) along with Northern Coalfields (NCL) plans to invest Rs 52 billion for setting up a 1,000 mw pit-head power station at Gorbi mines in the Singrauli Coalfields. The project also includes mine development. The two PSUs have already signed a memorandum of understanding (MoU). The two companies would be setting up a 50:50 special purpose vehicle for the pit-head power unit and mine development.