Thoothukudi is a port industrial city in Thoothukudi district in the Indian state of Tamil Nadu. It lies on the Coromandel Coast of the Bay of Bengal. The city is capital and headquarters of the district. According to the Confederation of Indian Industry, Thoothukudi has the second highest Human Development Index in Tamil Nadu, next to Chennai. Thoothukudi City serves as the headquarters of Tamilnad Mercantile Bank Limited, one of the leading private sector banks in India. Major educational establishments in the city include the Government Thoothukudi Medical College, Fisheries College and Research Institute, Tamil Nadu Maritime Academy, V.O. Chidambaram College, Kamaraj College, Anna University, and Government Polytechnic College. The V.O. Chidambaranar Port Authority is one of the major ports in India. Thoothukudi is an emerging energy and industrial hub of South India.
NLC India Limited (NLC) is a central public sector undertaking under the administrative control of the Ministry of Coal, Government of India. It annually produces about 30 million tonnes of lignite from opencast mines at Neyveli in the state of Tamil Nadu in southern India and at Barsingsar in Bikaner district of Rajasthan state. The lignite is used at pithead thermal power stations of 3640 MW installed capacity to produce electricity. Its joint venture has a 1000 MW thermal power station using coal. Lately, it has diversified into renewable energy production and installed 1404 MW solar power plant to produce electricity from photovoltaic (PV) cells and 51 MW electricity from windmills.
Kamarajar Port, formerly Ennore Port, is located on the Coromandel Coast, Chennai about 18 km north of Chennai Port. It is the 12th major port of India, and the first port in India which is a public company. The Kamarajar Port Limited is the only corporatised major port and is registered as a company. Chennai Port Trust acquired around 67% stake of Centre in the Kamarajar Port Limited on 27 March 2020. The remaining 23 percent was already held by the Chennai Port Trust.
Tata Power Company Limited is an Indian electric utility and electricity generation company based in Mumbai, India and is part of the Tata Group. With an installed electricity generation capacity of 14,707 MW out of which 5847 MW is from Non-Conventional(Green Energy) sources rest from thermal, making it India's largest integrated power company. In February 2017, Tata Power became the first Indian company to ship over 1 GW solar modules.
The Calcutta Electric Supply Corporation (CESC) is the Kolkata-based flagship company of the RP-Sanjiv Goenka Group, born from the erstwhile RPG Group, under the chairmanship of businessman Sanjiv Goenka. It is an Indian electricity generation and the sole distribution company serving 567 square kilometres (219 sq mi) of area administered by the Kolkata municipal corporation, in the city of Kolkata, as well as parts of Howrah, Hooghly, 24 Parganas (North) and 24 Parganas (South) districts in the state of West Bengal. It also serves power distribution in Kota, Bikaner and Bharatpur in Rajasthan under the name CESC RAJASTHAN. It serves 3.0 million consumers approximately, which includes domestic, industrial and commercial users.
Tamil Nadu has the second largest economy of any state in India. The state is also the most industrialised in the country. The state is 48.40% urbanised, accounting for around 9.26% of the urban population in the country, while the state as a whole accounted for 5.96% of India's total population in the 2011 census. Services contributes to 54% to the gross domestic product of the state, followed by manufacturing at 33% and agriculture at 13%.
Wind power generation capacity in India has significantly increased in recent years. As of 30 September 2024, the total installed wind power capacity was 47.36 gigawatts (GW). India has the fourth largest installed wind power capacity in the world. Wind power capacity is mainly spread across the southern, western, and northwestern states. The onshore wind power potential of India was assessed at 132 GW with minimum 32% CUF at 120 m above the local ground level (agl). Whereas, the estimated potential at minimum 25% CUF is 695 GW at 120 agl.
The Vaigai Dam is built across the Vaigai River near Andipatti, in the Theni district of Tamil Nadu, South India. Near the dam, the Government of Tamil Nadu has constructed an Agricultural Research Station to research the cultivation of various crops, including rice, sorghum, black gram, cowpea and cotton.
Tamil Nadu Electricity Board is a power generation and distribution company owned by Government of Tamil Nadu, India. It was created as a regulated monopoly under section 131 of the Electricity Act (2003) as a successor of the erstwhile Tamil Nadu Electricity Board. It is the largest State Electricity Board (SEB) in the country in terms of number of consumers.
Ennore, also spelt Eṇṇūr, is a neighbourhood in Chennai, India. Ennore is situated on a peninsula and is bounded by the Korttalaiyar River, Ennore Creek and the Bay of Bengal. The creek separates south Ennore from the north Ennore which covers major portions of North Chennai Thermal Power Station and Ennore Port. The neighbourhood is served by Ennore railway station. Over the years Ennore has become the hub of a range of industrial projects, mainly thermal power stations, fertilizer factories, industrial ports and coal yards.
The Mettur Thermal Power Station is a coal-fired electric power station located in [Thoppur-Mettur Dam-Bhavani-Erode Rd, Mettur, Tamil Nadu 636406] Salem district of Tamil Nadu. It is operated by Tamil Nadu Generation and Distribution Corporation Limited. The power station was commissioned during various periods from 1987 and this is the first inland thermal Power Station of TANGEDCO.The coal from Mahanadi Coalfields Limited and Eastern Coalfields Limited are transported to the load ports of Paradip (Orissa), Vizag and Haldia. Thereafter the coal is transported to the discharge ports of Ennore and Tuticorin by ships. From Ennore Port the coal is transported again through rail to Ennore Thermal Power Station and Mettur Thermal Power Station.
The Ennore Thermal Power Station is a coal based power plant located in Chennai Ennore, Tamil Nadu.
The North Chennai Thermal Power Station is a power station situated about 25 kilometres (16 mi) from Chennai city. It is one of the major power plants of Tamil Nadu and has a total installed capacity of 1,830 MW (2,450,000 hp).
The Department of Energy of state of Tamil Naduis one of the departments of Government of Tamil Nadu. The department was established in 1993 and is responsible for the production and distribution of energy.
Thoothukudi Thermal Power Station is a power plant situated near newport of Thoothukudi in Tamil Nadu, India, on the sea shore of Bay of Bengal.
The Papanasam dam also known as Karaiyar Dam is located 49 kilometres (30 mi) away from Tirunelveli in Tamil Nadu, India. The dam is used to irrigate 86,107 acres (34,846 ha) of paddy fields in Tirunelveli and Tuticorin districts.
Vallur Thermal Power Station is a power plant located in Vallur, Thiruvallur district, India. The power plant is operated by NTPC Tamil Nadu Energy Company Limited, a joint venture between NTPC Limited and TANGEDCO and has three units with 500 MW each.
GMR Vasavi Diesel Power Plant, owned by GMR Power Corporation Limited, was a private-owned power plant located in Basin Bridge, Chennai. It was a 200-MW LSHS fuel power plant of the GMR Group. The plant was based on two-stroke diesel engine technology from MAN B&W, Germany. It was the state's first plant commissioned by the private sector. The plant was decommissioned in 2018.
Basin Bridge Gas Turbine Power Station is a state-owned gas fuel-based power plant located in Basin Bridge, Chennai. It has a capacity of 120 MW and is operated by the Tamil Nadu State Electricity Board.
The economy of Salem, Tamil Nadu is mostly influenced by Information Technology, Steel, Textile industry, Agriculture and more other fields. Salem is mostly known as Steel city and Mangoes city of India. The gross domestic product (GDP) of Salem city is 12,134.10 GDP and (YOY) is 10.31. It is the third-largest district economy in Tamil Nadu while GDP growth in Chennai GDP 20,847.32 (1), Coimbatore GDP 23,371.63 (2), Madurai GDP 10,401.02 (5), Tiruchirappalli GDP 10,493.93 (4). Salem has one Special Economic zone over 40 in Tamil Nadu, ELCOT has established an IT Special Economic Zone at Jagirammapalayam village, Salem, in an extent of 53.33 acres of land at an investment of Rs. 40.53 crore. Salem district also have local planning authority called Salem Local Planning Authority for development of Salem City Corporation area and Salem Metropolitan Area. And also for suburbs in Salem district.
₹ 65,177.10 crore (equivalent to ₹770 billionorUS$9.0 billion in 2023) (2019–20) [1] 
₹ −11,964.93 crore (equivalent to ₹−140 billionorUS$−1.6 billion in 2023) (2019–20) [1] 
