Tamil Nadu ranks third in cement production in India (First Andhra Pradesh, Second Rajasthan). Among 10 largest cement companies in India as on 2018, Ramco Cement and India Cement find prominent place. And also Tamil Nadu stands second in number of cement plants with 21 units against 35 units in Andhra Pradesh.

The Per capita GSDP of Tamil Nadu also ($ 2,200) which is higher than that of many other States in India. Per capita GSDP of Tamil Nadu is nearly 1.75 times higher than the national average, as per 2018 data. In term of Rs the per capita income in Tamil Nadu was Rs 1,03,600 in 2010-11 and it has increased to Rs 1,88,492 in 2017-18 as per the Budget figures 2018.

Maharashtra has the highest number of internet subscribers in the country at 29.47 million, followed by States like Tamil Nadu, Andhra Pradesh and Karnataka. According to government data, India had a total of 342.65 million internet subscribers at the end of March, 2016. Tamil Nadu had 28.01 million subscribers, while its neighbours Andhra Pradesh and Karnataka had 24.87 million and 22.63 million, respectively.

(i) Tamil Nadu has a three tier health infrastructure comprising hospitals, primary health centres, health units, community health centres & sub-centres.
(ii) As of March 2015, the state had 34 district hospitals, 229 sub-divisional hospitals, 1,254 primary health centres, 7,555 sub-centres and 313 community health centres.

Wind energy: Muppandal wind farm supplies the villagers with electricity for work. Wind farms are found in Nagercoil, Tuticorin, Coimbatore, Pollachi, Dharapuram & Udumalaipettai. They generate about half of India's 2000 megawatts of wind energy.
Nuclear energy: The Kalpakkam Nuclear Power Plant and the Koodankulam Nuclear Power Plant are the major nuclear energy plants for the energy grid.
Thermal energy: The thermal power plants are at Athippattu (North Chennai), Ennore, Mettur, Neyveli & Thoothukudi.
Hydel energy: There are 20 hydroelectric units in Tamil Nadu at Hundah, Mettur, Periyar, Maravakandy, Parson Valley.
Solar energy: Tamil Nadu tops in solar power generation.                                     Wind energy: Tamil Nadu has the highest installed wind energy capacity in India. The state has very high quality of offshore wind energy potential off the Tirunelveli coast & southern Thoothukudi & Rameswaram Coast.