NTPC
NTPC Limited, formerly known as National Thermal Power Corporation Limited, is an Indian government-owned electric utility company. It engaged in the business of generation of electricity and allied activities. It is a company incorporated under the Companies Act 1956 and is under the ownership of Ministry of Power, Government of India. The headquarters of the company is situated at New Delhi. NTPC's core business is the generation and sale of electricity to state-owned power distribution companies and State Electricity Boards in India. The company also undertakes consultancy and turnkey project contracts that involve engineering, project management, construction management, and operation and management of power plants.
The company has also ventured into oil and gas exploration and coal mining activities. It is the largest power company in India with an electric power generating capacity of 62,086 MW Although the company has approx. 16% of the total national capacity contributes to over 25% of total power generation due to its focus on operating its power plants at higher efficiency levels (approx. 80.2% against the national PLF rate of 64.5%). NTPC currently produces 25 billion units of electricity per month.
NTPC currently operates 55 power stations (24 Coal, 7 combined cycle gas/liquid fuel, 2 Hydro, 1 Wind, and 11 solar projects). Further, it has 9 coal and 1 gas station, owned by joint ventures or subsidiaries.
It was founded by Government of India in 1975, which now holds 54.74% of its equity shares on 30 June 2011 (after divestment of its stake in 2004, 2010, 2013, 2014, 2016, & 2017). In May 2010, NTPC was conferred Maharatna status by the Union Government of India, one of the only four companies to be awarded this status. It is ranked 433rd in the Forbes Global 2000 for 2023.
Adani Group*
Adani Power Limited is the power business subsidiary of Indian conglomerate Adani Group with head office at Ahmedabad, Gujarat. It is a private thermal power producer, with capacity of 15,450 MW.
It also operates a mega solar plant of 40 MW at Naliya, Bitta, Kutch, Gujarat. It is India's first company that synchronises the supercritical technology.
Adani Godda Power is implementing a 1,600 MW plant at Jharkhand. The company has signed long term power purchase agreements of about 9,153 MW with government of Gujarat, Maharashtra, Haryana, Rajasthan, Karnataka, and Punjab.
NPCIL
The Nuclear Power Corporation of India Limited (NPCIL) is an Indian public sector undertaking based in Mumbai, Maharashtra. It is wholly owned by the Government of India and is responsible for the generation of nuclear power for electricity. NPCIL is administered by the Department of Atomic Energy (DAE).
NPCIL was created in September 1987 under the Companies Act 1956, "with the objective of undertaking the design, construction, operation and maintenance of the atomic power stations for generation of electricity in pursuance of the schemes and programmes of the Government of India under the provision of the Atomic Energy Act 1962." All nuclear power plants operated by the company are certified for ISO-14001 (Environment Management System).
NPCIL was the sole body responsible for constructing and operating India's commercial nuclear power plants till setting up of BHAVINI Vidyut Nigam) in October 2003. As of 10 August 2012 the company had 21 nuclear reactors in operation at seven locations, a total installed capacity of 6780 MWe. Subsequent to the government's decision to allow private companies to provide nuclear power, the company has experienced problems with private enterprises "poaching" its employees.
Tata Power
Tata Power Limited is an Indian electric utility company based in Mumbai, Maharashtra, India and is part of the Tata Group. The core business of the company is to generate, transmit and distribute electricity. With an installed electricity generation capacity of 10,577 MW, it is India's largest integrated power company. Tata Power has been ranked 3rd in 2017 Responsible Business Rankings developed by IIM Udaipur. In February 2017, Tata Power became the first Indian company to ship over 1 GW solar modules.
The firm started as the Tata Hydroelectric Power Supply Company in 1910, which amalgamated with the Andhra Valley Power Supply Company in 1916. It commissioned India's Second hydro-electric project in 1915 in Khopoli for 72 MW. Then second and third power plants were installed in Bhivpuri (75 MW) in 1919 and Bhira (300 MW) in 1922.
Operations
Tata Power has operations in India, Singapore, Indonesia, South Africa and Bhutan. Tata Power Group has its operations based in 35 locations in India.
The thermal power stations of the company are located at Trombay in Mumbai, Mundra in Gujarat, Jojobera and Maithon in Jharkhand, Kalinganagar in Odisha, Haldia in West Bengal and Belgaum in Karnataka. The hydro stations are located in the Western Ghats of Maharashtra and the wind farms in Ahmednagar, Supa, Khanke, Brahmanwel, Gadag, Samana and Visapur. The company installed India's first 500 MW unit at Trombay, the first 150 MW pumped storage unit at Bhira, and a flue gas desulphurization plant for pollution control at Trombay. It has generation capacities in the States of Jharkhand and Karnataka, and a distribution company in Delhi, servicing over one million consumers spread over 510 square km in the North Delhi. The peak load in this area is about 1,150 MW. Tata Power announced on 24 July 2012, commissioning of the second unit of 525 MW capacity of the Maithon mega thermal project in Dhanbad. The first unit of identical capacity was commissioned in September 2011.