Public Sector Undertakings

1. National Thermal Power Corporation (NTPC)
NTPC is the largest power generating company in India. NTPC was incorporated on 7th November, 1975 with the objective of building large size thermal power stations, along with associated transmission systems, to accelerate the integrated development of power sector in the country. Acknowledging contribution of NTPC to the entire power industry, NTPC was conferred the status of Navratna Company in 1997.
NTPC became a listed Company in 2004. In 2005, the company was renamed as 'NTPC Limited' in line with the changes taking place in the business portfolio of the company, transforming the company from a thermal power generator to an integrated power company with presence across entire energy value chain through diversification and backward & forward integration. NTPC has made foray into Hydro power, Coal mining, Power trading, Ash business, Equipment manufacturing, Renewable energy, Power distribution, etc.
On 19th May, 2010, NTPC was granted the coveted status of 'Maharatna Company' by Govt. of India to make it a global giant in line with its vision "To be the world's largest and best power producer, powering India's Growth".
NTPC has authorized share capital of Rs. 10,000 crores and the Paid up capital is Rs. 8,245.5 crores.
NTPC's installed capital upto 31st March, 2012 is 37,014 MW including 4,364 MW under joint ventures/subsidiaries, comprising 31,119 MW from coal based power plants at twenty one locations and 5,895 MW from combined cycle gas/ naphtha based power plants at eight locations. NTPC's share on 31st March, 2012 in the total installed capacity of the country is 18.52% (including JVs/ Subsidiaries) while it contributed 27.57% (including JVs/ Subsidiaries) of the total power generation of the country (without Bhutan import) during 2011-12.
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2. National Hydroelectric Power Corporation (NHPC)
National Hydroelectric Power Corporation Ltd. (NHPC) was incorporated in 1975 under Companies Act, 1956. The mission of NHPC is to harness the vast hydro, tidal and wind potential of the country to produce cheap/ pollution-free and inexhaustible power. NHPC would play a significant role in the integrated and efficient development of hydroelectric, tidal and wind power in the Central sector covering all aspects such as investigation, planning, designs, construction, operation and maintenance of hydroelectric, tidal and wind power projects. NHPC is a schedule A enterprise of the Government of India with an authorized share capital of Rs. 5,000 crores. With an investment base of over Rs. 10,000 crores, NHPC is among the top ten companies in the country in terms of investment.
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3. Rural Electrification Corporation (REC)
Rural Electrification Corporation (REC) was set up in 1969 with the primary objective of providing financial assistance for rural electrification in the country. REC was declared a Public Financial Institution under Section 4-A of the Companies Act in 1992. In February 1998. the Corporation was registered as a Non-Banking Financial Company under Section 45-1A of the RBI Act, 1934. The authorized share capital of the Corporation is Rs. 800 crores. During the year 1998-99 Government of India has contributed Rs. 50 crores towards the share capital of the Corporation increasing its paid up capital to Rs. 680.60 crores as on 30.11.1998.
Rural Electrification Programmes financed by the Corporation cover electrification of villages, including tribal villages and Dalit Bastis, energisation of pump sets, provision of power for small, agro-based and rural industries, lighting of rural households and street lighting. The Corporation has also been providing assistance to the State Electricity Boards for taking up system improvement projects for strengthening and improving sub-transmission and distribution system and small generation projects like wind energy and hydel projects. In addition, under Kutir Jyoti programme in 1988-89 by the Govt. of India, one time initial cost of internal wiring and service connection charges up to a maximum limit of Rs. 1000.00 per connection with installation of meter or Rs. 800 per connection without meter is provided to rural households below poverty line as grant through the State Govts./ SEBs.
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4. North Eastern Electric Power Corporation (NEEPCO)
North Eastern Electric Power Corporation Ltd. (NEEPCO) was constituted in 1976 under the Company's Act 1956 with the objective of developing the large power potential of the North Eastern Region of the country through planned development of the North Eastern Region. Since then NEEPCO has grown into one of the pioneer public sectors with an authorized share capital of Rs. 2500.00 crores. It is schedule B organisation.
The North Eastern Region of the country is blessed with highest hydro-power potential of the country which is estimated at 48000 MW constituting about 33% of the total reserves of the country. The region has abundant natural gas sources. There is ample scope of development in this under developed region where the main infrastructure has been identified as power.
The main objectives of the North Eastern Electric Power Corporation are to add to the power generating capacity in the North Eastern Region by installing hydro and thermal power plants to ensure optimum utilisation of commissioned generation projects, to adequate internal sources by ensuring justifiable return on investment and to continue sustained efforts to obtain the receivable from State Electricity Boards/ Departments, to undertake long term feasibility studies for optimum development of hydro power resources of river basins in North Eastern region. At present, NEEPCO is contributing 625 MW out of a total installed capacity of 1649 MW in North-Eastern Region.
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5. Power Finance Corporation (PFC)
The Power Finance Corporation Ltd. (PFC) was incorporated on 16th July, 1986 under the Companies Act, 1956. The mission of PFC is to function as the prime development financial institution dedicated to the growth and overall development of the power sector. The borrower-portfolio of PFC comprises the State Electricity Boards, State Generation Corporations, Municipal run power utilities besides the central and private sector power utilities. The funds provided by the Corporation are in the nature of the additional to Plan Allocation (in respect of SEBs etc.) and based on the merits of the individual projects. As on 30th June, 1999, the Authorized Capital and the paid-up (equity) capital of the Corporation stood at Rs. 2000 crores and Rs. 1030 crores respectively. The Power Finance Corporation is a schedule 'A' organization.
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6. Power Grid Corporation of India (POWER GRID)
POWER GRID was established in October 23, 1989 with the mandate to "establish and operate Regional and National Power Grids to facilitate transfer of power within and across the Regions with reliability, security and economy on sound commercial principles" as its mission. POWER Grid's persistent efforts to accord the deserved priority to the transmission sector, which has so far eluded this vital sector of India has been recognized and POWER GRID has been statutorily acknowledged as Central National Transmission Utility of the country.
During the last 7 years, the company has added around 13,000 ckt. Kms. EHV transmission lines to the national network. Asset base of the company grew from Rs. 3521 crores in 1992-93 to Rs. 8096 crores in 1997-98 and turnover from a modest Rs. 634 crores in 1992-93 to rs. 1434.68 crores in 1997-98. Power Grid operates over 31,000 ckt kms of transmission lines comprising 400 KV, 220 KV, 132 KV AC transmission lines and HVDC transmission system with a total installed transformation capacity of around 28,000 MVA distributed over 55 substations and maintained at a persistent level of over 98% of the availability.
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7. SJVN – A Mini Ratna Company
SJVN Limited, a Mini Ratna& Schedule 'A' CPSU under Ministry of Power, Govt. of India, is a joint venture between the Government of India &Governmentof Himachal Pradesh. SJVN was incorporated onMay 24, 1988 to plan, promote, develop all forms of power and all ancillary activities related thereto, in India and abroad.
SJVN was conferred with the prestigious ‘Mini Ratna’ status in May 2008 and is a listed company since 2010. Present equity share holding of GoI, GoHP and Public is 59.92%, 26.85% and 13.23% respectively. SJVN has authorized capital of Rs 7000 crore and paid up capital of Rs 3930 crore.
Beginning with construction of India’s largest 1500 MW NathpaJhakri HPS, today the company has commissioned seven generation power projects totalling 2092 MW installed capacity. SJVN is presently implementing power projects in Himachal Pradesh, Uttarakhand, Bihar, Maharashtra, Gujarat, Rajasthan, Uttar Pradesh, Madhya Pradesh, Punjab, Assam, Mizoram, Odisha and Arunachal Pradesh in India besides neighbouring country- Nepal.
SJVN’s present portfolio (December, 2022), comprises ofsixty seven power projects having 44378 MW total capacity and three transmission lines of 340 km length under various stages of development. SJVN has diversified in to generating all forms of power – hydro, wind, solar, thermal and is also in to transmission line and power trading businesses.
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8. THDC India Limited
THDC India Limited is a joint venture of the Govt. of India and Govt. of Uttar Pradesh with equity share ratio of 75:25 for the Power Component. The Company was incorporated in July' 88 to develop, operate & maintain the 2400 MW Tehri Hydro Power Complex and other hydro projects. The Company has an authorised share capital of ' 4000 cr. and paid up capital of Rs. is Rs. 3473.10 Crores. THDCIL is a Mini Ratna Category-I and Schedule 'A' CPSE. The Memorandum and Articles of Association of the Company has been modified to reflect the current business reality of projects outside Bhagirathi valley. The object clause has been amended to incorporate development of Conventional/ Non-conventional/ Renewable sources of Energy and River Vally Projects. The Corporation has grown into a multi-Project  Organisation, with Projects spread over various States as well as neighbouring Country, Bhutan. Total installed capacity of THDCIL presently is 1,400 MW. THDCIL has two generating stations namely Tehri Stage-I (4x250 MW) and Koteshwar HEP (4x100 MW).
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9. Power System Operation Corporation Limited (POSOCO)
Power System Operation Corporation Limited (POSOCO) is a wholly owned Government Company  under Ministry of Power. POSOCO is operating National Load Despatch Centre (NLDC), located at New Delhi, and five Regional Load Despatch Centers (RLDCs) located at Kolkata, Shillong, New Delhi, Mumbai and Bangaluru. As per the mandate of the Electricity Act 2003, RLDCs and NLDC are the apex bodies for real time integrated operation of National Grid.
POSOCO facilitates transfer of electric power within and across the regions and trans-national exchange of power and also performs various other functions assigned by the Govt. of India, from time to time. Further, POSOCO observes compliance of the Rules, Guidelines and Standards to be followed by various power sector agencies. 
In addition to ensuring reliability & security, with economy through effective System Operation and Market Operation activities, POSOCO has been entrusted with the responsibilities of implementation of Renewable Energy Certificate (REC) Mechanism, Registry of Energy Saving Certificates (ESCerts), Implementing Agency for the  Point of Connection (PoC) based  transmission charges, power supply regulation, etc.
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