Public Sector Undertakings (PSUs) in India Explained

Public Sector Undertakings, commonly shortened to PSUs, are companies and corporations owned and run by the government rather than by private shareholders. When you fill petrol at an Indian Oil pump, switch on a light powered by NTPC electricity, open a savings account at the State Bank of India or take a LIC policy, you are dealing with one. For several decades after Independence, these enterprises were the main engine of Indian industrialisation, and they remain central to energy, banking, defence and infrastructure even today.

This guide explains what PSUs and Central Public Sector Enterprises (CPSEs) are, why Nehru’s India built them, how they are classified into Maharatna, Navratna and Miniratna companies, and how policy changed after the 1991 reforms through disinvestment and privatisation. It also looks at the long-running debate between efficiency and strategic purpose, which explains why the government today stays only in a limited set of sectors.

Quick Facts

What Are Public Sector Undertakings?

A public sector undertaking is a business enterprise in which the government is the dominant owner. Where the Union Government owns the majority stake, the entity is called a Central Public Sector Enterprise (CPSE). Where a state government owns it, it is a State Public Sector Undertaking. Under the Companies Act, a “government company” is one in which at least 51 per cent of the paid-up share capital is held by the Centre, one or more states, or a combination of both.

Indian public enterprises have historically taken three legal forms:

• Departmental undertakings: run directly as part of a government ministry, with staff who are government employees. Indian Railways and the postal service are classic examples.
• Statutory corporations: created by a special Act of Parliament or a state legislature, with their own legal personality. The Reserve Bank of India and the Food Corporation of India are examples.
• Government companies: registered under the Companies Act like any other company, but with the government as majority shareholder. Most of today’s well-known PSUs belong to this group.

Because the government is the owner, PSUs are accountable in ways private firms are not. They are audited by the Comptroller and Auditor General of India, answer to Parliament and state legislatures through ministries, and are subject to oversight laws such as the Right to Information Act. At the same time, a company with minority private shareholders can be listed on stock exchanges, which brings market discipline.

The Nehruvian Vision: Commanding Heights of the Economy

At Independence in 1947, India had a small industrial base, limited private capital, weak infrastructure and very few heavy-industry capabilities such as steel, machine-building or large-scale power generation. Private entrepreneurs were reluctant to take on projects with long gestation periods and uncertain returns. Even the 1944 Bombay Plan, drawn up by leading industrialists, accepted that the state would need to play a major role in building basic industries.

Jawaharlal Nehru, along with planners such as P. C. Mahalanobis, argued that the state should occupy the “commanding heights” of the economy: the core sectors on which all other industries depend. The belief was that heavy industry, energy and transport would create a base from which private enterprise and agriculture could grow. Nehru famously described dams, steel plants and factories as the “temples of modern India”, reflecting the near-sacred significance he attached to nation-building through technology.

The Industrial Policy Resolutions

The Industrial Policy Resolution of 1948 laid down the idea of a mixed economy. It reserved arms and ammunition, atomic energy and railways as state monopolies, and left other areas open to both sectors. The Industrial Policy Resolution of 1956, often called the economic constitution of India, went much further and divided industries into three schedules:

The Second Five Year Plan (1956 to 1961) then channelled large investments into steel plants at Bhilai, Rourkela and Durgapur, coal mines, power projects and heavy engineering.

Types of PSUs in India

PSUs can be sorted in several ways. The first and most basic division is by the level of government that owns them.

Central and State PSUs

Central PSEs are owned by the Union Government and are overseen by the administrative ministry related to their business, for example the Ministry of Petroleum for oil companies or the Ministry of Coal for Coal India. The Department of Public Enterprises acts as the nodal department for policy matters, and publishes an annual Public Enterprises Survey that tracks their performance. State PSUs are owned by state governments and are found mainly in state road transport, power generation and distribution, industrial development, warehousing, agro-industries and financial corporations. Examples include state road transport corporations and state electricity distribution companies.

Classification by Function

• Manufacturing and engineering: steel, heavy electricals, aircraft and machine-building units.
• Mining, oil and energy: coal, crude oil, natural gas, refining, power generation and transmission.
• Services and infrastructure: airports, ports, shipping, railways-linked enterprises and telecom.
• Financial institutions: public sector banks, insurers and development finance bodies.
• Trading, consultancy and promotional: bodies that handle trade, engineering consultancy, handicrafts or marketing support.

Another distinction is between profit-making enterprises, those that run at a loss and those that are kept alive for social or strategic reasons.

Maharatna, Navratna and Miniratna: The Classification Explained

By the 1990s there was a feeling that high-performing PSUs were being held back by heavy government control over small decisions. In 1997 the government introduced the Navratna and Miniratna schemes to give better performers more operational and financial autonomy. The Maharatna category was added around 2009 to 2010 for the very largest enterprises.

Each tier grants a higher degree of freedom in matters such as capital investment, forming joint ventures, creating subsidiaries and making overseas acquisitions without prior ministerial approval. The exact limits and eligibility thresholds are revised periodically by the government, so the table below describes the general pattern rather than fixed figures.

Companies move between categories as their performance changes, and the list of members grows over time. Large names that have held Maharatna status include ONGC, Indian Oil, NTPC, SAIL, Coal India, BHEL, GAIL and Power Grid, while Navratna and Miniratna lists include a wide range of enterprises such as Bharat Electronics, NMDC and IRCTC.

Famous PSUs and What They Do

A handful of public enterprises are household names. The table below lists some of the best-known ones and their general fields, along with a note on origins.

The Indian Railways network itself is a departmental undertaking, but several enterprises linked to it, such as IRCTC, RVNL and IRCON, are separate PSUs. Likewise, ISRO is a government department, while its commercial arms Antrix and, since 2019, New Space India Limited operate as public sector companies.

The Role PSUs Played in Nation Building

Public enterprises were more than a business model. They were instruments of development policy, and their contribution can be seen in several areas.

• Industrial base: they set up steel, heavy engineering, fertilisers, shipbuilding, power equipment and petroleum refining at a time when the private sector could not or would not.
• Energy security: exploration, refining, coal mining and power generation were developed largely through public enterprises.
• Strategic capability: defence production, atomic energy, aerospace and space technology were built through government-owned bodies and PSUs.
• Employment and inclusion: PSUs offered stable jobs, training and welfare benefits, and applied reservation policies for Scheduled Castes, Scheduled Tribes and Other Backward Classes.
• Regional balance: steel towns and industrial townships such as Bhilai, Rourkela and Bokaro were deliberately located in backward regions of the country.
• Revenue: profitable PSUs pay taxes, dividends and royalties to the government, which help finance public spending.

Many PSUs also trained generations of engineers, technicians and managers. Skills created in public enterprises later flowed into the private sector as well, which is one of the less visible contributions of the public sector era.

Public Sector Banks and Insurance

Finance deserves separate mention because the state took control of the sector in a deliberate series of steps. The Reserve Bank of India was nationalised in 1949. In 1955 the Imperial Bank of India was taken over and became the State Bank of India. Life insurance was nationalised in 1956 with the creation of LIC, and general insurance companies were brought under government ownership in the early 1970s.

The most dramatic step was bank nationalisation. On 19 July 1969, fourteen major commercial banks were nationalised, and six more followed in 1980. The aim was to channel credit towards agriculture, small industry and priority sectors, spread branches into rural areas and reduce the control of large industrial houses over banks. This process significantly expanded banking access and brought savings into the formal system.

Public sector banks have since gone through recapitalisation and consolidation. In 2017 the associate banks of SBI were merged into it, and in 2019 and 2020 several smaller PSBs were merged with larger ones, which sharply reduced their number. Private and foreign banks now compete strongly, but PSBs continue to be major lenders and the main channel for government financial inclusion schemes.

Liberalisation in 1991 and the Start of Disinvestment

By the late 1980s many public enterprises faced problems of low productivity, political interference, overstaffing and heavy dependence on budgetary support. A balance of payments crisis in 1991 triggered wide-ranging reforms in industrial, trade and financial policy, often summed up as liberalisation, privatisation and globalisation.

The new industrial policy of 1991 sharply reduced the number of industries reserved for the public sector and removed most industrial licensing. Over time, the reserved list shrank to only a couple of areas, such as atomic energy and railway operations, and sectors like telecom, aviation, power, insurance and banking were opened to private and foreign players. PSUs now had to compete.

What Is Disinvestment?

Disinvestment means the government selling part of its equity in a PSU to investors. The first sales began in 1991 to 1992 and were modest. Minority stake sales through share offerings, offer for sale and follow-on offers became a regular tool. A dedicated ministry for disinvestment was set up around 2000, and the function now sits with the Department of Investment and Public Asset Management (DIPAM). Over the years, disinvestment has taken three main forms:

• Minority sales: the government sells a small share but retains control and majority ownership.
• Strategic sales: management control is handed over to a private buyer, as with BALCO and VSNL in the early 2000s.
• Listing and public offerings: unlisted PSUs are brought to the stock market, as with the LIC IPO in 2022.

Strategic Sales, Air India and the National Monetisation Pipeline

Beyond selling minority stakes, the government has attempted full privatisation of select enterprises. The best-known example is Air India. The airline began as Tata Airlines in 1932 and was nationalised in 1953. After years of mounting losses and debt, the government invited bids, and in 2021 the Tata Group won the sale. Ownership was formally handed over in January 2022, so the airline returned to its founders after nearly seven decades.

Another large case is Bharat Petroleum Corporation (BPCL), a major oil refiner and marketer. The government launched a strategic sale process but did not finalise a transfer, which illustrates how complicated such transactions can be given their financial size, labour concerns and market conditions. In a different type of transaction, Hindustan Petroleum was acquired by ONGC in 2018, which moved ownership within the public sector instead of out of it.

National Monetisation Pipeline

Announced in 2021, the National Monetisation Pipeline (NMP) takes a different route. Instead of selling companies, the government leases or licenses operating public infrastructure assets, such as roads, railway assets, pipelines, power transmission lines and warehouses, to private operators for a fixed period. The money raised is meant to be recycled into building new infrastructure. Ownership of the assets stays with the state and returns to it at the end of the contract. Critics and supporters differ on its pricing and impact, but it reflects a shift from owning every asset to making assets work harder.

The Great Debate and the Policy Today

Few topics in Indian economic discussion are as long-running as the merits of public enterprises. Supporters point out that PSUs built the infrastructure and industrial base on which later growth depended, serve social goals, stay in sectors that private firms avoid and give the state a stabilising presence during crises. Critics argue that many are overstaffed, slow in decision-making, exposed to political pressure and weaker in innovation. A number of “sick” enterprises have needed repeated support or closure. Industrial sickness was addressed by the Board for Industrial and Financial Reconstruction from the late 1980s, and later by the bankruptcy law framework.

The reality is mixed. Some PSUs, including many Maharatna and Navratna companies, are consistently profitable and compete internationally, while others make losses year after year. Autonomy reforms, performance agreements known as Memorandums of Understanding and the rating tiers described earlier were all designed to improve results.

Current Policy on Strategic Sectors

In 2021, the government announced a new public sector enterprise policy. It identified four broad strategic areas where public enterprises will keep a presence: atomic energy, space and defence; transport and telecommunications; power, petroleum, coal and other minerals; and banking, insurance and financial services. Even in these areas, the stated aim is a minimal presence, with only as many enterprises as are strategically necessary. In all non-strategic sectors, existing enterprises are to be considered for privatisation, merger or closure.

Conclusion

Public Sector Undertakings tell the story of independent India’s economic thinking. They began as the tools of a state that wanted to build steel mills, dams, refineries and banks for a poor and newly free country. After 1991, their role was rethought, with competition, disinvestment and privatisation reducing the state’s footprint. Today’s approach combines a limited set of strategic public enterprises with a larger private role elsewhere. Understanding PSUs, from Maharatna giants to state transport corporations, helps make sense of how India’s economy was built and where it may head next. This explainer was last reviewed on 1 October 2026.

Frequently Asked Questions

What is the difference between a PSU and a CPSE?

PSU is the general term for any enterprise owned mainly by a government in India, whether it is the Centre or a state. CPSE, or Central Public Sector Enterprise, refers specifically to those owned by the Union Government. State-owned companies are generally known as State PSUs.

What do Maharatna, Navratna and Miniratna mean?

These are categories given to better-performing CPSEs to grant them greater financial and operational autonomy. Maharatna is the top tier with the highest investment powers, followed by Navratna and then Miniratna (Category I and II). The eligibility conditions and limits are revised from time to time.

Why did India create so many public sector companies after Independence?

Private capital was limited and reluctant to invest in heavy industry, power and infrastructure. Planners led by Nehru wanted the state to control the “commanding heights” of the economy and to build a strong industrial base, as set out in the Industrial Policy Resolutions of 1948 and 1956.

What is disinvestment and how is it different from privatisation?

Disinvestment is the sale of part of the government’s shareholding in a PSU. If the government keeps a majority stake, the company remains a PSU. Privatisation, or strategic sale, transfers management control to a private owner, as in the sale of Air India to the Tata Group.

Are public sector banks also PSUs?

Yes. Public sector banks are majority-owned by the Union Government and are generally treated as public sector enterprises, although they are regulated by the Reserve Bank of India and operate under banking laws. State Bank of India is the largest of them.

Will all PSUs be privatised?

No. The current policy retains a small number of public enterprises in strategic sectors, such as atomic energy, defence, space, banking and certain energy and transport areas. Enterprises in other sectors may be considered for privatisation, merger or closure, depending on circumstances.

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