India’s Public Sector Undertakings represent one of the most diverse and consequential portfolios of government enterprises anywhere in the world. From petroleum refining to satellite launches, from commercial banking to heavy defence manufacturing, the range of activities undertaken by Indian PSUs reflects the ambition of a development model that placed the state at the centre of industrial and economic planning.
Even as the Indian economy has liberalised significantly over the past three decades, the public sector has remained central — not as a relic of an earlier era, but as an evolving set of enterprises adapting to new mandates, new competitive environments, and new strategic priorities. Understanding the major PSUs, their current status, and the directions they are moving in is essential knowledge for anyone engaged with the Indian economy in 2026.
Energy Sector PSUs: The Anchors of Industrial India
The energy sector is home to some of India’s largest and most consequential Public Sector Undertakings. ONGC, the country’s largest oil and gas explorer and producer, operates across multiple international geographies in addition to its domestic exploration activities and holds strategic reserves of proven reserves that are essential for energy security.
Indian Oil Corporation is the country’s largest company by revenue, operating the most extensive refining and marketing network in India and playing a direct role in fuel price management. Coal India, the world’s largest coal mining company, produces the fuel that still powers a substantial majority of India’s electricity generation. NTPC, with the largest installed power generation capacity of any utility in the country, is simultaneously managing legacy coal assets and building the renewable capacity that will define its future.
Together, these energy PSUs shape everything from petrol pump prices to electricity tariffs to corporate energy costs — making them relevant to virtually every Indian household and business, not just those directly connected to the energy sector.
Heavy Industry and Manufacturing PSUs
BHEL — Bharat Heavy Electricals Limited — is the company that has built a large fraction of India’s installed power generation capacity over its history. SAIL — Steel Authority of India Limited — produces the steel that goes into India’s infrastructure. HAL — Hindustan Aeronautics Limited — manufactures the aircraft that protect India’s airspace. BEML produces defence vehicles, metro rail coaches, and mining equipment.
These heavy industry Public Sector Undertakings represent capabilities that are both commercially important and strategically significant. They are the manufacturing foundation beneath India’s infrastructure ambition and its defence self-reliance programme, and their performance and direction are consequently watched closely by policymakers, investors, and industry participants alike.
Banking and Financial Sector PSUs
State Bank of India is not just a bank — it is a financial institution of such scale and reach that its decisions affect credit availability and banking access across every district of the country. With the largest branch network, the largest agricultural lending book, and the largest exposure to infrastructure financing of any Indian bank, SBI’s health is inseparable from the health of India’s financial system.
The other nationalised banks — PNB, Canara Bank, Union Bank, Bank of Baroda, Bank of India, and several others — collectively extend formal financial services to tens of millions of customers who might otherwise be excluded from the banking system. Their strategic importance goes well beyond their financial results, though those results are also increasingly strong after the NPA resolution work of recent years.
Infrastructure PSUs: Building the Physical Framework
NHAI, the National Highways Authority of India, has overseen one of the most ambitious road construction programmes in the world over the past decade. Indian Railways, as a single enterprise, is the world’s largest employer and one of its most complex logistics networks. Major port trusts and airport authorities are transforming India’s trade infrastructure. These public enterprises are physically building the foundation on which India’s economic ambition rests.