Maharatna ONGC is the largest crude oil and natural gas Company in India, contributing around 71 per cent to Indian domestic production. Crude oil is the raw material used by downstream companies like IOC, BPCL, HPCL and MRPL (Last two are subsidiaries of ONGC) to produce petroleum products like Petrol, Diesel, Kerosene, Naphtha, and Cooking Gas LPG.

ONGC has a unique distinction of being a company with in-house service capabilities in all areas of Exploration and Production of oil & gas and related oil-field services. Winner of the Best Employer award, this public sector enterprise has a dedicated team of around 26,000 professionals who toil round the clock in challenging locations.

NTPC is India's largest integrated power company, dedicated to lighting every corner of the country and building a sustainable future for all. As a leader in the power sector, we are committed to generating efficient and affordable power, aiming to achieve 130 GW by 2032. We embrace a diverse fuel mix, integrating fossil fuels, gas, hydro, nuclear, and renewable sources to minimize our carbon footprint.

Established in 1975, NTPC has played a vital role in India's economic growth for nearly five decades. With a commitment to operational excellence and adherence to global standards, we are lighting every fourth bulb in the country!.

Coal India Limited (CIL) the state-owned coal mining corporate came into being in November 1975. With a modest production of 79 Million Tonnes (MTs) at the year of its inception Coal India, today is the single largest coal producer in the world and one of the largest corporate employer with manpower of 2,12,066 (as on 1st April, 2026). Spread across eight Indian states, CIL operates in 85 mining areas, managing a total of 310 working mines, consisting of 129 underground, 168 opencast, and 13 mixed mines along with other establishments like workshops, hospitals, and so on.

Incorporated on July 16th, 1986, Power Finance Corporation Ltd. is a Schedule-A Maharatna CPSE, and is a leading Non-Banking Financial Corporation in the Country. PFC's registered office is located at New Delhi and regional offices are located at Mumbai and Chennai.

PFC plays a crucial role in the rise of India as a global player. Increasingly, a country's development is gauged by measuring its energy usage. With a large fraction of our nation still, unfortunately, without any access to electricity, PFC will become an increasingly important factor in the years to come.

REC is a 'Maharatna' company under the administrative control of the Ministry of Power, Government of India, and is registered with RBI as Non-Banking Finance Company (NBFC), Public Financial Institution (PFI) and Infrastructure Financing Company (IFC).

REC was incorporated in 1969 in the backdrop of severe drought and famine in the country, to energise agricultural pump-sets for irrigation purposes, thereby reducing the dependency of agriculture on monsoons. From its humble beginnings, REC has evolved and expanded its financing mandate to cover the entire Power-Infrastructure sector comprising Generation, Transmission, Distribution, Renewable Energy and new technologies like Electric Vehicles, Battery Storage, Green Hydrogen etc.

Axens is a worldwide group that provides a complete range of solutions for the conversion of oil and biomass to cleaner fuels, for the production and purification of major petrochemical intermediates as well as for gas treatment and conversion options. The offer includes technologies, equipment, furnaces, modular units, catalysts, adsorbents and related services. Axens is ideally positioned to cover the entire value chain, from feasibility study to unit start-up and follow-up throughout the entire unit cycle life. This unique position ensures the highest level of performance with a reduced environmental footprint. Axens global offer is based on: highly trained human resources, modern production facilities and an extended global network for industrial, technical supports & commercial services.