Oil and Natural Gas Corp is weighing a new greenfield refinery and petrochemicals complex, a move that could reshape its business mix by lifting the state-owned producer deeper into higher-margin processing and chemicals rather than relying mainly on crude extraction.
ONGC Plans Refinery and Petrochemicals Complex

The project is still at an early stage, but its scale and structure make it economically important for India’s energy system. ONGC is evaluating whether to build the complex on its own, through a subsidiary or with foreign partners, and will wait for a detailed feasibility study before deciding on capacity, location, technology and funding. That leaves the eventual capital bill open-ended, but the strategic intent is clear: expand domestic refining capacity and capture more value from hydrocarbons at a time when refined fuels and petrochemicals remain central to industrial growth.
The timing also matters for investors watching India’s broader drive to secure supply chains and reduce dependence on imported refined products and chemicals. A new complex would add downstream exposure to ONGC’s portfolio, potentially smoothing earnings over the cycle if it can secure attractive feedstock, utilization rates and offtake. It would also introduce execution risk, since mega-projects tend to pressure balance sheets, delay returns and depend heavily on partner selection, site economics and government approvals.
ONGC is already signaling that downstream expansion is becoming a bigger part of the playbook. Earlier this month it formed ONGC Petrochemicals Marketing Ltd with Mangalore Refinery and Petrochemicals Ltd and ONGC Petro additions Ltd to trade petrochemicals, while it also began a tender process tied to the expansion of a 1.75 million-tonne strategic oil reserve cavern at Mangalore. The company’s credit profile has so far supported that push, with CARE Edge Ratings reaffirming AAA grades on long-term facilities and debt instruments and A1+ on short-term paper.
The stock, however, has not yet bought into the story. ONGC shares slipped 1.2% on Friday to 222 rupees, hovering just above their 52-week low of 218.53 rupees, after a weakening sentiment backdrop and little fresh broker support. For investors, the next catalyst is the feasibility study, which should determine whether the company is taking on a transformative downstream bet or merely testing the market for a future project.
| Entity | Gains | Losses |
|---|---|---|
| ONGC | ▲Downstream diversification | ▼Near-term capital uncertainty |
| Refinery partners | ▲JV participation | ▼Limited control if sidelined |
| India fuel market | ▲More domestic capacity | ▼Higher execution risk |
| ONGC shareholders | ▲Potential margin lift | ▼Project delay or cost overrun |



