Indian Oil Corp, the country's top refiner, will invest $1.94 billion to expand the capacity of its Barauni refinery in eastern Bihar state by 50 per cent to 180,000 barrels per day by April 2023, the company said on Friday.
The state-run company is raising its refining capacity to meet growing demand for petroleum products in the country.
India has emerged as a bright spot for refined fuel demand.
Refined fuel consumption - a proxy for oil demand - in the December quarter rose 2.6 per cent from a year earlier.
India's oil demand growth is set to overtake China by mid-2020s, priming the country for more refinery investment but making it more vulnerable to supply disruption in the Middle East, the International Energy Agency (IEA) said earlier this month.
Indian Oil Corp reported a threefold rise in third-quarter profit on Thursday, mainly due to inventory gains.