The revamp improves crude-processing flexibility and operational efficiency while enhancing the refinery’s ability to maximise higher-value fuel production.
Nayara Energy has commissioned the Vacuum Gasoil Mild Hydrocracker (VGO-MHC) Revamp Project at its Vadinar refinery in Gujarat, enabling 100 per cent of its diesel production to meet Bharat Stage VI (BS-VI) fuel standards continuously.
The upgrade strengthens the refinery’s ability to produce cleaner transportation fuels while supporting India’s growing energy demand. It also extends the operating cycle of the unit by more than 150 per cent, allowing longer periods between planned shutdowns and improving continuity of fuel production and supply.
Commenting on the development, Sergey Denisov said, “Despite a challenging global environment, the project was successfully commissioned through a more self-reliant execution approach. This included the installation of a 1,435-tonne reactor in a live refinery environment, underscoring Nayara Energy’s ability to safely execute complex refinery upgrades at scale.”
The revamp also improves crude-processing flexibility and operational efficiency, increasing the Vadinar refinery’s Nelson Complexity Index to 12.6. A higher Nelson Complexity Index indicates a refinery’s ability to process a wider range of crude oils and convert a larger share of lower-value feedstocks into higher-value petroleum products, improving margins and operational competitiveness.
Located in Gujarat’s Devbhumi Dwarka district, the Vadinar refinery is the country’s second-largest single-site refinery, with a processing capacity of 20 million metric tonnes per annum (MMTPA).
The facility is owned and operated by Nayara Energy Ltd, which is backed by a consortium of international investors. The company is primarily owned by Russia’s Rosneft and an investment consortium that includes Trafigura and UCP Investment Group.

