Nayara extends Vadinar refinery VGO-MHC cycle by over 150%

By Elena Vasquez

Nayara Energy’s Vadinar refinery in Gujarat can now produce 100% BS-VI-compliant diesel continuously, after a revamp extended the VGO-MHC unit’s operating cycle by more than 150%.

The project centers on longer runs between planned shutdowns and steadier fuel output. Nayara said in a press release on Thursday that it had commissioned the VGO-MHC Revamp Project, which is designed to improve operational reliability, support cleaner-fuel production and give the plant more flexibility in crude selection.

What changed at Vadinar?

The revamp lengthens the unit’s operating cycle by more than 150%, allowing longer intervals between planned shutdowns and, in the company’s assessment, greater continuity of fuel production and supply. Nayara also expects gains in operating efficiency and crude-processing flexibility. The project is expected to take the refinery’s Nelson Complexity Index to 12.6.

The change concerns an operating unit at an established refinery rather than a new production complex. Nayara operates Vadinar, which has 20 million tonnes per annum of capacity, alongside a retail network of more than 7,000 outlets and a 450,000 tonne-per-annum polypropylene plant.

In practical terms, the upgrade targets continuity and crude flexibility at an existing refinery.

How was the work done?

The work included installing a 1,435-ton reactor in a live refinery environment. Nayara described the project as a more self-reliant execution effort.

Sergey Denisov, chief development officer at Nayara Energy, said: “Despite a challenging global environment, the project was successfully commissioned through a more self-reliant execution approach.”

He added: “This included the installation of a 1,435-ton reactor in a live refinery environment, underscoring Nayara Energy’s ability to safely execute complex refinery upgrades at scale.”

Nayara has moved from construction to operations, with the longer cycle now in service.

What does the revamp mean for fuel supply?

Nayara describes the investment as support for India’s energy requirements, energy self-sufficiency, uninterrupted fuel supplies and long-term growth. Those are the company’s stated aims, not a quantified forecast of additional fuel output.

For fuel planners, the immediate operating change is a unit that can run longer without a planned shutdown, while all diesel output at Vadinar meets BS-VI standards. The upgrade comes with no announced capacity expansion; the measurable changes are the cycle extension and a refinery complexity index of 12.6.

The measurable gains are longer operating runs and BS-VI output across the refinery’s diesel production.

What should the market watch?

The next planned shutdown is the near-term checkpoint, and Nayara has not announced its date. The operating questions are how long the unit runs between outages and whether continuous BS-VI production persists as the crude slate changes.

The announcement does not provide a project cost, shutdown date or margin estimate. Those figures will determine how much the project changes Vadinar’s economics.

The operating story is a longer cycle at Vadinar; the next shutdown will show whether it holds.