The story
Jamnagar's coast offered deep water for crude tankers and space for a very large plant, and Reliance built its first refinery here. A second refinery was added next to it, making one of the world's largest refining complexes. Around it have grown contractors, transporters, engineering service firms and townships.
In numbers
Reliance describes its Jamnagar refinery as the largest and most complex single-site refinery in the world, with 1.4 million barrels per day crude processing capacity and a complexity index of 21.1.
Refining & Marketing (Reliance Industries Ltd) · 2026
Ways in for a newcomer
- Maintenance and engineering contracts for the refinery
- Industrial cleaning, scaffolding and safety services
- Transport and logistics for petroleum products
- Housing, catering and services for workers
Problems the cluster faces
- Large-company vendor approval and safety rules are strict
- Long payment cycles for small contractors
- Shift to cleaner fuels over time
Businesses to start here
Oil Tanker Truck Hire Business →Facility Management Services →Engineering Workshop (Job Work and Repairs) →4T Engine Oil Blending Plant →