Key Terms & Concepts — UPSC Mains
Greenfield Airport
"An airport built from scratch on undeveloped land, as opposed to expanding an existing facility"
A greenfield airport is an aviation infrastructure project constructed on a new, previously undeveloped site — as distinguished from a brownfield airport, which involves expansion, modernisation, or redevelopment of an existing airport facility. Greenfield airports require fresh land acquisition, environmental clearances, and complete construction of runways, terminals, ATC towers, and connectivity infrastructure. In India, greenfield airports are typically developed under Public-Private Partnership (PPP) models with concession agreements governed by NITI Aayog PPP guidelines. India permits 100% FDI under the automatic route for both greenfield and brownfield airport projects.
Critical for UPSC GS-3 (Infrastructure) and Prelims. UPSC tests the distinction between greenfield and brownfield projects across sectors — airports, ports, industrial corridors, and power plants. The Noida International Airport (Jewar) is the latest example of a greenfield airport developed under the DBFOT-PPP model.
- 1 Greenfield means entirely new construction on undeveloped land
- 2 Brownfield means expansion or modernisation of existing infrastructure
- 3 India allows 100% FDI under automatic route for both greenfield and brownfield airports
- 4 21 greenfield airports have received in-principle approval in India; 12 are operational as of 2026
- 5 NABH Nirman targets 350 airports by 2047 (from 74 in 2014 to 159 in 2024)
The Noida International Airport (DXN) at Jewar, inaugurated on March 28, 2026, is India's largest greenfield airport — developed by Zurich Airport International AG under a 40-year PPP concession with Phase 1 capacity of 12 MPPA.
