NHAI to install Retrofit Emission Control Devices on 25 DG sets at Dwarka Expressway
9 October 2026
The National Highways Authority of India is to install Retrofit Emission Control Devices on 25 Diesel Generator sets at Package-IV of the Dwarka Expressway.
Package-IV is 8.7 km long and connects Basai to the Kherki Dhaula and Delhi-Gurugram Expressway cloverleaf intersection.
The step follows directions of the Commission for Air Quality Management on diesel generator sets in the Delhi National Capital Region.
The measure is aimed at reducing air pollution, particularly in winter, when the Graded Response Action Plan is in force.
The work covers installation, testing and commissioning along with comprehensive maintenance support.
NHAI has required GPS-tagged photographs of RECD installations at each DG-set location for verification and compliance.
In plain words
RECD Retrofit Emission Control Device — A device fitted to an existing diesel generator set to cut the pollutants in its exhaust.
GRAP Graded Response Action Plan — A set of anti-pollution measures for the Delhi National Capital Region that tighten as air quality worsens.