The National Highways Authority of India (NHAI) has announced plans to install Retrofit Emission Control Devices (RECDs) on 25 diesel generator sets operating at Package-IV of the Dwarka Expressway in the Delhi-NCR region. The initiative aims to reduce air pollution from these generators, which power lighting and other operations on the expressway corridor.
This measure aligns with directions from the Commission for Air Quality Management (CAQM), which regulates diesel generator emissions in the National Capital Region. The Delhi-NCR region faces severe air pollution during winter months, making emission control of non-road mobile sources like generators critical under the Graded Response Action Plan (GRAP).
Key facts
- 25 diesel generator sets will receive retrofit emission control devices
- Location: Dwarka Expressway Package-IV, 8.7 km long corridor connecting Basai to Kherki Dhaula/Delhi-Gurugram Expressway cloverleaf intersection
- Initiative ordered by the Commission for Air Quality Management (CAQM)
- Work includes installation, testing, commissioning and maintenance support
- NHAI will maintain GPS-tagged photographs of installations for verification and compliance
What are Retrofit Emission Control Devices?
RECDs are pollution control systems fitted onto existing diesel generators to reduce harmful emissions without replacing the entire equipment. These devices capture and treat exhaust gases before they are released into the atmosphere, lowering levels of particulate matter, nitrogen oxides and other pollutants that contribute to air quality degradation.
Why this is needed in Delhi-NCR
The Delhi-NCR region experiences hazardous air quality during winter months due to multiple factors including vehicle emissions, industrial activity and biomass burning. During winter, air stagnation traps pollutants close to the ground, and diesel generators used for various construction and operational activities add to this burden. The CAQM, a multi-agency body constituted to tackle air pollution in the NCR, has mandated that all diesel generators in the region comply with emission standards through appropriate control measures.
The Graded Response Action Plan (GRAP) is a set of emergency measures triggered when air quality deteriorates beyond certain thresholds during winter. Restricting and regulating diesel generator use is one such measure. By equipping generators with emission control devices, NHAI ensures continuity of essential expressway operations while meeting air quality standards.
How the devices will be implemented
NHAI will oversee the installation, testing and commissioning of RECDs on all 25 diesel generators currently deployed at Dwarka Expressway Package-IV. The authority will also provide ongoing maintenance support to ensure the devices function properly. To ensure accountability and verify compliance, NHAI will maintain GPS-tagged photographs of each installation location.
This approach allows expressway lighting and other critical operations to continue without interruption while simultaneously controlling emissions from the diesel generators powering these systems.
Broader environmental strategy
This initiative reflects NHAI’s commitment to integrating environmental protection into the planning, construction and operation of national highway projects, particularly those in the Delhi-NCR region. The move demonstrates how infrastructure development can be aligned with air quality compliance and pollution reduction targets.
What this means for citizens
For residents of Delhi and adjoining NCR areas, this step may contribute to modestly improved air quality during the critical winter season when pollution levels spike. Every reduction in emissions from diesel sources helps lower particulate matter and other harmful pollutants in the air people breathe.
For commuters on Dwarka Expressway, the installation will not disrupt expressway operations. Lighting and other expressway functions will continue uninterrupted, but with cleaner emissions.
For competitive exam aspirants, this announcement illustrates how government infrastructure projects now incorporate environmental compliance as a mandatory component, reflecting the integration of sustainability into public works.