In recent years, air pollution has emerged as one of India’s most pressing environmental challenges. RECD Diesel generator (DG) sets, ubiquitous across industries, hospitals, commercial buildings, and construction sites, are a significant source of localized air pollution. To address this, the Government of India, through regulatory bodies like the Central Pollution Control Board (CPCB) and the National Green Tribunal (NGT), has made it mandatory for many DG sets to install emission control systems known as Retrofit Emission Control Devices (RECDs). This blog explains what RECD is, why it’s mandatory, compliance timelines, benefits, costs, and answers key FAQs related to RECD installation in India.

What is a Retrofit Emission Control Device (RECD)?

A Retrofit Emission Control Device (RECD system) is an add-on system fitted to diesel generator exhausts to significantly reduce harmful pollutants. These emissions include particulate matter (PM), nitrogen oxides (NOx), carbon monoxide (CO), and hydrocarbons (HC)  all of which contribute to poor air quality and health issues in urban and industrial areas. RECDs use technologies such as Diesel Oxidation Catalysts (DOC) and Diesel Particulate Filters (DPF) to capture and neutralize these pollutants before they exit into the atmosphere.

Why RECD Is Mandatory for DG Sets in India

To curb air pollution and protect public health, environmental authorities in India have introduced mandates requiring certain diesel generator sets to retrofit with emission control devices.

Regulatory Background

• The CPCB and Ministry of Environment, Forest and Climate Change (MoEFCC) have issued guidelines requiring DG sets manufactured between 1 July 2004 and 30 June 2023 (up to 800 kW) to be retrofitted with RECDs.
  
  

• The National Clean Air Programme (NCAP) and directions from the National Green Tribunal (NGT) have reinforced this by defining air quality action plans and mandating emission control measures in non-attainment cities like Delhi NCR, Mumbai, Bengaluru, and Chennai.

How RECD Helps Your DG Set and the Environment

Installing an effective RECD offers tangible benefits beyond regulatory compliance:

1. Significant Emission Reduction

RECD units can reduce particulate matter and other pollutants by around 95–97%, depending on device quality and DG condition. This dramatically lowers harmful exhaust emissions, helping improve air quality.

2. Improved Public & Worker Health

Lower emissions mean fewer respiratory irritants in air around industrial and residential areas, reducing health risks associated with air pollution.

3. Legal Compliance and Risk Mitigation

Operators with compliant RECD installations avoid fines, notices, or operational shutdowns from environmental regulators.

4. Enhanced Corporate Reputation

Environmental responsibility strengthens CSR profiles and public perception, especially in high-pollution zones.

Aceget RECD – A Certified Solution for Indian DG Sets

When it comes to complying with CPCB and NGT mandates, Aceget RECD Retrofit Emission Control Device stands out as a trusted and certified option for DG sets across India.

Aceget RECD Retrofit Emission Control Device is designed to meet CPCB emission guidelines and is suitable for a wide range of DG set capacities  from 25 kVA up to 1000 kVA and beyond. These devices are tested and approved in line with current regulatory requirements, delivering high reductions in PM, CO, HC, and NOx emissions while ensuring minimal impact on engine performance and fuel efficiency.

Key advantages of Aceget RECD include:

• CPCB & MoEFCC Approved: Fully compliant devices aligned with national and tribunal standards.
  
  

• High Emission Reduction: Achieves approximately ~96% reduction in harmful pollutants.
  
  

• Easy Installation: Can be retrofitted to existing DG exhaust systems with professional support.
  
  

• Durability: Designed for long service life with periodic maintenance to ensure continued efficiency.
  
  

Installing an Aceget RECD not only helps meet legal obligations but also reinforces your commitment to cleaner air and sustainable operations.

RECD Compliance FAQ (Frequently Asked Questions)

Q1. Is RECD installation mandatory in India?

Yes. The CPCB and State Pollution Control Boards have mandated RECD installations for diesel generators (especially those manufactured between July 2004 and June 2023, up to 800 kW), particularly in pollution-regulated areas.

Q2. Which pollutants does RECD reduce?

RECD devices significantly reduce particulate matter (PM), hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx).

Q3. Does installing a RECD affect DG engine performance?

No  properly designed and certified RECDs do not negatively impact generator performance. They are engineered to manage emissions without causing backpressure or efficiency loss.

Q4. How long does installation take?

Installation time varies with generator size but typically ranges from 2–4 days with professional installers.

Q5. What is the cost of a RECD?

Prices vary based on DG capacity and technology, but RECD systems can range widely depending on specifications.

Q6. Do I need periodic maintenance after installation?

Yes.RECDs require periodic checks to ensure filters and controls are functioning properly, typically based on operational hours.

Q7. Can RECD be installed on DG sets of all sizes?

Yes  RECD solutions are available for a broad range of DG set capacities, from small residential systems to large industrial generators up to 1000 kVA and beyond.

Conclusion

Meeting environmental mandates today is not only about obeying regulations it’s about responsible operations that protect public health and future generations. With DG sets still widely relied upon for backup power, retrofitting with certified emission control technology is both a legal requirement and an ethical imperative. Solutions like the Aceget RECD Retrofit Emission Control Device offer a reliable, compliant, and efficient way to reduce emissions and ensure your DG sets are ready for current and future regulatory landscapes.