With rapid industrialization and urbanization, air pollution has become one of India’s most pressing environmental challenges. Among the many contributors to air pollution, diesel generator (DG) sets play a significant role, especially in urban areas where power backup systems are widely used. DG sets emit harmful pollutants such as particulate matter (PM), nitrogen oxides (NOx), carbon monoxide (CO), and hydrocarbons (HC), which adversely affect air quality and human health.

To address this issue, the Government of India, along with regulatory bodies like the Central Pollution Control Board (CPCB) and the National Green Tribunal (NGT), has mandated the use of Retrofit Emission Control Devices (RECDs) for in-use DG sets. These devices have emerged as a practical and cost-effective solution to reduce emissions while ensuring compliance with environmental norms.

What is a Retrofit Emission Control Device (RECD)?

A Retrofit Emission Control Device (RECD) is an advanced pollution control system installed in the exhaust line of an existing diesel generator. It is specifically designed to reduce harmful emissions without replacing the DG set.

RECD systems typically use technologies such as:

• Diesel Oxidation Catalysts (DOC)

• Diesel Particulate Filters (DPF)

These components work together to filter and chemically treat exhaust gases, significantly reducing pollutants. According to industry data, RECDs can reduce emissions by up to 90-96%, depending on operating conditions and engine health.

Environmental Norms and Regulatory Framework in India

India has introduced stringent emission norms to control pollution from DG sets. The CPCB IV standards define permissible emission limits and mandate the retrofitting of older DG sets.

Key regulatory highlights include:

• DG sets must be retrofitted with RECDs.

• The NGT has made RECD installation mandatory to curb air pollution, especially in highly polluted regions.

• Non-compliance may lead to penalties, disconnection of DG sets, or legal action under environmental laws.

These regulations are part of broader initiatives like the National Clean Air Programme (NCAP), aimed at reducing particulate pollution across Indian cities.

Why RECD is Essential for DG Sets

RECD systems effectively capture and neutralize harmful pollutants such as PM, NOx, CO, and HC, improving overall air quality.

Installing a CPCB-approved RECD ensures that industries and commercial establishments meet legal requirements and avoid penalties.

Replacing an old DG set with a new compliant model can be expensive. Retrofitting with an RECD offers a more economical solution while extending the life of existing equipment.

By reducing toxic emissions, RECDs contribute to lowering respiratory and cardiovascular health risks in urban populations.

Organizations adopting RECD technology demonstrate environmental responsibility and align with sustainability goals and ESG frameworks.

Working Principle of RECD

The RECD is installed at the exhaust outlet of a DG set. When exhaust gases pass through the device:

1. The Diesel Oxidation Catalyst converts carbon monoxide and hydrocarbons into less harmful substances like carbon dioxide and water.

2. The Diesel Particulate Filter captures fine particulate matter (soot).

3. Advanced regeneration systems ensure continuous cleaning of filters for long-term efficiency.

This combination of filtration and catalytic processes ensures high efficiency in emission reduction while maintaining generator performance.

Aceget: A Leading RECD Manufacturer and Dealer in India

When it comes to choosing a reliable RECD manufacturer in India, Aceget stands out as a trusted and CPCB-approved provider.

Aceget has established itself as a leading manufacturer and supplier of Retrofit Emission Control Devices, offering solutions across a wide range of DG set capacities from 25 kVA to 1000 kVA.

Why Aceget is the Best Choice for RECD Solutions

Aceget’s RECD systems are tested and approved as per CPCB procedures and comply with NGT and regulations, ensuring complete legal compliance.

Their devices are capable of reducing particulate matter and harmful gases by up to 96% or more, depending on operating conditions..

Aceget RECD systems are equipped with:

• Stainless steel housing

• IoT-enabled monitoring systems

• Automatic regeneration technology

• Touch display interfaces for real-time tracking

Aceget offers customized RECD solutions for various DG capacities, including 25 kVA, 50 kVA, 100 kVA, and higher, making them suitable for industries, hospitals, IT parks, and commercial complexes.

Their RECD systems are designed for durability, with an operational life of up to 40,000 hours (approximately 10–12 years), ensuring long-term value.

Aceget provides end-to-end services, including installation, maintenance, and compliance support across India, making them a reliable partner for businesses.

With successful installations across multiple sectors, Aceget has built a strong reputation for quality, compliance, and customer satisfaction.

Choosing the Right RECD Manufacturer

Selecting the right RECD provider is critical for compliance and performance. Businesses should consider:

• CPCB approval and certification

• Proven emission reduction performance

• Technical support and after-sales service

• Compatibility with existing DG sets

• Transparent documentation for regulatory inspections

Choosing a trusted manufacturer like Aceget ensures not only compliance but also peace of mind during audits and inspections.

Conclusion

As India continues its fight against air pollution, the role of Retrofit Emission Control Devices (RECDs) has become increasingly important. These devices offer a practical, efficient, and cost-effective way to reduce emissions from diesel generator sets while complying with stringent environmental norms.

With regulatory enforcement becoming stricter, businesses can no longer afford to ignore emission standards. Installing a CPCB-approved RECD is not just a legal requirement. It is a step toward a cleaner, healthier, and more sustainable future.

In this evolving landscape, Aceget has emerged as a leading RECD manufacturer and dealer in India, providing reliable, high-performance solutions that help industries meet compliance requirements while contributing to environmental protection.