Bio CNG

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Where Food Waste
Becomes Fuel!

Bio CNG brings to us a two-faceted advantage. On one hand, it is an effective way to dispose of wet waste and convert it efficiently into energy. On the other, it gives an amazing alternative for fuel with more calorific value and less carbon footprint. SWMS, in its commitment to focus on Waste-to-Energy projects by the Government, has engaged with the Greater Chennai Corporation to set up a Bio CNG plant in Egmore, Chennai.

SWMS has partnered with the Corporations of Tiruppur and Tirunelveli, and many other Municipalities to carry out the Primary and Secondary collection and transportation.

Beauty Shines Where Cleanliness Begins.

Efficient Waste Collection & Transportation Across Regions

We having a proven track record in waste collection and transportation (C&T), ensuring efficient and large-scale waste management solutions across multiple regions.

Handling over 3,00,000 metric tons of waste per year across various Urban Local Bodies.

A dedicated workforce of 2,500+ employees actively managing C&T operations on the ground.

Extensive fleet of specialised vehicles to support seamless waste collection and transportation.

Capability to manage projects of any scale, with the ability to deploy and commence operations within 45-60 days.

Advanced waste management ERP system, ensuring real-time tracking and optimized operations.

Process-driven service delivery, promoting efficiency and sustainability.

Highly effective source segregation, enhancing recycling and waste processing efficiency.

Best-in-class supply chain solutions tailored for various types of waste management needs.

Transparent and data-driven approach, ensuring accountability and operational excellence.

Our Work

Green Energy Milestone!

SWMS with a joint PPP venture with Greater Chennai Corporation (GCC), had constructed 100 metric tonnes capacity plant at Chennai.

Local Restaurants Go Green!

Many local restaurants are already engaged with SWMS for the Bio CNG supplies.

zero-waste technology

It’s a zero-waste technology and forms a critical part along with composting units in the overall waste management cycle

Towards a Greener Future!

SWMS has plans to implement more Bio CNG plants across India to create clean energy in pursuit of a greener environment.

Corporations

Greater Chennai Corporation
Alandur Zone
Valasaravakkam Zone
Perungudi Zone
Tiruppur Corporation
Salem Corporation
East Tambaram Municipal Corporation
West Tambaram Municipal Corporation
Pallavaram Municipal Corporation
Avadi Municipal Corporation
Tirunelveli Corporation
Trichy Corporation

Municipalities

Thiruverkadu Municipal Corporation
Alandur Municipal Corporation
Valasaravakkam Municipal Corporation
Maduravoyal Municipal Corporation
Poonamallee Municipal Corporation
Madhavaram Municipal Corporation
Maduranthakam Municipal Corporation
Manali Municipal Corporation
Neyveli Township

Adbuta: Engineering the Future of Sustainable Energy

SWMS has launched ‘Adbuta’—our dedicated brand for EPC (Engineering, Procurement, and Construction) and O&M (Operations & Maintenance) of Bio-CNG plants. Under the Adbuta banner, we aim to design, build, and operate multiple Bio-CNG facilities across India using advanced and future-ready technologies, driving the nation towards energy independence and a greener

Gallery

Bio CNG, with 92-98% methane, is a purified biogas variant, far more efficient than regular biogas (55-65% methane). Its high methane content boosts energy output to 52,000 KJ/Kg, compared to 19,500 KJ/Kg in biogas.

The high calorific value of Bio CNG would mean that it can be used for power generation and as an environment-friendly fuel. It also doesn’t leave any residues as it is completely used up unlike LPG.

The calorific value of Bio CNG is slightly higher than LPG, making it an ideal candidate for commercial cooking, replacing LPG cylinders.

What makes Bio CNG special?

A pioneering player in the green energy sector, specializes in Compressed Bio Gas (CBG or Bio CNG) solutions and is dedicated to fostering sustainable energy transitions.

We Develop our own plants. Also we have a robust focus on Engineering, Procurement, and Construction (EPC), Operations & Maintenance (O&M) and Research and Development.

From project development to long-term operations, SWMS provides full-service support for bio-CNG initiatives, ensuring smooth and efficient project delivery.

Experts in setting up inward supply chain of feed for the plant and developing outward supply chain for evacuating the gas

Bio CNG Plant - Chetpet

Bulk Waste Generators (BWG) Collection

100 MT of segregated food and wet waste from City’s BWGs (450+) from 15 Zones consisting of Hotels, Markets, Canteens, Apartments, Marriage Halls and Koyambedu market through its logistics arm BIGBIN. This also includes about 10 MT of Cow dung collected across the City. Also 20 MT from Koyambedu market.

First BioCNG plant in Tamil Nadu, India

based on Municipal Solid Waste (MSW). GCC has leased the land and SWMS has built this Waste to Energy plant of 100 TPD Municipal Solid Organic Waste

First PPP Projects in BIOCNG

PPP mode under Design Finance Built Operate and Transfer (DFBOT) basis for 20 years. Plant has been in operation since 15-Nov 2021.

Our Process

Step 01: Wet Waste Collection & Feedstock Preparation

Source-segregated wet municipal solid waste (MSW), primarily from bulk waste generators, is collected and delivered to the Bio-CNG facility. The feedstock is screened, shredded, and homogenized to ensure consistent input quality.

Step 02: Anaerobic Digestion & Biogas Generation

The prepared organic waste is transferred via automated feeding conveyors into anaerobic digesters. Within these sealed, oxygen-free chambers, the biodegradable matter undergoes microbial digestion, generating raw biogas over a controlled retention period.

Step 03: Biogas Purification & Compression

Raw biogas is passed through advanced purification systems to remove carbon dioxide (CO₂), hydrogen sulfide (H₂S), and moisture. The resulting high-purity methane (Bio-CNG) is then compressed and stored in cascade cylinders for fueling or transportation.

Step 04: Bio-CNG Distribution & Energy Utilization

The compressed Bio-CNG is supplied for use as a clean, renewable fuel alternative in industrial, commercial, or vehicular applications—significantly reducing fossil fuel dependency and carbon emissions.

Step 05: Organic Manure Recovery

The digestate residue left after biogas extraction is processed, dewatered, and refined into nutrient-rich organic manure—enhancing soil fertility and supporting sustainable agriculture.

Our Brand for EPC and O&M of BioCNG Plants

Our Brand for Feed Supply Chain

Our Brand for Product Supply Chain