Biogas Plants
As experienced Biogas Plants manufacturers, we focus on delivering practical systems for residential, commercial, agricultural, institutional, and industrial applications.
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Energy From Five Elements
Engineering Sustainable Energy Solutions
Delivering reliable Biogas, Bio-CNG, Solar Energy, Waste Management, STP & ETP solutions across India.
OUR CLIENTS
12+
Years of field
engineering
engineering
Welcome to SEWAF!
Turning Organic Waste into Sustainable Energy
Welcome to SEWAF, where innovative waste-to-energy approaches meet practical engineering solutions. As industries and communities seek better ways to manage biodegradable waste and explore renewable energy, biogas technology creates opportunities to turn organic materials into valuable energy resources. As experienced Biogas Plant Manufacturers, we focus on understanding project requirements and exploring suitable processing systems based on feedstock availability, plant capacity, and site conditions. Our approach brings together technical planning and project coordination to help customers move towards efficient organic waste management and renewable energy generation.
- Reliable Services: Delivering dependable solutions tailored to project requirements.
- Customer-Focused Approach: Understanding client needs to recommend suitablebiogas plant solutions.
- Quality Assurance: Maintaining attention to quality across project planning and execution.
- Technical Expertise: Applying practical knowledge to support efficient biogas plant development.
01
Mission
Our mission is to deliver sustainable engineering solutions that transform waste into valuable energy resources while supporting efficient operations, responsible resource utilisation, and long-term environmental sustainability.
02
Vision
Our vision is to become India's most trusted renewable energy engineering company by delivering dependable solutions, maintaining quality standards, and creating meaningful environmental and operational value for our customers.
03
Values
Our values are built on integrity, innovation, quality, and customer satisfaction. We focus on responsible engineering practices, reliable project execution, and sustainable solutions that support lasting partnerships and positive environmental outcomes.
Why choose us
Engineering Expertise That PowersEvery Plant We Build
We believe a plant's success is measured by its performance, operational reliability, and long-term value. Our engineering approach combines practical experience, tailored design, dependable technology, and ongoing technical support to meet each project's requirements.
Experienced Engineering Team
Our engineering team brings technical knowledge and practical experience to support project planning, installation, and commissioning.
Tailored Plant Design
We consider feedstock availability, processing capacity, site conditions, and operational needs when planning plant solutions.
Proven Process Technology
We focus on suitable processing, purification, and treatment technologies to support efficient and reliable plant operations.
Integrated EPC Execution
Our approach coordinates engineering, procurement, fabrication, construction activities, installation, and commissioning according to the agreed project scope.
Preventive Maintenance Support
Our maintenance approach focuses on scheduled inspections, servicing, spare parts planning, and performance monitoring.
Responsive Technical Assistance
We support customers with technical guidance and troubleshooting to help address operational issues and maintain plant performance.
Our solutions
A complete renewable energy engineering portfolio
Eight capability lines, one accountable partner — from first feasibility note to the ninth year of maintenance.
Bio-CNG Plants
We are the best Bio CNG plant manufacturers and play an important role in developing integrated systems that transform biogas into a cleaner and more usable compressed fuel.
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Solar Energy Systems
As professional solar energy systems manufacturers, we provide dependable solutions for residential, commercial, industrial, agricultural, and institutional needs.
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Waste Management
Effective Waste Management Solutions help industries, commercial establishments, and other facilities handle waste responsibly while improving resource utilisation and operational efficiency.
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Sewage Treatment Plants
As a provider of sewage treatment plant manufacturers solutions, Sewaf helps residential, commercial, and institutional facilities process wastewater through suitable treatment technologies.
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Effluent Treatment Plants
At Sewaf, our Effluent Treatment Plant (ETP) manufacturers approach focuses on understanding these variations and developing treatment solutions
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Engineering Consultancy
At Sewaf, our Biogas Consultancy and Engineering services bring these elements together to help businesses and organisations develop practical, efficient, and scalable biogas projects.
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AMC & Plant Revamping
Biogas Plant AMC Services from Sewaf provide planned inspections, servicing, technical assistance, and corrective support to help organisations manage.
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Real Sewaf Project Installations
Explore selected installations showcasing Sewaf Energy's expertise in renewable energy, Bio-CNG, biogas, solar EPC and sustainable infrastructure solutions.
Pradeep Ramaraj
Managing Director
Managing Director
Leadership
Led by engineers who commission plants themselves
Mr. Pradeep Ramaraj is a Mechanical Engineer and renewable-energy entrepreneur with practical experience in Biogas, Bio-CNG, Solar Energy, Waste Management, Sewage Treatment and Effluent Treatment solutions.
Under his leadership, Sewaf Energy India Pvt. Ltd. delivers technically reliable, commercially viable and customer-focused renewable-energy projects across India. His expertise spans engineering design, project execution, commissioning, operational support and long-term maintenance.
Biogas
Bio-CNG
Solar EPC
Waste Management
STP
ETP
Consultancy
Plant Revamping
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Our objective is to convert waste and natural resources into sustainable energy solutions that create long-term value for our customers and the environment.
Pradeep Ramaraj — Managing DirectorWhy invest in biogas
One investment, six returns
A well-sized digester pays back through avoided fuel purchase, avoided waste disposal cost, fertilizer value and carbon performance — simultaneously.
Request Feasibility
Waste Reduction
Divert wet and organic waste from landfills and open dumping.
Clean Energy
Replace LPG, diesel and furnace oil with on-site renewable gas.
Lower Fuel Cost
Typical fuel savings of 30–60% with attractive payback periods.
Organic Fertilizer
Nutrient-rich digestate returns carbon and nutrients to the soil.
Lower Carbon Emissions
Captured methane avoids potent greenhouse gas release.
Sustainable Future
Circular resource loops that strengthen ESG and compliance.
Bio-CNG process
From cattle waste to vehicle-grade fuel
01
Cow Waste & Organics
Cattle dung, press mud, food and agro waste collected as feedstock.
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Collection & Pre-treatment
Screening, slurry preparation and consistent feed dosing.
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Digester
Anaerobic digestion at controlled temperature and retention time.
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Biogas Production
Raw biogas at 55–65% methane is captured and stored.
05
Gas Purification
H₂S, moisture and CO₂ removal to reach >95% methane.
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Compression
Multi-stage compression to 200–250 bar.
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Cylinder Filling
Cascade storage and cylinder / cassette filling stations.
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Vehicle Fuel
Bio-CNG dispensed as a direct CNG substitute.
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Organic Fertilizer
Digestate processed into liquid and solid bio-fertilizer.
FAQs
Questions we are asked most often
Still unsure whether your site suits a biogas or Bio-CNG plant? Talk to an engineer — not a salesperson.
All FAQsBiogas is a renewable fuel produced when organic matter — food waste, cattle dung, agro residue or sludge — is digested by micro-organisms without oxygen. It typically contains 55–65% methane and can directly replace LPG for cooking, heating or power generation.
Bio-CNG is purified biogas. Carbon dioxide, hydrogen sulphide and moisture are removed until methane exceeds 95%, after which the gas is compressed to 200–250 bar and filled into cylinders for use as vehicle fuel or bottled industrial fuel.
Compact pre-fabricated units are commissioned in 4–8 weeks. Mid-size biogas and STP/ETP projects typically take 3–6 months, while full Bio-CNG chains with compression and filling run 6–12 months depending on approvals and civil work.
Central and state schemes support biogas, Bio-CNG (SATAT) and solar installations. Eligibility depends on capacity, feedstock and applicant category — we assist with documentation and technical annexures for applications.
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Let's Build a Sustainable Future Together
Share your waste stream, energy demand or compliance requirement. Our engineers will revert with a feasibility view, indicative capex and a delivery timeline.