Composting vs Biogas: A Clear Comparison

By BIOPOWER (BPG Renewables) · Updated June 2026 · Organic Waste Converter

Composting turns organic waste into soil-enriching compost and is simple and low-cost, while biogas (anaerobic digestion) additionally captures energy as fuel. Choose composting if you mainly need waste reduction and manure; choose biogas if you also want to offset fuel or electricity costs.

How do composting and biogas differ?

FactorComposting / OWCBiogas plant
Main outputCompostBiogas (fuel) + slurry manure
Energy recoveryNoYes
ProcessAerobic (with oxygen)Anaerobic (no oxygen)
Upfront costLowerHigher
Best forDry + wet mixed wasteWet, high-energy waste

Which is cheaper to run?

Composting and OWC machines have lower capital costs and simple operation. Biogas plants cost more upfront but generate fuel savings that often deliver faster net payback for high-volume sites.

Can you combine both?

Yes. Many large sites use biogas for wet, energy-rich waste and composting for the digestate or garden waste — maximising recovery. BIOPOWER offers OWC and biogas systems and can recommend the right mix.

Planning a waste-to-energy project?

BIOPOWER (BPG Renewables) has installed 12,898+ plants across India since 2006. Get a free site assessment and quote.

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Frequently Asked Questions

Is biogas better than composting?

Neither is universally better. Biogas recovers energy and suits wet waste; composting is simpler and cheaper. The best choice depends on waste type, volume, and whether you need fuel.

Does composting produce any gas?

Composting is aerobic and releases mostly CO₂ and heat, not usable fuel. Biogas digestion is anaerobic and produces methane-rich gas you can burn.

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What Our Clients Say

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"I would like to take this opportunity to thank team Biopower for the wonderful help and support which we have received during assessment of kitchen waste at site, location survey and successful implementation of the Biogas project at Tata Steel Guest house at Jamshedpur. Throughout this project, your conduct was phenomenal. Based on this, we have offered you a Purchase Order for 11 Biogas units to be installed at different locations. The product and service offered by you is being highly appreciated by top officials of our organisation."

JUSCO
Gaurav Anand Senior Manager, Quality Assurance Cell
JUSCO – A Tata Enterprise
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"We are proud to share that Timber Tales Resorts has taken a significant step toward sustainability by partnering with BPG Renewables Pvt Ltd during the 2024–2025 financial year. We have successfully installed a Biopower Biogas Plant (150 kg), WonderBin Composter (100 kg), and WonderBin Incinerator at our resort in Madikeri. These solutions have enhanced our waste management system and aligned perfectly with our goal of promoting responsible tourism. We sincerely thank BPG Renewables for their professional approach, seamless execution, and innovative technology."

Timber Tales
Ms Rathi Purchase Manager
Timber Tales Resorts, Coorg
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"Biopower has installed a 25 cum biogas plant at the Reserve Bank of India Thiruvananthapuram office. The plant is working successfully and the service by the team is up to the mark."

RBI
Mohammed Sajid PK Assistant General Manager
Reserve Bank of India, Thiruvananthapuram
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"We have installed Synod Bioscience (Biopower) biogas plants (100 kg, 2 units) inside our campus. Seeing the performance, a 250 kg unit has been installed inside the main canteen. The plant is running successfully."

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Mr Rahman CMG – IPRC (ISRO)