Waste-to-Energy Solutions

Domestic & Commercial Biogas Plants in Kerala

Turn kitchen waste, manure and organic matter into clean cooking gas and organic fertiliser. 10,000+ biogas projects across Kerala.

Quick answer: A biogas plant converts kitchen waste, cattle manure and other organic matter into methane cooking gas and liquid fertiliser through natural anaerobic digestion. Sonetec Powers has completed 10,000+ biogas installations across Kerala — for homes, farms, hotels and institutions.

What is Biogas?

Biogas is produced when organic waste breaks down in an oxygen-free (anaerobic) environment inside a sealed digester. Microorganisms convert carbohydrates, fats and proteins into methane-rich gas — typically 55–70% methane — that burns cleanly for cooking, much like LPG but without fossil fuels.

The leftover slurry, called digestate, is a nutrient-rich organic fertiliser that improves soil health without chemical inputs. For Kerala farms growing rubber, coconut, pepper and vegetables, this closed-loop system turns a waste problem into two valuable outputs: free cooking gas and better crop yields.

Biogas plants range from compact household units fed by kitchen scraps to larger institutional digesters handling hundreds of kilograms of waste daily. Sonetec assesses your waste volume, available space and gas requirement before recommending the right capacity.

Biogas and farm waste-to-energy setup
Circular Energy Zero-Waste Kerala Living

Turn Daily Kitchen Scraps into Cooking Gas & Organic Fertilizer

A domestic anaerobic biogas digester processes organic waste without odor or flies, producing two high-value resources daily:

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Clean Methane Cooking Gas

Generates 1.5 to 2.5 hours of hot, smoke-free flame daily. Replaces up to ~0.5 domestic LPG cylinder refills every month (~6.5 kg LPG equivalent, saving ₹450–₹550/mo).

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Odourless Bio-Slurry Fertilizer

Nutrient-rich liquid bio-fertilizer ready for coconut palms, banana plants, vegetable patches, and terrace garden pots. 100% chemical-free.

Advantages of Biogas

Eco-Friendly

Reduces greenhouse emissions and reliance on LPG. Zero combustion during generation.

Reduces Pollution

Keeps waste out of landfills and improves water quality in your community.

Organic Fertiliser

Digestate replaces chemical fertilisers — healthier soil and safer food.

Clean Cooking

Smoke-free alternative to firewood — protects family health.

Low Cost

Simple technology, free feedstock from kitchen and farm waste.

Circular Economy

Waste becomes energy and fertiliser — nothing is wasted.

Biogas digester installation for organic waste

How Sonetec Installs Your Biogas Plant

Our installation process is designed for Kerala's climate and waste patterns. We start with a site visit to understand your daily organic waste output — kitchen scraps, cattle dung, agricultural residue — and estimate the biogas yield you can expect.

We then supply and install the digester, gas holder, piping and stove connection. For farm installations, we also advise on slurry distribution for fertiliser use. Most household plants are operational within a few days of installation; larger institutional plants may take longer depending on civil work.

Who Benefits Most?

  • Homes — replace or supplement LPG with gas from your own kitchen waste
  • Farms — process cattle manure and crop residue into gas and fertiliser
  • Hotels & institutions — manage high food waste volumes responsibly
  • Apartments & communities — centralised biogas with biobin collection systems

Biogas Plant Sizing & Gas Yield Matrix

Match your daily organic waste volume to the ideal digester capacity.

Plant Capacity Daily Waste Input Cooking Gas Equivalent Daily Bio-Fertiliser Output Best Suited For
1 m³ Portable 2 – 5 kg food waste 1.5 – 2.0 Hours 5 – 10 Litres liquid slurry Residential homes (3–5 members)
2 m³ Fixed Dome 5 – 10 kg waste / 25 kg dung 3.0 – 4.5 Hours 15 – 25 Litres bio-slurry Large households, homestays, mini-dairy
5 m³ Community 25 – 50 kg organic waste 7.0 – 10.0 Hours 50 – 80 Litres nutrient slurry Dairy farms (5–10 cows), restaurants
10 m³+ Institutional 75 – 150+ kg food waste All-day commercial kitchen 150+ Litres organic manure Hotels, hospitals, colleges, hostels

Use Cases

Homes

Kitchen waste to cooking gas for daily meals, reducing reliance on fossil LPG.

Farms

Cattle manure and agricultural residue to biogas and high-nitrogen organic fertiliser.

Institutions

Hotels, schools and communities with high organic waste output seeking KSPCB compliance.