What Is CBG?
Compressed Biogas is chemically identical to CNG, but made from organic waste instead of fossil fuels. It’s carbon-neutral, burns cleaner than diesel or petrol, and is eligible for multiple government subsidy schemes.
A Nexgen Energia CBG plant converts crop residue, cattle manure, food scraps, and municipal organic waste into two revenue streams: high-purity CBG fuel and premium bio-fertilizer both bought back by Nexgen Energia at agreed rates.
Technical process flow
Collect biogas
Remove H₂S & siloxane
Moisture removal
CO₂ removal (PSA)
Compression
Quality CBG
Inside the Plant
1
Reception area — feeding
Loading, unloading, pre-treatment, and sorting of raw organic materials. Designed for your specific feedstock type.
2
Digester area — fermentation (CSTR)
Waterproof, airtight anaerobic digestion tanks with agitators. Fermentation runs continuously biomass is shifted to prevent layer formation.
3
Purification area — gas cleaning (PSA)
Gas holder collects biogas. Pressure Swing Adsorption system removes CO₂, H₂S, and moisture. Output: high-purity methane.
4
Filling area — compression & cascading
CBG is compressed into cascade cylinders, ready for transport to off-takers or direct industrial customers.
5
Bio-fertilizer area — slurry tank & packaging
Your plant produces two fertilizer by-products: liquid slurry and solid organic manure. Nexgen Energia buys back 100% of both.
Capacity Range
2 TPD
~2 acre
Farm & dairy waste
Entry-scale CBG + bio-fertilizer
Individual farmers, small dairies
5 TPD
~5 acre
Crop residue + manure
CBG + bio-fertilizer
Farmer collectives
10 TPD
~10 acres
Mixed agri + food waste
CBG + bio-fertilizer
Agri-businesses
15 TPD
~15 acres
Agri + municipal organics
CBG + bio-fertilizer
Cooperatives, developers
25 TPD
~25 acres
Municipal + industrial organics
Flagship-scale CBG + bio-fertilizer
Large landowners, municipalities
Feedstock
Crop residue
Straw, stalks, husk and other agricultural residue.
Animal manure
Cattle and poultry manure abundant and consistent.
Food waste
High-energy organic waste from food processing.
Municipal & industrial
Urban organic waste and industrial organic by-products.
Why It Works
100% production buyback
Every unit of CBG and bio-fertilizer your plant produces Nexgen Energia buys it. No sales effort needed from you.
Loan up to ₹2 Crore
Collateral-free financing assistance through our banking partnerships. Government subsidies reduce your outlay further.
5-year tax holiday
Income tax exemption for the first 5 years of CBG plant operations under Indian government policy.
Generational income
A CBG plant is a long-life infrastructure asset. It earns for you and potentially for your children after you.

