Sponsor
Owns feedstock, land, offtake and capital.
Turnkey CBG plants
Turnkey Compressed Bio Gas plant solutions
Saimona coordinates CBG plants as complete projects: feedstock logic, process design, partner equipment, installation support and commissioning support. Equipment is sourced and integrated through technology and manufacturing partners.
Industry context
What is CBG?
Compressed Bio Gas is upgraded biogas — biomethane — compressed for use in place of CNG or fossil natural gas where the specification is met. In Europe the same upgraded molecule is usually called biomethane; in North America, renewable natural gas.
In India, commercial quality is governed by the latest applicable BIS specification IS 16087. SATAT-era offtake commonly requires compression to 250 bar for cascade delivery to oil-marketing company retail outlets. Pipeline or city-gas injection follows additional network rules.
Saimona’s role
Project partner, not the default OEM
We help define the plant, select an appropriate flowsheet, coordinate partners, and support delivery. Whether Saimona acts as principal contractor, PMC, or both is confirmed per project.
Saimona
Defines, selects, integrates and delivers the project pathway.
Technology partners
Supply digestion, cleaning, upgrading and compression systems.
Project lifecycle
From consultation to support
01
Consultation
Understand project objectives, offtake intent and the role Saimona should play.
02
Feedstock assessment
Evaluate availability, seasonality, quality and collection logic before a flowsheet is frozen.
03
Feasibility
Technical and commercial assessment of whether the project can be designed, permitted and financed.
04
Project planning / DPR
Develop the project roadmap, study documentation and decision sequence.
05
Technology selection
Match digestion, cleaning, upgrading and compression options to feedstock and specification.
06
Engineering & design
Develop engineering requirements with selected technology and manufacturing partners.
07
Procurement & integration
Coordinate partner equipment so the plant works as one system, not a catalogue of parts.
08
Installation
Support plant installation according to the agreed execution model.
09
Commissioning
Bring the plant to operating condition against the defined process and safety envelope.
10
Project support
Technical and operational support after handover, as scoped for the project.
Plant process
Industry sequence used to brief a project
These eight blocks are how a sponsor is walked through a CBG plant. Not every project uses every block. The sequence is a briefing tool — Saimona’s job is to decide which of them this feedstock and this buyer actually need.
Organic waste
The residue or biomass that actually exists — quantity, seasonality and contamination written down before a reactor is named.
Pre-treatment
Sorting, size reduction, dilution or hydrolysis so the feed can enter the digester stably.
Anaerobic digestion
Biology converts organics to raw biogas. Reactor type follows solids, mixing and inhibitors.
Raw biogas
A methane–CO₂ mixture with hydrogen sulphide, moisture and traces. Not yet a fuel specification.
Gas cleaning
H₂S and related contaminants are removed so upgrading and compression equipment can survive.
Upgrading
Carbon dioxide is separated so methane can meet a biomethane code such as applicable IS 16087.
Compression
The upgraded gas is dried, compressed and stored for the offtake the project actually has.
CBG / end use
Cascade, dispenser, industrial pipe or network injection — whichever buyer is real.
Feedstock
Assessed before technology is chosen
Confirmed Saimona feedstocks will replace this industry list when provided.
Agricultural residue
Straw, stalks and related crop residue. Seasonality and collection radius usually decide the plant more than the digester brand.
Crop residue is abundant on paper and difficult in practice. Harvest windows, moisture, silica, open-field burning and the cost of bringing straw to a gate all sit inside the design. A residue CBG plant is a logistics and storage project as much as it is a digestion project.
Napier grass
A cultivated energy crop, not a waste stream. Land, water and farmer contracts sit inside the project, not outside it.
Napier and similar energy crops can give a more even feed than seasonal straw, but they require land, water, agronomy and a farmer relationship that lasts the life of the plant. Treat cultivation as a workstream. It is not a free feedstock sitting in a field.
Press mud
Sugar-mill filter cake. Often co-located with crushing season, storage and mill operations.
Press mud follows the crushing calendar. Storage, co-digestion and mill utilities often decide whether a CBG plant at a sugar complex is a seasonal asset or a year-round one. The mill’s operations and the CBG plant have to be designed together, not in parallel silos.
Cattle dung
Livestock manure with collection, grit and dilution as the real design constraints.
Dung is wet, gritty and variable. Collection from sheds or aggregators, sand and fibre, and how much water the process can tolerate are first-order questions. A dung-based plant is usually a slurry-handling project with gas as the product, not the other way around.
Food waste
Commercial and industrial organics. Segregation and contamination control determine whether the biology holds.
Canteens, markets and food processors can offer a dense, high-energy feed if segregation is real. Packaging, bones and oils are the usual failure modes. Characterisation and a rejection protocol belong in the brief before a reactor type is named.
Municipal organic waste
The organic fraction of municipal waste. Inerts and plastics drive whether wet or dry digestion is even plausible.
City organics arrive mixed. Plastics, grit and varying moisture decide whether a wet CSTR, a dry system, or no CBG plant at all is honest. Municipal projects also carry offtake, land and public-process risk that a private agro plant does not.
Applications
Where the gas goes
Specification CBG is a substitute for fossil gas where a buyer, a quality envelope and a logistics path exist. Further uses appear only if Saimona confirms them as commercial offers.
Vehicle fuel
Specification CBG is used as a CNG substitute in transport where the applicable biomethane standard is met.
In India this usually means gas meeting the latest applicable BIS biomethane specification, compressed for cascade or dispensing. SATAT created a market conversation with oil-marketing companies; it did not create take-or-pay. A transport offtake is a commercial workstream: quality, logistics, and who buys the molecule on a given day.
Industrial energy
On-site or nearby industrial fuel use where offtake does not depend only on a retail-outlet cascade model.
Factories, boilers and process heat can take biomethane or cleaned biogas where the site can use it. Industrial offtake can be simpler than a national retail cascade, but it still needs a specification, a pipe or cascade path, and a buyer who will still be there when the plant is running.
Waste management
Organic residues diverted from dumping or burning, with energy as a product of the treatment system.
For municipalities and agro-processors, CBG is often justified first as a waste solution. Energy revenue still has to be real, but the project logic starts with what happens to the residue if there is no plant: dumping, burning, or an effluent problem. That is a different brief from a pure fuel play.
Agriculture
Digestate managed as slurry or fermented organic manure where quality, offtake and regulation allow.
What leaves the digester is a second product. Nutrients, pathogens, moisture and a farmer or bulk buyer decide whether digestate is an asset or a disposal cost. We treat it as an offtake, not a footnote, because plants that ignore slurry rarely stay good neighbours.
What makes a project bankable
Four workstreams that sit beside the equipment list
A competent skid list is not a bankable plant. Feedstock, offtake, digestate and approvals have to be true on the same page as the compressor.
Feedstock
Contracts, seasonality, contamination and transport — written down before the digester is sized. A plant that cannot be fed is not a technology problem; it is a project that should not have been drawn.
Offtake
OMC cascades, industrial buyers or network injection. SATAT created a market; it is not a take-or-pay contract for an individual plant. Who buys, at what specification, and through which logistics, has to sit in the same brief as the compressor.
Digestate
A second product with its own buyer, specification and logistics. Plants that ignore nutrient offtake often fail as businesses even when the gas skid is competent.
Approvals
Land conversion, pollution-control, PESO and related clearances as a sequenced path — not a logo strip of certificates. The order of studies and consents is part of development, not an afterthought to procurement.
FAQs
Questions sponsors actually ask
Not as a default claim. Saimona is positioned as a project partner that evaluates and integrates technologies through manufacturing and technology partners. The exact delivery model is confirmed per project.
Project enquiry
Have a CBG project in mind?
Share feedstock, location and stage. We will discuss technology, feasibility and a practical project pathway.