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Anchor, replicate, cluster.
How one carefully assessed plant could become a repeatable design and, over time, a group of plants in one industrial region.
A model for plants that large projects overlook
As we understand it, gas-fermentation reference plants tend to sit at large integrated mills, which have the capital, engineers and time for a standalone project. Many small and mid-sized plants have the gas but not the capital, spare teams or appetite for a new process.
Our model is built for those plants: a standard modular unit, built and run beside the mill, then repeated across a cluster. The mill keeps making steel.
Three stages, one repeatable design.
Select a stage to see it drawn. This is a plan for how we intend to grow, not a record of what has been built.
Illustrative. Punarva Bio is an early-stage venture and this shows our planned approach, not completed projects.
How a unit joins a host plant
One gas tie-in and one ethanol outlet. The plant's own process is left as it is, and the energy it gives up is accounted for in the commercial terms.
Concept only. Tie-in design, safety systems and commercial terms are agreed with each host.
Who does what
An indicative split of operating responsibilities. Final roles depend on the agreements reached with each party.
Host plant
- Shares gas data and allows sampling
- Agrees the tie-in point and the plot
- Keeps running its own operations
- Agrees terms for gas and energy
Punarva Bio
- Leads feasibility and project development
- Brings technology and engineering partners together
- Plans to build and operate the unit
- Sells ethanol to qualified buyers
Technology licensor
- Owns and licenses the process
- Sets the gas specification
- Supports start-up and training
Engineering partners
- Detailed design and procurement
- Construction and commissioning
- Integration with plant systems
What decides commercial feasibility
We do not publish costs or returns. They depend on these eight factors, and we will state them only once site data supports them.
Gas volume and composition
Enough usable gas to justify a module.
Continuity of supply
Steady operation across the year.
Energy the host gives up
A fair credit for gas no longer used for power or heat.
Site and utilities
Land, power, water and access.
Capital and operating cost
To be established through India-specific feasibility work.
Ethanol offtake
Buyer terms, specification and logistics.
Permits and approvals
Environmental, safety and fuel-sector approvals.
Risk allocation
Who carries which risk, written into agreements.
How an engagement could begin
An indicative path from first conversation to a pilot plan. Each step is agreed with the host before the next begins.
Conversation and NDA
We discuss the opportunity and sign a confidentiality agreement.
Site data and gas assay
The plant shares gas data and we sample the stream.
Feasibility and sizing
We size a unit, estimate costs and test the economics.
Pilot design and term sheet
If the case holds, we design a first unit and agree terms.