Project management and technical and financial oversight for biomethane plants
Biomethane is currently the main area of development in the renewable gas sector: a plant that feeds gas of a quality equivalent to fossil methane into the grid, with a business model based on public support, long-term contracts, and project quality. It is an industrial-scale investment. Onirico Suisse supports those developing a new plant and those converting an existing biogas facility, from the feasibility study through to commissioning, ensuring a balance between plant engineering and financial viability. We work for the client, independently of the builder or supplier.
Tell us about your project →Our Biomethane Services
A biomethane project can arise from a variety of situations; in each case, the facility takes on a specific form.
Feasibility Study and Development
We take a new plant from concept to operation. Even before the business plan, two factors are key: the continuity of the feedstock and proximity to the grid connection point. From there, we develop the timeline and financial projections.
Biogas Conversion
We assess and support the transition of a biogas plant to grid feed-in, which is often the most reliable option for those whose electricity incentive program is ending. Learn more on the conversion page.
Implementation in accordance with the PNRR funding terms
This support is a grant administered by the GSE through concession agreements, for which the application period closed in June 2026. For those with an agreement, we ensure compliance with the timeline and prevent the grant from lapsing until the end of the fiscal year. See the incentives page for more details.
Due Diligence
For those purchasing or financing a facility, we independently verify the expected performance, regulatory status, contracts, and risks in relation to the value of the transaction.
Bankability and Business Plan
We develop and test the project's financial projections, including the long-term value that remains after the incentive has been factored in: guarantees of origin and the transmission market. This is what a bank or investor looks at before committing.
Construction and supervision of the project
We oversee the construction from the client’s perspective, from reviewing EPC contracts through to final acceptance testing, to ensure that the completed plant matches the approved design and the figures in the business plan.
What We Check
There are a few recurring issues that distinguish a viable biomethane project from one that is destined to fail. We’ll examine them one by one, because each one can, on its own, jeopardize the incentive or profitability.
Gas Line Connection
This is the primary factor that can derail a project. The distance from the connection point and the cost of the connection have a direct impact on the project’s economic feasibility and must be assessed before anything else.
Sourcing and Sustainability of Raw Materials
Availability, continuity, and traceability of feedstocks are also prerequisites for qualifying as “advanced biomethane”—a product derived from waste and byproducts that is more highly valued in the economic model.
Investment and EPC Contracts
The upgrading unit costs in the range of 1–2.5 million euros, and the total conversion runs into the millions, with a capital grant covering about 40% of the cost. We will verify that the construction contract supports these figures, with guarantees and provisions to protect the client.
Performance and Operating Costs
Biomethane yield, plant availability, and operating costs—which, for a plant of this size, are annual expenses and must be estimated based on the actual project, not on rated values.
Timeline and Implementation
Compliance with concession agreements and the deadlines for entering into operation—currently projected for around 2028—: a realistic timeline is just as important as a good project.
Bankability
The overall soundness of the financial statements, contracts, and hedges, which makes the project financially viable and sustainable beyond the duration of the support.
How We Work
We verify eligibility, timelines, and bankability before the project begins; then we coordinate stakeholders and suppliers and monitor costs, timelines, and critical issues through to operation. In the biomethane sector, time is a technical variable that must be managed: we develop a sustainable schedule and oversee it step by step. We understand the supply chain and its rules, from gas connection to the terms of financial support. We know where a project might lose its margin or incentive. The same team oversees every phase, ensuring that those who evaluate the project are also the ones who guide its implementation.
From fitness for duty, with timing under control.
A single point of contact for technical and financial matters at every stage.
Further Reading and Links
The complete picture of a biomethane project: in-depth coverage and other areas of focus at Onirico Suisse.
Further Reading
Services and Markets
Other sectors
A first look at the project.
Tell us where your project stands: an idea, a conversion, or a system you’re looking to purchase. We’ll respond with a preliminary technical and financial assessment—provided confidentially—that outlines feasibility, timelines, and viability before we go into detail.