SDB Expertise

Specialist in technical expertise for biogas and biomethane production and recovery facilities

The Company

SDB EXPERTISE, founded in 2022 by Stéphane Dutremée, specialises in all types of technical expertise missions related to the production / valorisation of biogas and biomethane installations, of any scale, both in France and abroad.

With nearly 20 years of experience in design operations and operational support, as well as over 10 years of experience in expert missions (Due Diligence, consultant missions, independent technical expert), SDB EXPERTISE offers you responsive assistance and specialised advice on your projects.

Our clients

Investors / Financiers
(Private, Investment Funds, Bank)

Insurance Companies and Insurance Experts

Judicial Experts

Project Developers and Operators of Biogas Production & Valorisation Sites
(Agricultural, Industrial, Local Authorities)

Biogas Industry Professionals
(Process Engineers, Manufacturers, Equipment Suppliers, Civil Engineers)

Our clients

Biogas Industry Professionals
(Process Engineers, Manufacturers, Equipment Suppliers, Civil Engineers)

Project Developers and Operators of Biogas Production & Valorisation Sites
(Agricultural, Industrial, Local Authorities)

Investors / Financiers
(Private, Investment Funds, Bank)

Insurance Companies and Insurance Experts

Judicial Experts

SDB operates across the entire French territory for all types of missions, and extends its reach to Europe and worldwide for Due Diligence missions and site audits.

Our services

Technical Due Diligence

In response to the need to secure a financing or acquisition operation, our proven and recognised Due Diligence service provides you with in-depth technical expertise and an expert assessment of the quality of the target asset or portfolio.

We cover the following technical aspects:

– Production/valorisation processes,
– Regulatory aspects,
– insurance-related aspects,

Our Due Diligence mission may also include assessments of CAPEX for renewal/upgrading, as well as an overview of OPEX.

These missions can be carried out based on documentation and/or in
situ audits of the targeted assets.

Expert Assignment as Specialist Advisor

You are a court-appointed expert, acting within the framework of judicial expertise proceedings in the specific field of biogas production and valorisation, and require a specialised technical opinion.

Thanks to our experience in numerous judicial expert investigations, we are able to act as specialist advisors in the following areas:

– Purification
– Cogeneration
– Biology
– Waste treatment
– Anaerobic digestion
– Hygienisation
– Automation
– Etc.

Technical and Regulatory Site Audits

If you are looking for an experienced external technical assessment of a
biogas production and valorisation unit, providing you with a clear picture of its technical and regulatory compliance status, this mission is perfectly suited to your needs.


Using a proven audit framework comprising over 250 control points, we analyse the site to identify any potential non-conformities and determine
the necessary technical and regulatory improvements.

Upstream, we are able to support you before the acceptance of your unit, working alongside your various service providers (project manager, process engineers, other contractors), in order to issue a comprehensive list of reservations and secure your interests. In this context, we can assist
you all the way through to the lifting of the reservations.

This mission is also available during the operational phase, to provide a compliance assessment in the face of evolving regulations.

A technical audit may also be carried out ahead of a change in ICPE classification or a site revamping.

As part of these missions, we can assist you in estimating the identified
items, either based on Preliminary Financial Envelopes (PFE) or on the
basis of quotations obtained from contractors.

Private Technical Expert for Parties

You are dealing with an insurance-related expert assessment, or a judicial expertise case.

Whether you are the claimant or the defendant, you require experienced technical support to defend your interests.

We assist you in demonstrating your position through well-founded technical arguments and the preparation of detailed reports concerning faults, liabilities, and, where applicable, the quantification of material and immaterial damages.

Insurance Technical Expert Mission

As an insurer or an agent of the company, you need specific technical support to defend the position of the insured?

We regularly assist insurance experts and companies in the biogas sector and can:
– Support the insured in expert meetings,
– Prepare technical reports,
– iscuss opinions provided by other stakeholders.

In response to the need to secure a financing or acquisition operation,
our proven and recognised Due Diligence service provides you with indepth technical expertise and an expert assessment of the quality of the target asset or portfolio.

We cover the following technical aspects:

Production/valorisation processes,
Regulatory aspects,
– Insurancerelated aspects,

Our Due Diligence mission may also include assessments of CAPEX for renewal/upgrading, as well as an overview of OPEX.

These missions can be carried out based on documentation and/or in situ audits of the targeted assets.

You are a courtappointed expert, acting within the framework of judicial expertise proceedings in the specific field of biogas production and valorisation, and require a specialised technical opinion.

Thanks to our experience in numerous judicial expert investigations, we are able to act as specialist advisors in the following areas:

Purification
Cogeneration
Biology
Waste treatment
Anaerobic digestion
Hygienisation
Automation
Etc.

If you are looking for an experienced external technical assessment of a biogas production and valorisation unit, providing you with a clear picture of its technical and regulatory compliance status, this mission is perfectly suited to your needs.


Using a proven audit framework comprising over 250 control points, we analyse the site to identify any potential nonconformities and determine the necessary technical and regulatory improvements.

Upstream, we are able to support you before the acceptance of your unit, working alongside your various service providers (project manager, process engineers, other contractors), in order to issue a comprehensive list of reservations and secure your interests. In this context, we can assist you all the way through to the lifting of the reservations.

This mission is also available during the operational phase, to provide a compliance assessment in the face of evolving regulations.

A technical audit may also be carried out ahead of a change in ICPE classification or a site revamping.

As part of these missions, we can assist you in estimating the identified items, either based on Preliminary Financial Envelopes (PFE) or on the basis of quotations obtained from contractors.

You are dealing with an insurancerelated expert assessment, or a judicial expertise case.


Whether you are the claimant or the defendant, you require experienced technical support to defend your interests.


We assist you in demonstrating your position through wellfounded technical arguments and the preparation of detailed reports concerning faults, liabilities, and, where applicable, the quantification of material and immaterial damages.

As an insurer or an agent of the company, you need specific technical support to defend the position of the insured?

We regularly assist insurance experts and companies in the biogas sector and can:


Support the insured in expert meetings,
Prepare technical reports,
iscuss opinions provided by other stakeholders.