Our Services: Supporting your
transition to green energy

From procurement to delivery, supporting every stage of the supply chain, BioGem Express (bGX) provides the tools and expertise you need to integrate biomethane into your strategy—simply, reliably, and with full flexibility.

Biomethane sourcing and supply

At BioGem Express (bGX), we make biomethane accessible and reliable. As part of the Fremsyn Group, with our own production and an extensive network of producer partners across Europe, we provide flexible supply options to help you achieve your decarbonization goals.

bGX offers the right product for you — whether you want to increase your share of biomethane or substitute natural gas in your portfolio.

Extensive and strong European network
Flexible, tailor-made solutions: GoOs with or without physical biomethane
Offtake and Supply agreements ranging from short-term to long-term

“We believe a partnership should feel like an advantage.
You get more than just a supply; you get the security of our entire network and the clarity of a strategy built just for you. We’re not just your supplier; we’re your partner in the green transition.” Marcel Hüberli, Head of Sales

Solutions Shaped to You

Your goals are the starting point. Our expertise is the path.
We move beyond one-size-fits-all solutions to design a biomethane strategy that gives you a clear advantage.

For our producer partners, this means expert guidance on everything from optimizing your feedstock to navigating carbon emissions and certification requirements. The result is long-term supply and security.

For our client partners, it means having the perfect blend of biomethane and Guarantees of Origin. We build your ideal energy mix with clarity and flexibility.

We handle the complexities. You get the results.

Subsidized/Unsubsidized biomethane
With or without physical mass-balanced deliveries
Feedstock or carbon emissions requirements
Certifications / Labels

Regulatory and compliance support

Regulations are complex. That’s why we keep track of policy updates so you don’t have to. While you focus on running your business, we monitor policy changes, read the fine print, and track every update to ensure your biomethane supplies continue to hold their value today and tomorrow.

bGX operates in both voluntary and regulated market deliveries. Our products fulfill the criteria required by national legislations and comply with market requirements such as:

German’s BEHG, EWärmeG, EEWärmeG, and GEG
Switzerland’s OZD/BAZG list and VSG/ASIG biogas guidelines
EU Renewable Energy DirectivesG
EU Emission Trading Scheme (ETS)
National transport schemes

bGX handles regulatory compliance through accredited auditors. Every GoOs, reports, and process stays aligned with current legislation and requirements standards.

Our services include

Guidance on industry standards and certification requirements
Environmental agency reporting and submissions
Continuous monitoring of regulatory changes and updates

Guarantees of Origin and sustainability certificates

Guarantees of Origin (GoOs) verify that your energy comes from renewable sources. Proof of sustainability (PoS) certificate is used for a broader certification to deliver information such as CO2 emissions savings and feedstock used.

bGX delivers GoOs issued by the national issuing body and complete it with full documentation, audits, and/or Proof of Sustainability (PoS) with or without physical mass-balanced delivery.

Our offerings:

Voluntary market GoOs – helping companies green their operations
Compliance market GoOs – meeting regulatory requirements (e.g., mobility sector)
Combine GoOs with physical mass balanced deliveries

“Energy transition shouldn’t feel like a maze.
With the right process in place, you move step by step —
clear on your choices, confident in your impact, and free
to focus on building what comes next.”

Service process overview

When it comes to renewable energy, clarity matters. That’s why bGX gives you  a simple process that turns complex markets into straightforward steps.
From your first questions to long-term delivery, you move forward with confidence, knowing every detail is transparent and tailored to your goals.

Here’s how it works:

1. Consultation
You define your energy goals and compliance needs, with our guidance to   frame the right strategy.

2. Procurement
You secure the right mix of biogas certificates and, if needed,   physical deliveries.

3. Compliance
You receive complete documentation, audits, and Proof of Sustainability   to demonstrate your commitments.

4. Support
You benefit from a long-term partnership built on flexibility, adapting   as your objectives and regulations change.

Guarantees of Origin and sustainability certificates

Guarantees of Origin (GoOs) verify that your energy comes from renewable sources. Proof of sustainability (PoS) certificate is used for a broader certification to deliver info such as CO2 emissions savings & feedstock used.

bGX delivers GoOs issued by national issuing body and complete it with full documentation, audits, and/or Proof of Sustainability (PoS) along with or without physical mass-balanced delivery.

Our offerings:

Voluntary market GoOs – helping companies green their operations
Compliance market GoOs – meeting regulatory requirements (e.g., mobility sector)
combine GoOs with physical mass balanced deliveries

“Energy transition shouldn’t feel like a maze.
With the right process in place, you move step by step —
clear on your choices, confident in your impact, and free
to focus on building what comes next.”