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Breeze through Certification

Atmen automates certification workflows across hydrogen, e-fuels, and biomethane, from real-time supply chain data to auditable product claims. Bring clarity and control to your compliance journey — all in one place.

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The Data & Certification Backbone for Decarbonized Supply Chains.

Compliance and certification aren’t just a list of checkboxes.

It’s a challenge for business developers selling a green premium, engineers calibrating supply chains, procurement teams optimising the intake of the right feedstocks, and supply chain managers integrating regulatory constraints into their daily workflows.

With 18 industrial supply chains already onboarded, Atmen combines frontier technology with deep regulatory expertise to help you stay ahead in a fast-moving compliance landscape.

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What our customers say

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With a scalable and modern software stack, Atmen's service stands out as a continuous solution rather than a one-off product. It's clean and clear, despite the massive amount of complexity behind it.

U.S based customer
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The biggest value proposition is the view on regulatory compliance, which to me is the most complex aspect. We can model things ourselves, but not having to spend hours reading into compliance is of massive value. Turning the production numbers into a regulatory framework is super powerful.

U.S based customer
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The team's dedication and expertise truly stood out to us as they provided a solid and persuasive approach to tackling the nascent and somewhat unpredictable hydrogen certification market in Europe. What really impressed us was their quick response times and rapid turnaround.

Max M
Business Developer
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Green Certification as a Service

Simulate & Ensure Compliance From Day One

Atmen's pre-operations modelling is the fastest way to de-risk supply chains and secure certification-readiness before go-live. How much of your future supply output will be certifiable as green?

Input your plant engineering, supply chain data, and energy inputs to simulate energy flows and carbon intensity. This helps confirm eligibility fo EU-accredited certification schemes, speeds up certification readiness, and builds trust with offtakers and investors. Now compatible with EU RFNBO.

Methodology developed in cooperation with TÜV NORD EnSys GmbH & Co. KG  

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Streamline Green Certification Workflows

Think of Atmen as the technology layer on top of operational supply chains, enabling continuous compliance and streamlining the official sustainability certification workflows. At scale and across borders.

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Simplify & De-Risk Audits

You can manage your entire audit preparation directly in Atmen's platform. This feature helps you collect documents, reconcile data, and generate audit-ready reports, with checklists and reminders based on your certification scheme. Invite external auditors, share granular data, and automatically generate key evidence like mass balances and sustainability proofs.

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What our customers have achieved

0.423M+tCO2e

Saved yearly by our customers

>70%

Primary data coverage of key ingredients within first 3 months

The Atmen team brings together 15 years of experience at major European energy companies and is backed by some of the best investors in the space.

10.3.2026

Siemens, Atmen and TURN2X Build the Blueprint for Certified Renewable Gas Production

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  • Germany advanced RED III transposition last week, introducing explicit quotas for RFNBO (Renewable Fuels of Non-Biological Origin) for the first time
  • Siemens, Atmen, and TURN2X have built the first end-to-end model for RED III-ready renewable gas production at TURN2X's commercial e-methane plant in Miajadas, Spain
  • The Miajadas plant is fully operational, with 100 percent of its output sold under long-term offtake agreements, proof that green gas can be produced, certified, and delivered at a commercial scale today.

(Munich, March 10, 2026)  Last week, Germany took a significant step toward closing remaining gaps in renewable fuel regulation. The Bundestag held the first reading of the Second Law on the Development of the Greenhouse Gas Reduction Quota, which will transpose RED III into national law and, for the first time, introduce explicit quotas for green hydrogen and e-fuels in the transport sector.

While most of Europe works toward RED III compliance, industrial offtakers are already demanding certified molecules as regulatory deadlines near. Siemens, Atmen, and TURN2X, all based in Munich, have developed the first end-to-end model for RED III-ready renewable gas production, from automated plant operations to certified product delivery. The plant of the future is already running at TURN2X's first commercial e-methane plant in Miajadas, Spain.

TURN2X produces climate-neutral e-methane by combining green hydrogen with biogenic CO₂. The company plans to scale this model across Europe, aiming to cover 10 percent of Germany’s gas demand by 2031. Miajadas demonstrates the commercial viability of this pathway, with 100 percent of its renewable gas output sold under long-term off-take agreements. 

Intelligent operation and an ecosystem approach by Siemens

Philipp Glaser, Siemens Digital Industries


Siemens provides the industrial backbone for this model, including advanced automation systems, digital twin technology for remote plant operation, and standardised, secure deployment of future facilities.

Siemens adopts an ecosystem approach, collaborating with leading partners such as Atmen rather than developing every component in-house. “This is exactly how we at Siemens want to go forward in renewable energies,” says Philipp Glaser, Siemens Digital Industries. “We want to partner with the best solutions so our customers get innovation, technology, and speed of implementation.”

The data infrastructure layer provided by Atmen

Flore de Durfort, CEO of Atmen at the production site in Miajadas, Spain.

Atmen, a regulatory technology company, provides the certification data layer. At Miajadas, this enabled the site to reach full RFNBO certification, making automated compliance part of day-to-day operations.

“Certification isn’t a nice-to-have; it’s market access and business case realization,” says Flore de Durfort, CEO of Atmen. “Our platform turns operational data into verifiable, auditable proof that keeps production continuously certification-ready so that renewable fuel producers can scale with confidence.”

The plant of the future, run by TURN2X

Dominik Schollenberger, CTO of TURN2X at the production site in Miajadas, Spain.

For TURN2X, combining Siemens’ industrial technology with Atmen’s compliance layer creates a blueprint for rapid, reliable expansion.

“Scaling across Europe brings two challenges: maintaining operational excellence and meeting increasingly complex certification requirements for renewable fuels,” says Dr.  Dominik Schollenberger, CTO of TURN2X. “The Miajadas plant shows that when intelligent operations and built-in compliance come together, e-methane can scale with the reliability our customers expect.”

The three companies share a single goal: scaling green energy production with intelligence, trust, and speed.

The plant of the future isn’t a vision. It’s running today in Miajadas.

About TURN2X

TURN2X develops and operates projects using its proprietary technology to produce e-methane by combining biogenic CO₂ with green hydrogen. The company focuses on scalable, infrastructure-ready renewable gas solutions that support industrial decarbonization and energy security.

About Siemens 

Siemens AG (Berlin and Munich) is a leading technology company focused on industry, infrastructure, mobility, and healthcare. The company’s purpose is to create technology that transforms everyday life for everyone. By combining the real and the digital worlds, Siemens empowers customers to accelerate their digital and sustainability transformations, making factories more efficient, cities more livable, and transportation more sustainable. A leader in industrial AI, Siemens leverages its deep domain know-how to apply AI – including generative AI – to real-world applications, making AI accessible and impactful for customers across diverse industries. Siemens also owns a majority stake in the publicly listed company Siemens Healthineers, a leading global medical technology provider pioneering breakthroughs in healthcare. For everyone. Everywhere. Sustainably. In fiscal 2024, which ended on September 30, 2024, the Siemens Group generated revenue of €75.9 billion and net income of €9.0 billion. As of September 30, 2024, the company employed around 312,000 people worldwide on the basis of continuing operations. Further information is available on the Internet at www.siemens.com.

About Atmen

Atmen (atmen.co) is a regulatory technology company providing the data infrastructure that powers trusted certification of industrial products. Atmen focuses on automating certification and enabling large-scale, verifiable supply chain transparency across energy-intensive industries. 

Founded in January 2023 by energy and regulation experts Flore de Durfort, Quentin Cangelosi, and Erika Degoute, Atmen has raised €6.3M to date to build technology that certifies industrial goods, starting with renewable gases. 

Headquartered in Munich, the company's platform is deployed across industrial sites in 9 countries, automating certification workflows and enabling verifiable proof of product attributes throughout the supply chain.


The Miajadas plant is fully operational, with 100 percent of its output sold under long-term offtake agreements, proof that green gas can be produced, certified, and delivered at a commercial scale today.
29.9.2025

What It Really Takes: Behind Germany’s First RFNBO-Certified E-Methane Site

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Germany’s first RFNBO-certified e-methane facility is now live in Werlte. The Atlantis site, operated by Hy2gen, has become one of the very first industrial plants worldwide to achieve certification under the CertifHy scheme. 

Behind the scenes, Atmen’s compliance automation platform provided the digital backbone that made certification possible. Together, Hy2gen, CertifHy, and Atmen proved that renewable molecules can be tracked and certified at an industrial scale under Europe’s strict rules.

A Milestone for Germany

In May 2025, Hy2gen’s Atlantis facility in Werlte became the first site in Germany to be certified under the EU’s RFNBO scheme for e-methane. 

“I’m proud we are now officially among the first sites worldwide to produce hydrogen and methane molecules with RFNBO certification here in Werlte,” said Matthias Lisson, Country Director at Hy2gen.

“In basic terms, the RFNBO certification proves that every molecule of renewable hydrogen or renewable methane produced here in Werlte can be precisely tracked for its carbon footprint emitted throughout the entire lifecycle.”
Atlantis Electrolysis Plant

Proving the System Works

RFNBO certification is a stress test for data management and carbon accounting in alignment with operational supply chains. Success depends on the entire ecosystem: producers, certifiers, auditors, and the right technology.

“I am really proud to share this milestone for CertifHy, for Atmen, for Hy2gen, and also for the entire renewable hydrogen and e-fuels industry,” said Matthieu Boisson, Managing Director at CertifHy.

“The Hy2gen Werlte site is one of the very first industrial facilities worldwide to be certified under the CertifHy EU RFNBO scheme.”

The Role of Technology

Atmen’s Automate platform turned regulatory complexity into operational reality. It transformed more than 70,000 data points into audit-ready documentation, automated the issuance of Proof of Sustainability, and delivered a secure, up-to-date GHG calculator. By digitizing the process, Atmen helped cut preparation time by up to two months.

“Atmen’s role is to connect the dots in the space of certification,” said Flore de Durfort, Co-Founder and CEO of Atmen.

“We do two things. First, we bring clarity: we bridge the gaps between schemes, the rules of the game, and the reality of a very concrete supply chain. Second, we accelerate: we provide pre-built automated workflows for data ingestion, traceability, and verification.”

For Hy2gen, the impact was clear. “Without your tool, we wouldn’t have survived the audit,” said Christian Zuber. “Without Atmen, it would be double the work. We saved two months of full-time effort thanks to Automate.”

Atmen's Automate offers traceability, certificate portfolio, and audit management in line with leading certification schemes

From Ambition to Execution

The Werlte milestone proves that RFNBO certification at an industrial scale is possible when producers, certifiers, and technology providers work together.

“Certification of a product is always teamwork,” said Lisson.

“In this case, it was crucial to have Atmen provide the database and the software, reducing the time spent on all the documentation work within the certification scheme. Together, we succeeded as a team, with CertifHy providing the scheme.”

The lesson is clear: compliance can scale when built into operations, not bolted on. Standardization accelerates trust. Digital tooling reduces friction across the value chain.

“This is what building energy resilience looks like,” Lisson concluded. By achieving Germany’s first RFNBO e-methane certification, Hy2gen has helped move the sector from ambition to execution. With the right tools and partners, more producers are now in a position to follow.

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Turn the complex process of green certification into a simple, reliable, automated exercise.

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