Solutions
Driven by curiosity and powered by green energy, this is where bold thinking meets thoughtful execution to build sustainable solutions. Let’s create meaningful, low-carbon impact together.
Choose a modern
Energy partner
Get our engineering help solving complex documentation, certification and trading challenges across renewable energy markets in Europe.
We combine hands-on experience from our own biogas production and trading with digital platforms that automate data, compliance and reporting.
This means less manual work and full transparency across your energy flows, from biomethane (Bio-LNG and Bio-CNG) and green electricity to e-methane and sustainable COâ‚‚.
A clear and structured setup for mass balance, certification data, contracts and guarantees of origin, making it easy for you and your customers to handle ESG and EPD reporting in an audit-ready way that works in practice.
In essence, we are the one partner that maybe best understands your technical, commercial and regulatory landscape, making it simple to work with us, managing your renewable energy and documentation the right way.
Biomass & Feedstock Optimization
SaaS: Improve plant performance and profitability with a smarter feedstock strategy.
Fremsyn helps biogas plant operators optimise the biomass mix, increase gas yield and strengthen biomethane output through advisory services and data-driven insights from Biolens.
By assessing feedstock composition, availability and digestion performance, we identify opportunities to improve biological efficiency and reduce operational risk.
This leads to more stable operations, better biomass utilisation and stronger plant economics.
Secure a solid, audit-ready data foundation for ISCC and RedCert certification with support from an experienced team of engineers and biomethane specialists.
With dedicated teams in Fredericia and DTU Science Park in Lyngby, structured datasets and reporting frameworks are established to ensure full traceability from feedstock to end use. This provides biomethane producers, feedstock suppliers and gas traders with a reliable foundation for certification and market access.
Services cover the full preparation process, including mass balance configuration, lifecycle GHG calculations, documentation of feedstock and energy flows, and integration with the EU database for renewable fuels and gases.
The result is transparent documentation, stronger compliance and a data foundation that not only meets certification requirements but supports long-term business value.
Certification Data & Engineering Expertise
Sustainability Documentation & Carbon Accounting
Engineering: Make your renewable energy use measurable, verifiable and audit-ready.
Fremsyn helps companies document carbon reductions and energy performance through carbon accounting, Scope 1–3 emissions reporting, EPD data preparation and lifecycle CO₂ analysis.
With strong expertise in certification frameworks such as ISCC and RedCert, we create transparent documentation structures that support ESG reporting, compliance and credible decarbonisation claims.