Fossil‑free bio‑LNG
The right pathway to net‑zero

Bio-LNG is sometimes also referred to as liquefied biomethane (LBM) or liquefied biogas (LBG), as if these were the same product. But is that actually correct?

Fossil LNG, whether “greened” or not, typically consists of about 90% methane, along with other hydrocarbons. Bio-LNG that is produced by onsite liquefaction of biogas, however, consists of approximately 99% biomethane. The term liquefied biomethane (LBM) therefore more accurately reflects both the product and its production process.

Nevertheless, since this liquid biomethane is a renewable fuel used in LNG engines to replace fossil LNG, the term bio-LNG remains the most commonly used name.

Bio-LNG is considered carbon neutral because it is produced from organic waste materials that are already part of the short carbon cycle. When this waste decomposes naturally, it emits methane and CO₂ into the atmosphere. By capturing the biogas from this waste and upgrading it into bio-LNG, these emissions are prevented and put to productive use.

The CO₂ released during combustion is biogenic – it simply returns to the atmosphere as part of the natural cycle, rather than adding new fossil carbon. When combined with carbon capture and the use of manure or other high-impact feedstocks, fossil-free ready bio-LNG can even deliver net negative emissions, making it one of the most effective tools for decarbonizing transport today.

Fossil-free ready bio-LNG aligns perfectly with EU renewable energy directives, which increasingly focus on full lifecycle emissions and energy independence. The EU Innovation Fund has recognized and funded projects using on-site biogas liquefaction, demonstrating its alignment with European climate goals. Our bio-LNG helps meet targets in the Renewable Energy Directive (RED III) for the transport sector and contributes to the RePowerEU targets for biomethane production.

Fossil-free ready bio-LNG can reduce greenhouse gas emissions by up to 100% compared to diesel. When produced from certain feedstocks, like manure, and with carbon capture, it can even achieve negative emissions. Our closed-loop system with integrated CO₂ capture further enhances these benefits by ensuring no methane escapes and by displacing fossil CO₂ in industrial applications. This is why bio-LNG is recognized as one of the most effective solutions for decarbonizing long-haul, heavy-duty transport today.

Our bio-LNG production process operates as a fully integrated, closed-loop system where all gases are recovered and recycled. Any residual methane in the CO₂ stream is captured and fed back into the process rather than vented. Unlike other processes that may release unburned methane during CO₂ venting, our plant design features a closed system with zero methane slip. This approach not only maximizes resource efficiency but also prevents the release of methane, a potent greenhouse gas with 28 times the warming potential of CO₂, resulting in a significantly lower carbon intensity for the production process.

Onsite liquefaction reduces dependence on imported fossil fuels by producing fossil-free ready bio-LNG directly from local organic waste, without the need for fossil molecules in the production process. This approach enhances energy security, reduces geopolitical risks, and keeps value within local economies. The need for local production becomes increasingly important as we transition away from fossil dependence.

Initially, fossil-free ready bio-LNG through onsite liquefaction requires higher capital investment for on-site liquefaction units. However, this approach eliminates costs associated with grid injection, avoids hidden infrastructure costs, and maximizes resource efficiency. When considering total lifecycle costs and fair carbon pricing, fossil-free ready bio-LNG becomes increasingly competitive.

Our technology continuously evolves to improve efficiency and reduce costs, making this sustainable option more accessible to biogas producers worldwide.

Most biogas producers with sufficient scale can adopt fossil-free ready bio-LNG production through onsite liquefaction. Nordsol’s technology is designed for efficient and economical biogas liquefaction. The technology can be integrated with existing biogas plants and requires no gas grid connection, making it widely applicable. Our team provides comprehensive support throughout the process, from initial business case development to plant operation.

Yes, fossil-free ready bio-LNG is a 100% drop-in fuel, similar in composition to conventional LNG. It can be used in all LNG-equipped vehicles and vessels without modifications. It can also be blended with fossil LNG in any ratio, making the transition flexible and practical for fleet operators. This compatibility makes it an immediately deployable solution for decarbonizing heavy transport, offering a clear pathway to sustainability without waiting for new infrastructure or vehicle replacements.