We make it possible for renewable flue gases to be converted into carbon-neutral fuels
Energy Circularity
We convert the gases resulting from combustion processes into sustainable and circular fuels
Synthetic fuels and biofuels (e-fuels and biofuels) are presented as strategic solutions for decarbonizing sectors where electrification is not yet viable, such as aviation, maritime transport, or heavy road transport.
Their value lies in the fact that their energy power comes from a renewable cycle. To make this possible, it is key to capture and purify the biogenic $\text{CO}_2$ generated in the combustion of biomass. Thus, a gas that was already in atmospheric circulation becomes a raw material for the production of sustainable fuels, avoiding the addition of new fossil emissions.
At ENSO, we integrate advanced carbon capture and valorization solutions that allow us to obtain this biogenic $\text{CO}_2$ under real industrial operation conditions. With this, we lay the foundation for the energy industry to have a clean, traceable, and available input to be transformed into new circular fuels.
FUEL GENERATION PROCESSES
Synthesis of
e-fuels
(Synthetic
Fuels)
In the e-fuels synthesis process, biogenic $\text{CO}_2$ acts as a fundamental carbon source for the production of liquid and gaseous hydrocarbons. After being captured and purified, it is combined with green hydrogen obtained through water electrolysis with renewable energy, leading to chemical reactions such as methanol synthesis or Fischer-Tropsch, which allow for the generation of synthetic fuels with high energy density.
Production of
Biofuels
(Biocombustibles)
In the production of biofuels, biogenic CO₂ plays an essential role both as a process sustainability indicator and as a raw material for advanced valorization routes. Based on agricultural waste, forest residues, or industrial byproducts, biomass is transformed through fermentation, transesterification, gasification, or pyrolysis processes, generating liquid and gaseous biofuels such as bioethanol, biodiesel, or biogas.
Renewable fuels gain their climate advantage because the carbon they contain does not come from fossils, but from biogenic carbon cycles. In the case of biofuels, the biomass used already absorbed atmospheric $\text{CO}_2$ during its growth phase, and its combustion returns that same carbon to the air, without adding extra emissions of fossil origin.
In e-fuels, the use of captured biogenic $\text{CO}_2$ prevents that gas from being emitted freely and reincorporates it into the synthesis of liquid fuels.
In both cases, the result is a renewable fuel with climate circularity potential, reducing the carbon footprint by 70–90% compared to conventional diesel or kerosene, depending on the process.
Compatibility with Existing Infrastructure
Biogenic CO2, combined with green hydrogen or with biomass refining processes, allows for the generation of drop-in molecules: synthetic gasolines, renewable diesel, and even SAF (sustainable aviation fuel). These molecules are chemically equivalent to their fossil counterparts, which means that they can be used directly in internal combustion engines, aviation turbines, maritime transport, and the current distribution network.
From a technical and economic point of view, this accelerates decarbonization, as it avoids immediate massive investments in fleet or infrastructure reconversion, especially in sectors difficult to electrify, such as aviation and heavy transport.
Leveraging biogenic CO₂ to produce renewable fuels converts a residual carbon flow into a strategic resource. Instead of releasing emissions from unavoidable processes, it is captured and transformed into usable energy.
This approach generates more resilient and decentralized energy systems, as the raw material can be obtained in multiple regions, at different scales, and does not depend on global oil chains. Thus, renewable fuels from biogenic CO₂ contribute to both energy independence and the reduction of geopolitical risks linked to fossil fuels.
Boost to the Circular Economy and Rural Development
The use of biogenic CO2 as an input for biofuels and e-fuels creates a circular productive ecosystem: agricultural, forestry, or industrial residues feed capture and conversion processes, and that carbon returns to society in the form of high-value renewable fuels.
This integration promotes new economic opportunities in rural environments (biomass production, waste logistics, biorefinery operation), while fostering technological innovation in industrial and energy sectors.
From a just transition perspective, renewable fuels not only reduce emissions but also generate local jobs and new value chains, linking sustainability and territorial development.
BENEFITS OF RENEWABLE FUELS
