Technology advances in liquid biofuels and renewable gas – WS28 Summary Report

Feb 2023

IEA Bioenergy held its biannual workshop on 17 October 2022 in Vienna, in conjunction with its Executive Committee meeting (ExCo90). The workshop on ‘Technology advances in liquid biofuels and renewable gas’ was held in hybrid form and was organised in collaboration with the Austrian Ministry BMK and BEST.

After an introduction session, the workshop consisted of three parts:

  1. advances in renewable gas / biomethane, concluded with a panel discussion
  2. advances in liquid biofuels, concluded with a panel discussion
  3. related developments in Austria.


Summary report: ExCo90 Workshop – Summary Report

Workshop webpage: WS28: Technology advances in liquid biofuels and renewable gas


Key conclusions:

Both climate change and energy security are major reasons to urgently move away from fossil fuels such as oil and gas. This requires a combination of energy conservation, energy efficiency, electrification and shifting applications to renewable fuels – there is no silver bullet.

Renewable liquid transport fuels will need to have an increasing role in the transport system and the role of renewable gases will need to increase in the gas distribution system. In both cases bioenergy plays a vital role. The current push on biomethane at (European) policy level also helps further developments.


Renewable gas:

Biomethane can be used without changing (natural) gas transmission/distribution infrastructure or end user equipment, so it provides a renewable solution that is immediately applicable.

Biogas sectors are starting to focus more on upgrading to biomethane which can be fed into the gas grid or used decentral as natural gas substitute. The upgrading also facilitates capture and use of biogenic CO2 from the biogas.

Gasification pathways are also promising to deliver biomethane (SNG) which can be fed into the grid to replace fossil gas. Technologies have been proven and are ready to take the next step to commercial scale projects.

Accelerating the deployment of renewable gas requires solid planning and strategies, a stable and supportive policy framework, the removal of unnecessary barrierseasy market access, the possibility to trade products cross border, the unlocking of sustainable feedstocks and the recognition of the multifunctionality of biogas/biomethane systems.

Discussion panel renewable gas


Advanced liquid biofuels:

Thermochemical and biochemical routes to produce advanced liquid biofuels are entering the market, with new projects coming online and further deployment expected in the coming years. While most current projects and technologies still focus on road biofuels, developments increasingly focus on sustainable aviation fuels.

Policy development is essential for the deployment of biofuels. Financing is the most critical factor, and the largest risk for investors is the political risk of changing policies, considering that investments need to have a 15-to-20-year time perspective.

Discussion panel advanced biofuels


Different industries that process biomass are turning into biorefineries, creating a variety of products, together contributing to the overall business case, and avoiding wastes in the process. Biofuels/bioenergy are an inherent part of these systems. Circularity of carbon and nutrients is a common goal in all these projects.

Biorefining to multiple products is a central principle in all biobased developments.

Green brewery in Göss, Austria