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Francesco Cherubini
IPCC, Norwegian University of Science and Technology
Sustainable Aviation Fuels (SAF)
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Francesco Cherubini
IPCC Lead Author
Professor & DirectorIndustrial Ecology Programme
Norwegian University of Science and Technology (NTNU), Trondheim – Norway
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1.5°C goal: CO2 emissions should decline by about 45% by 2030 and reach net zero around 2050
The Challenge ahead
IPCC SR1.5, SPM
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Bioenergy & Climate Change Mitigation
Figure SPM.4
Sustainability-focused
(SSP1 at 1.5°C)
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0Bioenergy
Impacts depend on the scale of deployment, initial land use, bioenergy feedstock, climatic region and management
regime (high confidence).
IPCC SRCCL, SPM
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0Bioenergy & The role of previous land use
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Bioenergy crops on previous forest land (deforestation): large CO2 emissionsfrom loss of vegetation and soil carbon, loss of many ecosystem services
Bioenergy crops on grassland: effects are case-specific(depend on climate, type of vegetation and bioenergy crop)
Bioenergy crops on cropland: typically increases soil carbonand improves many ecosystem services
Bioenergy from forestry: case-specific effects that change over time (benefits are usually larger in the longer term), location,
management practice, and accounting
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0Future socioeconomic pathways affect risks from large-scale bioenergy deployment
IPCC SRCCL, Chpater 7
Environmental damage
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Mid-term (≈40 y.) Long-term (≈100 y.)
Fossil jet fuelBiojet fuelsFossil jet fuelBiojet fuels
10 PJ/year(20% of jet fuel use) from forest residues in Norway
Fossil jet fuel Biojet fuel (FT) Biojet fuel (ATJ)
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Thank You