Antoine Pietri
@seirl.bsky.social
Software engineer, Environmental economics nerd
The tool also shows synthetic e-fuels (solar + electrolysis + air-captured CO₂). Solar is 50x more land-efficient than photosynthesis, but it requires massive infrastructure and is extremely expensive (10-13x more than fossil jet fuel).
February 5, 2026 at 9:40 PM
The tool also shows synthetic e-fuels (solar + electrolysis + air-captured CO₂). Solar is 50x more land-efficient than photosynthesis, but it requires massive infrastructure and is extremely expensive (10-13x more than fossil jet fuel).
You can also check the footprint of your own ticket. A Business Class roundtrip from Paris to San Francisco using Soy-based fuel requires enough land to feed 18 people for a whole year.
February 5, 2026 at 9:40 PM
You can also check the footprint of your own ticket. A Business Class roundtrip from Paris to San Francisco using Soy-based fuel requires enough land to feed 18 people for a whole year.
The tool compares the land area needed to fuel everything from a single seat to the entire global fleet.
The total land required is huge: with conventional SAFs (corn/soy), you need a farm the size of India!
The total land required is huge: with conventional SAFs (corn/soy), you need a farm the size of India!
February 5, 2026 at 9:40 PM
The tool compares the land area needed to fuel everything from a single seat to the entire global fleet.
The total land required is huge: with conventional SAFs (corn/soy), you need a farm the size of India!
The total land required is huge: with conventional SAFs (corn/soy), you need a farm the size of India!
I built a calculator to visualize the physical constraints of decarbonizing aviation ✈️: seirl.github.io/safland/
We know batteries won't work. We need liquid fuel (SAFs) for long-haul flights. But how much land does growing that fuel actually take?
We know batteries won't work. We need liquid fuel (SAFs) for long-haul flights. But how much land does growing that fuel actually take?
February 5, 2026 at 9:40 PM
I built a calculator to visualize the physical constraints of decarbonizing aviation ✈️: seirl.github.io/safland/
We know batteries won't work. We need liquid fuel (SAFs) for long-haul flights. But how much land does growing that fuel actually take?
We know batteries won't work. We need liquid fuel (SAFs) for long-haul flights. But how much land does growing that fuel actually take?