Assuming they can produce jet fuel, I doubt it would be anywhere close to enough to replace the current fossil fuel. I've looked before and it is hard to get a

Assuming they can produce jet fuel, I doubt it would be anywhere close to enough to replace the current fossil fuel. I've looked before and it is hard to get a decent figure due to military/private/commercial passenger flights, non-passenger military flights, freight flights etc but >Collectively, United States air carriers burn through 17 billion gallons of jet fuel annually https://thepointsguy.com/guide/cost-of-fueling-an-airliner/ https://thepointsguy.com/guide/cost-of-fueling-an-airliner/ I think that figure is only commercial passenger flights.