[sien]

There are a few companies doing it.

Prometheus Fuels is another, they have been on HN previously :

https://news.ycombinator.com/item?id=31264388

They have a cool website :

https://prometheusfuels.com/

There are some companies that want to use nuclear power , Valar Atomics is one :

https://www.valaratomics.com/

The cost estimates seem to be 4-10 times as expensive as fossil fuels.

[sn9]

> The cost estimates seem to be 4-10 times as expensive as fossil fuels.

Importantly, this cost is expected to decrease precipitously as the cost of solar energy declines exponentially and as the the conversion technology continues to improve through iteration and economies of scale.

[sien]

That's very true.

Also, over the next century the cost of fossil fuel extraction will increase and the price of synthetic and fossil fuels will get much closer at least.

If there was a tax reduction for carbon neutral fuels they could become cost competitive even more rapidly.

Kerosene for aviation and diesel for ships, trucks and mining are good candidates for synthetic fuels.