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Prometheus Fuels (YC W19) Closes Series B with $1.5B Valuation

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Re: Prometheus Fuels (YC W19) Closes Series B with $1.5B Valuation

#72
Serious question for all atmospheric carbon capture companies:

What happens once you're super successful and atmospheric carbon densities are dramatically lower? Is there a point at which the density is too low for the economics to work?

Would be an awesome problem to have.

Re: Prometheus Fuels (YC W19) Closes Series B with $1.5B Valuation

#75
I really enjoyed Prometheus's launch discussion here on HN. I've followed them on a regular basis because I believe in their vision and mission largely because of Rob's responses here on HN. I'm glad to see they've got funding for the next steps to start scaling.

Re: Prometheus Fuels (YC W19) Closes Series B with $1.5B Valuation

#76
post #48

Earlier quoted context omitted.

I myself don't like much how my brain sees Musk everywhere, yet I think similar methanol production will first come from SpaceX for Mars. Also i wonder whether moonshine style distillation is worse than the carbon nanotubes membrane filtration, especially if you have a source of cheap waste heat.

I've often wondered if I could justify a crypto mining rig if I used the waste heat for something, literally anything, useful. The tech is interesting and I want to for the sake of "doing something cool" but the environmental cost has me iffy on ever trying.

Heat your house?

https://www.newscientist.com/article/mg22530072-800-the-comp...

Re: Prometheus Fuels (YC W19) Closes Series B with $1.5B Valuation

#78
post #16

They seem to be heavy on vision, marketing and zero-net-carbon partnerships with huge brands, light on technical detail (i wouldn't hate some links to papers or a PoC of their reactor or something), all of which feels a little Nikola-y. Thin articles touching on the technology: https://prometheusfuels.com/on-the-road/meet-our-v3-faraday-... https://prometheusfuels.com/on-the-road/worlds-1st-machine-t... Hopefully som…

And how a physical good/energy company that is worth $1.5B only has 20 employees...

non equity baring contractors. is my guess, at least.

Re: Prometheus Fuels (YC W19) Closes Series B with $1.5B Valuation

#79

Serious question for all atmospheric carbon capture companies: What happens once you're super successful and atmospheric carbon densities are dramatically lower? Is there a point at which the density is too low for the economics to work? Would be an awesome problem to have.

we burn the generated fuel and cycle the carbon again. The fuel essentially acts like a battery. You would have to use renewable energy to power the capture.

Re: Prometheus Fuels (YC W19) Closes Series B with $1.5B Valuation

#80

Serious question for all atmospheric carbon capture companies: What happens once you're super successful and atmospheric carbon densities are dramatically lower? Is there a point at which the density is too low for the economics to work? Would be an awesome problem to have.

we burn the generated fuel and cycle the carbon again. The fuel essentially acts like a battery. You would have to use renewable energy to power the capture.

Duh! Obviously (headdesk :-)

I guess I was thinking more of CCS, but for fuel it makes total sense.

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