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Did I correctly understand the idea if I summarise the product as similar to Climeworks, capturing atmospheric CO2 (indirectly through the ocean, same thing in

by Aachen 5y ago

Did I correctly understand the idea if I summarise the product as similar to Climeworks, capturing atmospheric CO2 (indirectly through the ocean, same thing in the end), but with the difference that you can sell the resulting product as cement ingredients (plus some byproducts) rather than it being just stored away like Climeworks does? If this is (roughly) correct, what price point per ton of removed CO2 are you at today, assuming the cement ingredients can be sold at an optimistic price point? I'm currently with Climeworks but it's prohibitively expensive to remove all unavoidable emissions that I cause by living a normal life today, so my subscription doesn't cover all emissions yet and I would love to. Finally, I don't see a way to buy anything on your site, or even a waiting list. Is there some call to action, like if I were a cement producer could I buy your product today? Any plans to offer CO2 removal to consumers? Or anything else people or businesses can buy at the moment?

marcuslima 5y ago
Yeah, that's the core of it. Climeworks absorbs CO2 on their amine solid sorbent surface before releasing it by heating up the sorbent to prepare it for a new round of CO2. That CO2 then needs to be stored somewhere. I'm not familiar with the inner workings of Climeworks, but if I were there that would be what concerned me the most. I know they're testing a mineralization solutipn with Carbfix in Iceland that could be promising, but expensive. We're not at sufficient scale to offer credits to consumers. but this could be on the agenda in a few months. As for cost per tonne this depends a lot on the commercial arrangements we have in place. More meaningful is the energy consumption per tonne which is <4 MWh/ tonne. This will be reduced to 3MWh/tonne. Based on current commercial conversations we're expecting a CO2 price below $50/t for our first plant
- Aachen 5y ago
  $50/t sounds amazing! That would be a price point where I could offset 100% of unavoidable CO2e emissions quite easily. Too bad it won't initially be available for consumers, but I'm very much looking forward to seeing where this goes :)

by Aachen 5y ago

marcuslima 5y ago

Yeah, that's the core of it. Climeworks absorbs CO2 on their amine solid sorbent surface before releasing it by heating up the sorbent to prepare it for a new round of CO2. That CO2 then needs to be stored somewhere. I'm not familiar with the inner workings of Climeworks, but if I were there that would be what concerned me the most. I know they're testing a mineralization solutipn with Carbfix in Iceland that could be promising, but expensive. We're not at sufficient scale to offer credits to consumers. but this could be on the agenda in a few months. As for cost per tonne this depends a lot on the commercial arrangements we have in place. More meaningful is the energy consumption per tonne which is <4 MWh/ tonne. This will be reduced to 3MWh/tonne. Based on current commercial conversations we're expecting a CO2 price below $50/t for our first plant

Aachen 5y ago
$50/t sounds amazing! That would be a price point where I could offset 100% of unavoidable CO2e emissions quite easily. Too bad it won't initially be available for consumers, but I'm very much looking forward to seeing where this goes :)