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A comment on Launch HN: Heimdal (YC S21) – Carbon neutral cement. Parent comment

Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by go_elmo on Monday August 02, 2021 @11:38AM (#28038064)
How "flexible" is the production? I mean during peak-sunny hours the price of electricity is well below that mark in some regions of europe? And would it e.g. make sense to scale up in a very sunny region & produce your own power? Last question: Do you need electrical power or heat? If latter, would a more efficient thermo-solar power plant make sense? Best of Luck! :)
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Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by f6v on Monday August 02, 2021 @01:13PM (#28039519)
> And would it e.g. make sense to scale up in a very sunny region & produce your own power?

It’s an interesting point. The most sunny region might be not the target market. Then you need to factor in the CO2 emissions arising from the transport to consumers.

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Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by hinkley on Wednesday August 04, 2021 @01:36PM (#28063859)
Cement has the advantage of being a small fraction of the weight and volume of the finished product. You source your water, sand and gravel closer to the work site but ship in your cement, I think you’re still in pretty good shape from an overall footprint standpoint.

Of course they are now electrolytically strip mining the entire ocean floor…

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Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by go_elmo on Monday August 02, 2021 @04:04PM (#28041910)
True and interesting point - but if you're able to produce as cheaply to "push out" dirty competitors and still have a net saving when including transport, it would still make sense I suppose. Also, there are always relatively close sun intensive regions near major customers: mongolia / tibet china, north africa europe & middle east, the US has its own deserts...

also, transport is a minor fraction compared to the net saving

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Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by marcuslima on Monday August 02, 2021 @06:48PM (#28043677)
Absolutely, CO2 emissions from transport isn't much of an issue compared with the saving. Hopefully someone like Remora will crack that problem anyhow. We'll most likely need to build our plants closer to where the market is though, to limit the financial cost of transportation
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Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by Jolter on Monday August 02, 2021 @04:44PM (#28042373)
This kind of scale would require establishing factories all over the world. Every feasible region in every developed country.
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Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by marcuslima on Monday August 02, 2021 @06:43PM (#28043627)
Yep! It'll be quite a journey to get there
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Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by marcuslima on Monday August 02, 2021 @06:45PM (#28043651)
Thanks! ABsolutely, looking at optimizing time of day we operate will be important. As grids become more dominated by renewables a solution like ours will be able to help stabilize acting as a electricity sink when the wind is blowing too hard or the sun too strong, taking advantage of lower power prices at these times
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