Decrement carbon: Stripe's negative emissions commitment

Re:Decrement carbon: Stripe's negative emissions commitment by semi-extrinsic on Friday August 16, 2019 @07:21AM (#20714023)

Aha, so it's targeting "CCU". Then OK, I can maybe see there is a point initially, but not at anything near the scale we need.

Global graphite production from mining is at 1 megatonne/year, while synthetic is a few hundred kilotonnes/year. We need CCS to operate at tens of gigatonnes per year, that's four orders of magnitude beyond all the graphite the world needs.

This is the problem with anything CCU - there just aren't viable options with consumption at the gigatonne scale.

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Re:Decrement carbon: Stripe's negative emissions commitment by azernik on Friday August 16, 2019 @07:41AM (#20714131)

I'd imagine extra graphite is pretty easy to store, though?

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Re:Decrement carbon: Stripe's negative emissions commitment by semi-extrinsic on Friday August 16, 2019 @04:00PM (#20719122)

At the gigatonne scale, nothing is easy to store. Fill the entire Hoover dam with graphite, and you've stored 6 gigatonnes. We need to store tens of gigatonnes per year for a hundred years.

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Re:Decrement carbon: Stripe's negative emissions commitment by ed312 on Friday August 16, 2019 @09:32AM (#20714948)

We could put it down in empty mine shafts... or build entire mountain tops out of it!

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