Fascinating little tidbit: the EPA estimated the implementation cost of the Clean Air Act from 1970 to 1990 as costing about $523 billion 1990 dollars. That's about 1% of US GDP over the same period.
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The reason this is interesting: looking at the NAS's recent report on negative carbon emission technologies, many cost less than $20 per tonne of CO2 removed. The US produces ~5 Gt of CO2/yr. If the $20 was scalable, that would be well under 1% of GDP. ( https://www.nap.edu/catalog/25259/negative-emissions-technologies-and-reliable-sequestration-a-research-agenda … )
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Of course "If scalable" is bearing a huge load in that tweet!
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Does that mean that in jurisdictions with a >$20 per tonne price on CO2, it would be a profitable business to sequester CO2?
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Not necessarily. Different solutions will be better and worse adapted to different regions.
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Now the trick question: what's the impact on the temperature? Do the maths based on IPCC data and you get something near zero.
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Any idea of how this would be impacted by Wright’s law if put into effect? Is it possible that NETs could be made even cheaper given large scale subsidies?
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