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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Most of the <~$20/tCO2 solutions have limited capacity (land constraints etc.). DAC is the major exception, which costs ~$100/tCO2 and has ~unlimited capacity and is instead limited by capex and energy costs, both of which will come down over time.https://twitter.com/scottleibrand/status/1095478861880389633?s=21 …
Thanks. I don't have a good handle yet on scalability - there seem to be a lot of potential options, many are in their early days, and (ofc) most won't pan out. Ofc, most don't need to.
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This 350-page free PDF does an excellent job of covering everything in way more detail than I’ve seen anywhere else. I’ve only read the DAC section so far, and it’s very good. Looking forward to the others. Thanks for sharing it.
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The key insight that most people seem to be missing is that $100/tCO2 DAC puts an upper bound of about $1/gallon of gasoline/kerosene/diesel on what it’ll cost to fully decarbonize and get to net zero CO2 emissions, even w/o new tech for aviation, steel, cement, agriculture, etc.
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Evolution.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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