CO2 emissions trading is greenwash. CO2 capture not necessarily so. It could be a useful tool, so long as it's not used as an excuse to launder other emissions.
CO2 emissions trade for about 50$/t. CO2 capture costs 500$/t. So, both are useless - it costs 10 times more to get the carbon out, why are we selling them so cheap, it costs 10 times more to get the carbon out compared to not emitting it, it will never be economical.
A while ago (years ago?) I read something about how carbon capture is so energy intensive that it doesn’t really help much. Is that still true?
I guess if you powered it with green energy, that’d be a net positive?
Carbon offsets are greenwash. Emissions trading mostly works, because it's just about the government setting a quota and then letting people figure out who gets to use it.