Supercritical CO2 is genuinely useful in small, controlled industrial settings, but massive claims about using it for climate-scale carbon pipelines or broad new power markets create serious safety, economic, and greenwashing risks. Where Supercritical CO2 Works WellSmall industrial uses: Great as a solvent for decaffeinating coffee, dry cleaning, and extracting plant compounds safely.

Supercritical CO2 is genuinely useful in small, controlled industrial settings, but massive claims about using it for climate-scale carbon pipelines or broad new power markets create serious safety, economic, and greenwashing risks. 
Where Supercritical CO2 Works Well
Small industrial uses: Great as a solvent for decaffeinating coffee, dry cleaning, and extracting plant compounds safely.
Controlled systems: -
Works efficiently in closed-loop heat pumps and specific waste heat recovery setups because it is non-toxic and non-flammable.
Localized benefits: -
Operates safely when kept inside small, monitored factory boundaries rather than long-distance transit networks.
Where the System Claims Fail
88
Promoted by the oil and gas industry to squeeze small efficiency gains out of burning fossil fuels instead of switching to wind and solar. 
Massive infrastructure costs: -
Scaling up a network for wide carbon management would require millions of kilometers of new pipelines costing trillions of dollars. 
Severe safety hazards: -
Transporting pressurized CO2 across populated regions creates catastrophic pipeline failure and asphyxiation risks. 

MJF Lion ER YK Sharma 

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