Carbon Storage Permanence

Carbon storage permanence is the requirement that captured CO2 stay out of the atmosphere for a climate-relevant duration. The high cost of vacuuming carbon from the sky adds the concept through [[HeirloomCarbonTechnologies|Heirloom Carbon Technologies]], where captured CO2 from Limestone Loop Carbon Capture is described as being permanently stored in concrete or underground.

The concept matters because Direct Air Capture is not complete at capture. A carbon-removal claim depends on what happens after CO2 separation: storage location, leakage risk, monitoring, accounting, and whether the claimed removal offsets new emissions or supplements actual reductions.

Key Claims

• Capture and permanent storage are separate requirements in a credible Carbon Removal pathway.
• Concrete use and underground storage can both be presented as durable sinks, but the source does not deeply evaluate lifecycle accounting or verification.
• Permanence concerns interact with Carbon Removal Moral Hazard because weak storage claims could make continued emissions look cleaner than they are.
• Scaling storage capacity is part of the same commercialization problem as scaling capture equipment.

Connections

• [[HeirloomCarbonTechnologies|Heirloom Carbon Technologies]], Direct Air Capture, and Limestone Loop Carbon Capture - source technology context.
• Carbon Removal, Carbon Removal Cost Curve, and Climate Startup Commercialization Gap - economics and deployment frame.
• Concrete-Filled Wall Systems and Sustainable Construction Carbon Tradeoff - adjacent wiki branch where concrete’s climate cost and material role already appear.
• Carbon Removal Moral Hazard - legitimacy concern around claimed climate benefit.