I thought the mention was more along the line of the fact that they have capacity to sequester it
What is carbon dioxide capture and sequestration?
What's the difference between carbon dioxide capture and sequestration (CCS) and geologic sequestration?
Geologic sequestration is one step in the CCS process. Unlike terrestrial, or biologic, sequestration, where carbon is stored via agricultural and forestry practices, geologic sequestration involves injecting carbon dioxide deep underground where it stays permanently.
Carbon dioxide (CO2) capture and sequestration (CCS) is a set of technologies that can greatly reduce CO2 emissions from new and existing coal- and gas-fired power plants and large industrial sources. CCS is a three-step process that includes:
Capture of CO2 from power plants or industrial processes
Transport of the captured and compressed CO2 (usually in pipelines).
Underground injection and geologic sequestration (also referred to as storage) of the CO2 into deep underground rock formations. These formations are often a mile or more beneath the surface and consist of porous rock that holds the CO2. Overlying these formations are impermeable, non-porous layers of rock that trap the CO2 and prevent it from migrating upwards