The EPA has issued its first Class VI underground injection permit in Kansas, granted to PureField Carbon. This expands the map of where permitted CO2 storage can happen in the United States, adding another state to a still-short list of locations with federal approval for dedicated geological sequestration.
Why it matters
Class VI permits are the regulatory gatekeepers for underground CO2 storage in the US. Without one, you can’t legally inject CO2 into deep geological formations for long-term sequestration. Every new permit issued, and every new state added to the permitted geography, matters because the entire CDR and carbon capture pipeline depends on having somewhere to put the CO2 once you’ve captured it. Storage permitting has been one of the biggest bottlenecks in the sector, and Kansas joining the roster of states with approved Class VI wells is a meaningful step.
The details
The permit was issued by the US Environmental Protection Agency to PureField Carbon. This is the first Class VI permit in Kansas, which means the state had no previously approved dedicated CO2 storage wells under this classification. Class VI wells are specifically designed for the injection of CO2 into deep underground formations. They are distinct from other injection well classes (like Class II wells used for oil and gas operations) because they carry stricter requirements around monitoring, reporting, well construction, and long-term stewardship. The EPA created the Class VI category in 2010 specifically to address the unique risks and requirements of CO2 geological sequestration. It’s worth noting that the EPA has been the primary permitting authority for Class VI wells in most states, though some states have applied for and received “primacy,” meaning they handle their own Class VI permitting. The fact that this Kansas permit came from the EPA indicates that Kansas has not taken over its own Class VI permitting authority.
Implications
Adding Kansas to the geographic footprint of permitted CCS storage is significant for a few reasons. First, geography matters for carbon capture economics. The closer a capture facility is to a permitted storage site, the less you spend on CO2 transport. Kansas sits in the middle of the country, surrounded by industrial and agricultural operations that produce CO2. Having permitted storage in the state could make capture projects in the region more financially viable by reducing pipeline distances. Second, every permit the EPA issues builds institutional knowledge and, ideally, speeds up the process for future applicants. The agency has faced criticism for the slow pace of Class VI permitting. Each completed review adds precedent and potentially streamlines the path for the next application in the queue. Third, for the CDR field specifically, geological storage is a critical piece of the puzzle. Whether CO2 comes from direct air capture, bioenergy with carbon capture and storage (BECCS), or industrial point-source capture, it needs to go somewhere permanent. More permitted storage sites mean more options for CDR project developers looking to pair their capture technology with verified, long-term sequestration. PureField Carbon now has the regulatory green light to move forward with injection operations at this site. The timeline from permit to actual injection will depend on well construction, infrastructure buildout, and securing CO2 supply.
Caveats
The source information on this story is limited, so there are several things we don’t know. We don’t have details on the specific geological formation being targeted, the expected storage capacity of the site, or the timeline PureField Carbon is working toward for first injection. We also don’t know whether the CO2 destined for this well will come from industrial capture, DAC, or some other source. It’s also important to be clear about what CCS storage permitting is and isn’t. A Class VI permit is necessary but not sufficient for a successful storage operation. The well still needs to be drilled, tested, and operated according to the permit conditions. Long-term monitoring obligations extend well beyond the injection period. And the standard caveat applies: carbon capture and storage, whether paired with industrial sources or CDR technologies, is meant to address residual emissions that can’t be eliminated through other means. It is not a substitute for reducing fossil fuel use. The existence of more storage capacity should not be read as a reason to slow down emissions reductions. It should be read as preparation for dealing with the emissions we genuinely cannot avoid. Finally, one permit in one state does not solve the storage bottleneck. The US will need many more Class VI permits across many more states if CCS and CDR are going to operate at the scale climate models suggest is necessary. But each one issued is a concrete, measurable step in that direction. Kansas is now on the board.
Source: Carbon Herald