Carbon capture and storage. It’s a controversial tool in the energy transition that we don’t want to use, but probably have to. Most of the scenarios in the IPCC’s Sixth Assessment Report include capturing and storing hundreds of gigatons of carbon dioxide between now and 2100.

When people say carbon capture and storage, or CCS, they often mean different things. It’s a term that covers multiple technologies used to capture CO2—such as point-source and direct-air capture— and different approaches to using that CO2.

With the CCS industry is in its infancy, tackling some big questions now could save us headaches down the road. Questions about CCS infrastructure use, where we’ll build it, and who will control it.

In this episode, Shayle talks to Dr. Emily Grubert, associate professor of sustainable energy policy at the University of Notre Dame. She posted a Twitter thread recently about how the same CCS infrastructure actually has four different use cases:

Avoiding emissions to extend the life of fossil-fuel infrastructure
Avoiding emissions where we don’t have zero-carbon alternatives yet, like cement production
Removing carbon to compensate for other emissions, i.e. offsets
Removing carbon to draw down legacy emissions and avoid overshooting 1.5 degrees Celsius targets

They walk through each categories and cover topics like:

Which categories to prioritize over others
Avoiding the double-counting problem
Where we should use CCS vs. zero-carbon alternatives
The resource constraints on CCS, including water, land and energy
Whether we have the luxury to prioritize when we need to deploy CCS so quickly
Whether CCS customers or regulatory bodies should determine the type of CCS infrastructure we have and where we build it

Recommended Resources:

Catalyst: Carbon capture and storage is making a comeback
Bloomberg: Big Money Rushes Into Carbon Capture. Can It Deliver This Time?
US DOE: Strategic Vision: The Role of FECM in Achieving Net-Zero Greenhouse Gas Emissions

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