Storing Pressurized CO₂ via Direct Battery Capture (DBC)

Gigaton CO₂’s Direct Battery Capture technology is not yet ready for deployment, but once developed, it could become a powerful system for renewable energy storage.

Our future targets for the system include:

• 60% round-trip efficiency: delivering energy performance comparable to other grid scale storage technologies.
• Low capital costs: by repurposing existing pipelines and reservoirs as they become available due to fossil fuel reduction strategies, extending their useful life.
• A cableless energy grid: allowing energy to be moved across regions without new transmission lines an enabling energy access at any point in the network.
• Curtailment Buffering: provides an energy storage medium for renewables, storing surplus power during curtailment or low demand periods.

Captured CO₂ is stored as a pressurised liquid in pipelines, salt caverns, and geological reservoirs, potentially leveraging over 1 million kilometres of existing infrastructure. During peak demand, the CO₂ is released and expands as it transitions from liquid to gas, driving electricity turbines and delivering instant power.

The system is re-charged by renewable energy and designed for geographical flexibility, enabling a "cableless" energy network where power can be accessed wherever infrastructure exists.

This system also provides a buffer for renewable energy sources, storing surplus electricity generated during curtailment or low-demand periods for later use across the network.