What's Your Problem? Carbon Capture at Rock-Bottom Prices
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Sep 11, 2025 
Shashank Samala, the CEO and co-founder of Heirloom, discusses innovative carbon capture solutions using crushed limestone. He shares how his childhood in India shaped his passion for tackling climate change. The conversation dives into the cost-effective methods of capturing atmospheric CO2 and the role of government policies in supporting this industry. Shashank also highlights a groundbreaking project aimed at capturing one million tons of carbon annually, drawing parallels with the solar industry's evolution.
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Inside The Tracy Pilot Plant
- The Tracy pilot looks like tall stacks of trays filled with white crumbled powder that 'grows' as it absorbs CO2.
- He describes moving material from trays to an electric kiln to release pure CO2 and recycle the lime back to capture more.
Release Energy Is The Cost Bottleneck
- Releasing CO2 requires high temperatures and is the biggest energy cost, but industrial heat-recovery techniques can lower that burden.
- Targeting about 2 MWh per ton is feasible with cement-industry heat-recovery best practices.
Design For Emulation And Scale
- Build a repeatable blueprint that other teams can copy so deployment scales like solar did after cost fell.
- Use abundant materials and standard industrial practices to enable mass replication.