The startup develops a decarbonization technology that utilizes accelerated weathering of limestone to capture carbon emissions from point sources. This process converts captured emissions into stable oceanic bicarbonate, effectively reducing atmospheric CO2 levels and promoting ocean health.
Funding
$3.5M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.


Founders
Product
Problem
The shipping industry faces increasing pressure to reduce its carbon footprint, but current carbon capture systems for marine vessels are often bulky, expensive, and require extensive port infrastructure for CO2 disposal. This creates a barrier to widespread adoption of carbon capture technology in the maritime sector.
Solution
Calcarea provides a compact and cost-effective carbon capture and storage (CCS) solution designed specifically for the shipping industry. Their technology utilizes accelerated weathering of limestone within a reactor to capture CO2 emissions directly from ship exhaust. The captured CO2 is then converted into stable oceanic bicarbonate, a benign and naturally occurring compound, which can be safely stored in the ocean. This on-board system eliminates the need for port-based CO2 handling and offers a more efficient and economical approach to decarbonizing maritime transport. Calcarea's solution helps reduce and remove carbon emissions by accelerating the Earth’s natural carbon cycle.
Target Audience
The primary target audience includes shipping companies and maritime operators seeking to reduce their carbon emissions and comply with increasingly stringent environmental regulations.
Features
- Reactor-based system for accelerated weathering of limestone
- On-board carbon capture and conversion to oceanic bicarbonate
- Compact design suitable for marine vessel integration
- Lower cost compared to existing carbon capture technologies
- Eliminates dependency on port infrastructure for CO2 handling
- Safe and permanent carbon storage in the form of stable oceanic bicarbonate