Through river alkalinity enhancement (RAE), site-specific amounts of safe alkalinity material is added to rivers where it dissolves rapidly, converting the CO2 in the rivers into stable, beneficial bicarbonate as well as minerals like calcium and magnesium. Our process absorbs CO₂ from both the soil and atmosphere and re-establishes key ecological building blocks. The rivers naturally transport the bicarbonate to the ocean, and the permanence of the CDR is currently estimated to be in the 10,000s of years. The drawdown of carbon can be directly measured in the river in real time.
Isometric maintains a buffer pool of Certificates for CarbonRun, to help protect against uncertainty in storage, and the possibility of reversals.Learn more about buffer pools
CarbonRun buffer pool
Available buffer pool1.534
Total allocated to date1.534
Used for reversals
0
Contributing projects1
Buffer pool refunds
This supplier has received refunds from their buffer pool after a risk of reversal rating on one of their projects was revised downward, or the buffer pool contribution rate for the relevant risk category was reduced.Learn more about buffer pool refunds
Moser River
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CarbonRun will implement River Alkalinity Enhancement (RAE) on the Moser River, Nova Scotia, starting Fall 2025. This involves adding finely crushed natural alkaline rock to the river, which reacts with CO₂ to form stable bicarbonate, increasing the river's dissolved inorganic carbon (DIC) transport capacity. Once transported to the ocean, this bicarbonate is stored for over 1,000 years. The project aims to permanently sequester carbon and improve water quality to support healthier ecosystems.
