Frontier, a carbon removal initiative founded by Stripe, Alphabet, Shopify, Meta, McKinsey and others, has signed an offtake agreement with Canadian biowaste firm NULIFE GreenTech.
Under the terms of the deal, Frontier buyers will pay NULIFE $44.2 million to remove 122,000 tonnes of CO₂ between 2026 and 2030, with said CO₂ stored as a concentrated bio-oil in underground salt caverns.
This is Frontier’s third carbon removal offtake deal in Canada, bringing the company’s commitment in the country to more than $100 million.
Hydrothermal liquefaction
NULIFE addresses a longstanding biowaste issue faced by agricultural and industrial facilities, where leftover residues, whether from grease-trap waste, wastewater sludge or other sources, are left to decompose, emitting CO₂ and sometimes methane.
Using a process called hydrothermal liquefaction (HTL), NULIFE converts this biowaste into a transportable, storable product – a carbon-rich bio-oil that is suitable for long-term storage – as well as biochar. This is then injected 1,000 metres underground into licensed salt caverns, ensuring permanent carbon storage.
“Frontier’s decision to proceed with this offtake is a strong validation of the engineering rigour, transparency, and real-world waste-management value behind our BiCRS platform,” said Jerry Kristian, co‑founder, NULIFE. “Our modular HTL units enable rapid, repeatable deployment, supporting scalable growth across Canada and internationally.”
The technology is also expandable, with Frontier estimating that HTL technology could remove up to 1.5 gigatons of CO₂ annually by 2040.
‘Long-term carbon removal’
“NULIFE turns an everyday waste problem into measurable, long‑term carbon removal,” added Hannah Bebbington Valori, head of deployment, Frontier. “This is a good example of how smart waste disposal can double-up as a carbon removal solution that could deliver at gigaton scale.”
To date Frontier has facilitated purchases on behalf of founding members including Stripe, Google, Shopify, and McKinsey Sustainability, as well as members Autodesk, H&M Group, and Workday. In addition, Aledade, Canva, Match Group, Samsara, SKIMS, Skyscanner, Wise, and Zendesk have participated through Watershed’s partnership with Frontier. Read more here.
