U.S. Bank makes carbon removal debut with Minnesota landfill deal

illuminem summarises for you the essential news of the day, reviewed by our editorial team. Read the full piece on Axios Pro or enjoy below:

🗞️ Driving the news: U.S. Bank is buying its first carbon removal credits, from Carba's landfill project in Minnesota
• Carba, a Minneapolis startup that has raised $6 million in seed funding from Rusheen Capital Management, has deployed the first of four reactors on site and plans a Series A shortly
• The bank's head of sustainability, Ariel Meyerstein, cited biochar's status as a proven process and the project's Minnesota community ties

🔭 The context: The purchase follows Microsoft's pause on carbon removal buying earlier this year amid slowing demand, though Microsoft is already contracted for 44,000 tons from this same project
• Expensive approaches such as direct air capture have struggled to scale, pushing some removal companies toward power generation instead
• The project was the first to receive Isometric validation for biochar storage in low-oxygen environments.

🌍 Why it matters for the planet: The reactors convert wood chips from utility-line tree trimmings into biochar, burying it to extend permanence — Carba claims storage for a thousand years at under $100 per ton removed
• Molten salts as heat transfer fluid allow more carbon to be locked in than conventional biochar reactors while handling high temperatures more efficiently on site
• The significance is cost: durable removal near $100 per ton addresses the price barrier that has kept engineered carbon removal from reaching meaningful volume

⏭️ What's next: Three further reactors remain to be deployed. U.S. Bank declined to comment on future purchases, with Meyerstein describing this as a test balloon

💬 One quote: "This market is continuing, it's growing, it's maturing" — Andrew Jones, CEO of Carba.

📈 One stat: Under $100 per ton of carbon removed, with claimed permanence of a thousand years.

Subscribe to our free newsletters to never miss a beat in sustainability.

The world needs sustainability knowledge. At illuminem, no interest group or shareholder can influence our work. Thank you for supporting our mission to make high-quality and independent sustainability information free for all. Every contribution helps. Thank you for donating today