Overview
Anvil Capture Systems accelerates natural CO2 mineralisation by reacting atmospheric CO2 with reactive alkaline minerals in a proprietary low-energy reactor and feedstock system, turning CO2 into solid carbonate minerals stored on-site for permanent sequestration. Its approach combines enhanced rock weathering with on-site storage and a credit-based model, selling carbon removal credits backed by agreements with Frontier and buyers like Stripe, Shopify, and Alphabet. One method uses spreading basalt on tea plantations to speed up the reaction, forming bicarbonate and eventually solid carbonates. The company's goal is to deliver verifiable, durable CO2 removal credits at scale by accelerating mineral carbonation.
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Simplify's take
What believers are saying
- Anvil closed a $5.5 million seed in April 2026, extending runway.
- MassCEC awarded Anvil $200,000 in August 2026, signaling Massachusetts support.
- Greentown Labs listed Anvil as active in August 2026, and hiring continued into 2026.
What critics are saying
- Anvil has sold only 357 tons, leaving revenue unproven against real-world scale economics.
- A reactor failure, permitting delay, or weak ore economics kills the business before commercialization.
- If New Idria or similar deposits disappoint, Anvil loses its cheapest path to gigaton scale.
What makes Anvil Capture Systems unique
- Anvil mineralizes CO2 on-site, avoiding transport and permanent storage infrastructure.
- Frontier backed Anvil in September 2024 for 357 tons, validating its credit model.
- Corey Myers said in January 2026 LLNL partnered on New Idria feedstock development.
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