Carbon Dioxide Removal Series: Enhanced Weathering (ERW) and Mineralization | Market Compass | 2025

asoni93
Nov 23
2 min read

Updated: 5d

Current Landscape

Enhanced Rock Weathering (ERW) and Mineralization have recently carved a niche for themselves in the engineered carbon removal (CDR) space, with notable co-benefits for soil health and crop productivity. The sector is developing science and processes and has seen the filing of 12 patents of which 2 have been granted.

Investments in Enhanced Weathering (ERW) and Mineralization

The sector has garnered attention from institutional investors and corporate players, signaling growing confidence in the scalability and long-term potential of these technologies. Total funding raised by ERW developers stands at USD 231.5 million, of which USD 176.5 million come from equity investments and the remining from grants.

Notable equity investments include USD 69 million raised by Neustark and USD 58.2 million by Terradot. A key milestone in the space is the awarding of two major grants by XPRIZE Carbon Removal—USD 50 million to Mati Carbon (grand prize winner) and $5 million to UNDO(third runner-up)—underscoring the sector’s growing strategic and scientific relevance.

Offtake Agreements

As of June 2025, total offtake volumes reached 740,822 tonnes, with 2024 marking a significant surge—380,285 tonnes contracted across 20 deals. Collectively, Frontier (331,231 tons), Google (200,000 tons), and Microsoft lead the race.

cCarbon Viewpoint

Although Enhanced Weathering (ERW) and Mineralization are still awaiting their first large-scale credit issuance under major registries, the current surge in capital deployment and offtake deals suggests more projects coming online in the coming months. Studying the issuances over the coming year will provide an indication of the cost of ERW credits, that cCarbon presently estimates in the USD 200–500 per tonne range, with the potential to decline to below USD 250 per tonne by 2030 as the market scales.

Looking ahead, the trajectory of ERW will depend on continued scientific validation, streamlined material supply chains, effective farmer engagement strategies, and the establishment of robust policy and verification frameworks.

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Table of Contents

State of the Sector …………………………………………………….. 4

Defining Enhanced Rock Weathering (ERW) and Mineralization …. 4

Current State …………………………………………………………….. 4

Investment Landscape …………………………………………………. 5

Offtake Deals ………………………………………………………………. 6

Patents …………………………………………………………………………. 8

Illustrative Key Players ………………………………………………… 9

Mati Carbon ………………………………………………………………… 9

Terradot ………………………………………………………………………. 9

Lithos Carbon ………………………………………………………………. 9