The most expensive part of turning agricultural waste into carbon credits is often the waste itself. Transporting low-density biomass like coffee pulp or pruning wood from remote farms to a central processing plant can burn more diesel than the carbon you hope to sequester. Cotierra, a Zurich-based startup, is betting the whole unit economics of biochar hinge on moving the reactor to the farm, not the farm waste to the reactor.
Founded in 2023, the company builds modular, decentralized pyrolysis systems designed to sit near smallholder farms. The hardware converts local agricultural residues into biochar, a stable form of carbon that can be mixed into soil to improve fertility and lock away CO2 for centuries. A digital platform with IoT sensors tracks the process, generating the tamper-proof data needed to verify carbon removal for offset markets [Cotierra]. For an industry like coffee, where soil degradation is a pressing threat to yields and farmer livelihoods, the pitch is a two-for-one: waste management plus soil health, with a carbon revenue stream on top.
A hardware wedge into agricultural supply chains
Cotierra’s initial wedge is the global coffee value chain, a world of geographically dispersed small farms and long, complex supply chains. The company has deployed its reactor technology in Colombia, processing coffee residues directly on farms [Sesamers, September 2026]. The commercial hook is selling ‘insetting’ solutions to the large traders and roasters who want to decarbonize their supply chains and bolster resilience at the farm level, not just buy offsets from unrelated projects.
The traction narrative is built on partnerships. Cotierra reports collaborations with leading coffee companies including JDE Peet's, Louis Dreyfus Company (LDC), and Neumann Kaffee Gruppe (NKG) [Euronext, April 2026]. One source claims partnerships with three of the five largest global coffee traders, providing theoretical access to over two million farmers [Circulator, September 2026]. This asset-light approach to distribution,piggybacking on existing trader relationships,is arguably as critical to their model as the reactor design.
The team and the $3 million seed
The founding trio brings together climate strategy, product, and hardware engineering. CEO Thomas Käslin has a background in finance and previously co-founded a sustainability consultancy. CPO Lorenz Buser has product management experience at an IoT-sensor startup and field work with smallholder farmers in Latin America. CTO Marcel Rohner is a mechanical engineer who co-led a rapid-prototyping department at a Swiss manufacturing firm [PERPLEXITY SONAR PRO BRIEF].
In September 2026, Cotierra closed a $3 million seed round co-led by PINC (the venture arm of food giant Paulig) and Carbon Removal Partners, bringing total disclosed funding to approximately $4.75 million [tech.eu, September 2026]. The strategic link to Paulig, a major international coffee roaster, is a clear signal of the customer path they are pursuing.
| Co-Founder | Role | Key Background |
|---|---|---|
| Thomas Käslin | CEO | Finance, climate strategy, co-founded sustainability consultancy Azolla Swiss |
| Lorenz Buser | CPO | IoT product management, field experience with smallholder farmers in Latin America |
| Marcel Rohner | CTO | Mechanical engineering, rapid-prototyping leadership in Swiss manufacturing |
| Table: Cotierra's founding team [PERPLEXITY SONAR PRO BRIEF]. |
Signed revenue and the path to scale
Traction claims are where climate hardware stories often get fuzzy, but Cotierra’s are notably specific. The company states it has $5 million in signed revenues from carbon markets and coffee industry players, including Jacobs Coffee and Kaufland [Venture Kick]. This figure, while reported by the company and its supporters, suggests a pipeline of committed offtake agreements, not just pilot projects.
The $3 million in new capital is earmarked for industrializing the reactor technology and scaling commercial deployments, beginning in coffee with plans to expand into cocoa, cotton, and citrus [tech.eu, September 2026]. The model’s scalability rests on a repeatable, decentralized deployment playbook and the digital MRV (Measurement, Reporting, and Verification) system that makes each small unit viable for carbon finance.
The unit economics of decentralization
The core bet is that decentralized production wins on cost and carbon math. Centralized biochar plants face a ‘tyranny of distance’ with biomass. A back-of-the-envelope calculation illustrates the point: transporting one ton of coffee pulp 100 kilometers by truck could emit around 20 kg of CO2. If the pyrolysis process converts, say, 30% of that biomass into stable carbon, you’ve just spent a significant fraction of your sequestration gain on logistics. By processing on-site, Cotierra aims to cut that transport leg to near zero, preserving the carbon margin.
This puts them in direct competition with centralized biochar producers and other nature-based carbon removal pathways. Their incumbent to beat is the traditional biochar project developer that aggregates waste from many farms at a single, large facility. Cotierra’s answer is that their model is the only one that makes sense for the fragmented, smallholder-dominated agriculture that produces much of the world’s coffee, cocoa, and cotton.
Navigating a crowded carbon marketplace
No climate hardware journey is without potholes. The risks for Cotierra are substantial and familiar.
- Technology durability. Modular reactors operating in remote, tropical conditions must be exceptionally robust and low-maintenance. A hardware fault in the field could undermine both carbon yield and farmer trust.
- Carbon market volatility. Revenue depends on the price and demand for biochar carbon removal credits. A downturn in voluntary carbon markets could squeeze margins quickly.
- Farmer adoption. The success of insetting requires farmers to consistently use the biochar in their soils. Changing long-standing practices is a behavioral challenge beyond hardware installation.
The company’s partnerships with major traders are a key mitigant, providing built-in distribution and farmer relationships. The involvement of PINC as an investor also offers a potential route to offtake and scale within a major corporate supply chain.
What to watch in the next harvest
The next twelve months will test the industrialization thesis. Key milestones will be the rollout of the next-generation reactor modules and the conversion of signed revenue into installed, operating units that are consistently generating verified carbon credits. Expansion into a second crop, like cocoa, would demonstrate the repeatability of their wedge beyond coffee.
Financially, the $3 million seed provides a runway, but scaling hardware and field operations is capital intensive. Another fundraising round within 18-24 months seems a likely next step, especially if they can show those $5 million in signed deals translating into deployed assets and carbon tonnage.
For now, Cotierra has carved out a clear niche: the decentralized, supply-chain-integrated path for biochar. They are not trying to build the biggest reactor, but the most distributed network. In the calculus of carbon removal, sometimes the most important innovation is not making more char, but wasting less diesel.
Sources
- [Cotierra] Company website | https://www.cotierra.com/
- [tech.eu, September 2026] Cotierra raises $3M to scale decentralised biochar across tropical agriculture | https://tech.eu/2026/09/29/cotierra-raises-3m-to-scale-decentralised-biochar-across-tropical-agriculture/
- [Circulator, September 2026] Cotierra raises 3 million USD to improve soil quality with biochar | https://circulator.ch/en/news/45d1c0fc4dd43c501b708b3364b73ec5
- [Sesamers, September 2026] Cotierra raises €2.6M for on-farm biochar in coffee supply chains | https://www.sesamers.com/funding/cotierra-raises-2-6m-biochar-coffee-supply-chains/
- [Euronext, April 2026] Press release referencing Coffee Canopy Partnership | https://www.euronext.com
- [Venture Kick] Company profile and metrics | https://www.venturekick.ch
- [PERPLEXITY SONAR PRO BRIEF] Web-grounded research summary | Various URLs