Substrate Biochar Starts Up 5,000 tCO2e Site in Kwa-Zulu Natal

Substrate Biochar has commissioned its first industrial-scale biochar plant in South Africa, a facility designed to remove 5,000 tonnes of CO2-equivalent per year once it reaches full capacity. The site, named Charworks 01, sits in the province of Kwa-Zulu Natal and produced its first biochar this month. The company plans to triple the site's capacity in 2027.

The commissioning marks the entry point of a much larger build-out. Substrate Biochar, a developer of industrial biochar solutions across Africa, says it holds more than 15 projects in its pipeline for southern Africa and intends to deploy repeatable sites with partners through its project development platform.

What does the site actually process?

The plant runs on pine sawdust sourced from local sawmills. According to the company, diverting this feedstock prevents the waste biomass from being stockpiled or burnt, two disposal routes that would release additional CO2 into the atmosphere. Substrate Biochar states that its team works with partner mills that manage standing pine forests.

The output serves two markets at once. The company positions the biochar as durable carbon dioxide removal (CDR), and it also targets agricultural applications, with claimed benefits for local soils and degraded landscapes.

From derelict site to operating plant

The construction timeline stands out in a sector where permitting often stalls projects for years. Substrate Biochar commissioned the Kwa-Zulu Natal facility in September 2026.

"6 months ago, this was a derelict site," the company said in a recent publication. "Since then we've built the plant on site and got all permits in place, and a team of 15+ has been learning to run it."

The site is not yet running at full tilt. "We're now ramping up towards 24-hour operation, with additional production lines to follow to take the site to full capacity," the publication states. A team of more than 15 people now operates the plant, and the permits required for operation are already in place, according to the company.

Built capacity versus announced pipeline

Charworks 01 is the only operating asset in the company's portfolio today, and the distinction between what runs and what is planned frames the market question. The 5,000 tCO2e annual figure represents designed capacity at full operation, not current throughput, and the plant is still climbing toward round-the-clock production with additional lines to come.

The threefold expansion to roughly 15,000 tCO2e per year is scheduled for 2027. Beyond that, the 15-plus pipeline projects across southern Africa remain announced rather than built, with no disclosed commissioning dates or locations. Each will test the company's stated strategy of replicating the Charworks model with partners rather than building every site itself.

A growing African biochar CDR market

The launch positions Substrate Biochar within a rapidly scaling African biochar carbon removal sector. Terraton recently secured $11.5 million to scale biochar carbon removal on the continent, and Altitude has secured 120,000 tonnes of biochar carbon removal credits (CORCs) from facilities in West Africa. Substrate Biochar describes its ambition as building Africa's largest biochar CDR platform.

What does this change for carbon removal buyers and sawmill partners in the region? For now, one operating site with secured permits and a trained team, plus a credible template for replication. The proof points arrive on fixed dates: full 24-hour operation and added production lines at Charworks 01 in the near term, and the tripling of capacity in 2027.