C-Green

Industry

Carbon removal, Energy, Waste & circular economy, Water

Topics

Biochar & pyrolytic carbon

Role

Research / RTO — “…nd efficiency) and Karlstad University (testing HTC biocoal/ash pellets as forest fertilizers). CEO Monika Sch…”

Why it is bioeconomy

C-Green is a Swedish company that uses hydrothermal carbonization to convert wet biowaste and sewage sludge into hydrochar (biocoal) for use as biofuel, fertilizer, and soil improvement.

Found via

[Rubric] Sweden · biochar; [Rubric] Sweden · struvite

Not yet cited as a supplier in a graded solution.

• 2026-05 Latest status: The company is currently upgrading its full-scale reference plant in Heinola, Finland, to its next-generation Design 3.0 HTC technology. ↗ ↗ ↗
• 2026-08-27 C-Green kliver in i skogsindustrin – tar plats i 100-miljonerssatsning | Impact Loop
  C-Green is expanding from waste-to-biochar technology into full-scale integration within a/paper mill processes, joining a 100-million-kronor research program (Infinity Fiber) to convert wet sludge into biochar and nutrient-rich liquid for reuse, with startup …
• 2026-08-31 C-Green selected as industrial partner in EUR 9 million research initiative
  C-Green has been chosen as an industrial partner for the EUR 9 million Infinity Fiber project at Karlstad University, contributing HTC expertise and supplying biocoal from its Stora Enso Heinola plant to improve forest-fiber recycling and resource efficiency.
• 2026-05-11 C-Green uppgraderar sin fullskaliga anläggning i Heinola till nästa generations HTC-teknik
  C-Green uppgraderar sin fullskaliga HTC-anläggning i Heinola till Design 3.0 för ökad tillgänglighet, lägre energiförbrukning och reducerade CAPEX med målet att kommersialisera tekniken; anläggningen omvandlar slam till torrt HTC-biokol och möjliggör …
• 2026-06-05 C-Green säkrar finansiering för uppgradering av Heinola-anläggningen till Design 3.0
  C-Green AB has secured financing of at least 40 million SEK to upgrade its full-scale HTC plant in Heinola, Finland to Design 3.0 and accelerate commercialization, aiming for TRL9 and industrial deployment, with an additional up to 10 million SEK potential to …
• 2026-06-22 C-Green Raised SEK 40M to Make Sewage Sludge Actually Profitable
  C-Green is de-risking and commercializing a proven hydrothermal carbonization process to turn wastewater sludge into a sellable hydrochar, with a focused upgrade of its Heinola, Finland plant (HTC Design 3.0) to TRL 9 to prove reliable, scalable economics …
• 2026-08-28 C-Green utvalt som industripartner i forskningssatsning på 100 miljoner kronor
  C-Green is chosen as an industrial partner in the Infinity Fiber project, contributing expertise in Hydrothermal Carbonization (HTC) to help valorize forestry residues and explore HTC biocoal production from biosludge, with aims to improve resource use and …

Ownership & investors 1

Similar companies

AquaGreen · Pyreg · envorloop GmbH · HTCycle · L-Recycling · Yilkins B.V. · Envirohemp S.L. · SPSC GmbH