Composting companies working with green waste and organic residues and companies working with (anaerobic digestion) biogas production

Farmers and greenhouse operators aiming to reduce fertiliser use and to increase circularity of their operation

Policymakers working on circular economy and soil health strategies

Co-composting green waste with digestate evolved from concept (TRL 2) to system prototype and completion (TRL 6–8), producing stable, nutrient-rich compost while reducing emissions. The technology transitions to CRL 1–2 by assessing market potential, cost structures, and regulatory pathways, while securing funding, building partnerships, and validating its commercial viability.

The technology is highly replicable, as it relies on widely available inputs such as green waste and digestate and established composting principles. Its scalability is supported by modular designs adaptable to different capacities. Standardized parameters such as carbon-to-nitrogen ratios, moisture, aeration, and temperature can be adjusted to local conditions. Required infrastructure, including composting pads, turning equipment, or in-vessel systems, is widely available. Replication depends on climate, regulations, waste systems, and market demand, but with proper guidelines it can be implemented across diverse contexts.

The co-composting of green waste with digestate supports environmental, economic, and social sustainability. It diverts organic waste from landfills, reducing ammonia emissions and contributing to climate change mitigation. The process enables nutrient recycling by returning stabilized organic matter and nitrogen to soils, improving soil structure, fertility, and water retention. Economically, it reduces waste management costs and produces valuable compost that can replace synthetic fertilizers. Socially, it promotes circular economy practices and supports local waste management systems. When properly controlled, emissions and odors are minimized, ensuring environmental compliance.