Circular economy

Our operations are driven by waste biomass, and to limit the transport distances we always source it locally. This delivers new income streams for producers, who can also benefit from the biochar we manufacture.

feedstocks diagram

Local solutions to global challenges

While the carbon removal addresses the global challenge of climate change, our solutions are truly local.

The plants bring together local industrial energy users with nearby waste biomass producers, creating a mutually beneficial and self-sustaining partnership driving economic and environmental benefits in the local area.


When biomass is used as a fuel for energy production it is referred to as feedstock.

To maximise the environmental benefit of our operations we use waste biomass, as opposed to purpose grown energy crops, so that land remains productive for agriculture, or even rewilded.

The composition of the feedstock is important for the energy generation and the properties and value of the biochar we produce.

Some industries, such as food manufacturing, may have a need for energy and produce their own waste biomass, but for most locations, we take on the responsibility of sourcing a reliable and consistent supply.

Our regions

Our first phase focuses on UK regions with high suitable feedstock availability and local industries requiring heat and cold energy.

Yorkshire and Humberside

Wheat and livestock centre
Manufacturing industries

East of England

Wheat and poultry centre
Food production

South West England

Dairy centre
Food production

Onnu UK regions

Have waste biomass?

We will analyse your waste for suitability at a local Green Energy Hub.

Commit to buying long term at a secured price

Advise on any treatment or preparation needed to increase value (for example drying or pelletization required).

Agree collection / delivery arrangements based on your needs

Let's talk