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Our Sustainability


Maintaining the carbon cycle of wood-based products

The growing of energy crops is an important development in contributing to renewable energy supplies, and at the same time, helping to mitigate CO2 emissions. Combustion of wood fuel is carbon neutral if the harvested wood comes from forests and crops that are sustainably managed.

Graphic showing a forest and each stage of the growth and manufacuture of WillowWarm products
Image of Irish-grown forests and biomass being harvested

36 Year Willow Coppice

Put simply, our products utilise the part of a tree (sawmill residues and pulpwood) that is not usable for construction lumber and for this reason helps to reduce carbon emissions and maintain the entire life carbon cycle of wood-based products.
Image of cut woods logs stacked with a blue sky in the background

Natural forestry producing clean virgin wood

Willow is a Short Rotation Coppice (SRC) perennial crop; once harvested, the crop is regrown providing 36 years of continuous crop production without the need for annual ploughing, re-seeding, or re-planting. Instead, it is simply re-harvested every two years and the cycle continues.

WillowWarm Briquettes on a production line

Willow pulp, sawmill residues & pulpwood

Using wood manufacturing by-products and end of life wood products as a source of energy is the final link in the virtuous wood cycle. Instead of the energy being wasted in landfill or forest brash allowed to rot on the forest floor, it provides a carbon neutral substitute for fossil fuels.

Showing the boiler room at the WillowWarm manufacturing plant

Drying WillowWarm with our biomass burner powered sustainably by using biomass

Since wood combustion returns to the atmosphere, the CO2 that has been taken from it by the growing of trees does not contribute to global warming or the greenhouse effect.

Piles of wood chips stacked at the WillowWarm manufacturing plant

Leaving the production line now less 7-9% moisture

Our products are free from contaminants and are not made of recycled wood.

Essentially, wood produces little ash and wood energy is clean!

WillowWarm Briquette bales sitting in front of an open fire

WillowWarm keeping your home warm

The carbon dioxide (CO2) produced during the burning of our finished products is completely offset during the growing stage by the crops themselves, as they take CO2 from the air through photosynthesis. In essence, the more willow that is planted, the more CO2 is removed from the atmosphere, creating a cleaner environment.

Our products form part of a much bigger circle of sustainability:

Utilising Irish Forestry for a better future.

How are we using forestry to complete the carbon cycle and help Ireland reach net zero emissions?

One hectare of willow produces approximately 13 tonnes of willow every year with an energy content of 13.2 Gigajoules (GJ) per tonne. Therefore, one hectare produces 172 GJ of energy per year. Assuming that 1,000 litres of home heating oil has an energy content of 38 GJ, then one hectare of willow has the same energy content as 4,500 litres of home heating oil. (Source: Teagasc)

Willow and forests growing
Circle image with a tree in the centre and the words around the edges stating Carbon neutral crop, Preennial crop circular badge
Circle image with a plant in the centre and the words around the edges stating Good for the economy, Good for the environment circular badge
Circle image with a tractor in the centre and the words around the edges stating Alternative land use, Farmers & Land owners circular badge
Circle image with an Irish flag in the centre and the words around the edges stating 100% indigenous, home grown supply circular badge

We utilise the parts of the tree which are not usable for construction lumber

Why does forestry play such an important role in combating climate change? Trees absorb the carbon dioxide in the atmosphere. Just one cubic metre of wood absorbs one tonne of CO2 through photosynthesis. The combustion of wood fuel is carbon neutral if the harvested wood comes from forests that are sustainably managed. The carbon dioxide released from combustion of wood is effectively taken up by the forests as they regrow following harvest. A small proportion of the energy obtained from wood fuel is used in harvesting and transport, but it is generally well below 10%.


Sources
  • European Commission’s DG Enterprise, 2003
  • Edinburgh Centre for Carbon Management
  • Eugene Hendrick and Kevin Black, Climate change and Irish forestry 2008
  • Comparison of CO2 emissions of beams made of different materials Indufor, CEI-Bois Roadmap 2010, 2004