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Sustainability

Creating our own green energy

Creating our own green energy

Processing and freezing our delicious vegetables requires energy. But true to our sustainable growth strategy, our production process is a lot greener than you’d suspect. Our main source of electricity is – you’ll never believe it – vegetables. Composted into the biogas used to generate fully green electricity, waste vegetables can make up for the full 100% of energy needed to run our Hesbaye Frost site in Belgium.

Wastewater, blemished vegetables and a little help from our neighbours

Annually, the biogas plant nearby the HesbayeFrost site in Belgium converts a staggering 25,000 tonnes of biodegradable waste into electricity. Some 30% of the waste comes from Hesbaye Frost itself, made up by vegetable peels, blemished products or even the sludge that remains after the purification of its wastewater. The rest is provided by 32 neighbouring farmers, and various other public and private partners that have their own supply of biodegradable material.

From waste to resource

The biodegradable waste is amassed in big digesters and left in there to decompose for 40 days. The resulting biogas is then converted into electricity by means of cogeneration. To what effect? 25% of the energy the Hesbaye Frost site needs to run on full capacity or even 100% when its freezing tunnels aren’t running.

Going full circle on the organic waste

At the end of the biomethanisation process the digested organic material is again re-used as an excellent fertiliser to nurture the fields. Another green asset of the cogeneration process is that we harness its heat to dry shredded wood residue, which we then compress into briquettes. A potent source of fuel or very useful as kindling!

Creating our own green energy

Did you know?

The amount of electricity produced by the Biogas plant on the Hesbaye Frost site each year equals to the annual electricity consumption of 2,700 households.