Aquaculture

We turn fish sludge and silage into renewable energy. This provides the aquaculture industry with sustainable management of residual products, reduces the environmental impact and creates valuable resources from former waste.
fish farming

Sustainable resource utilisation in the aquaculture industry

The aquaculture industry produces large quantities of organic waste products that have traditionally been viewed as a costly waste challenge. At Antec, we view fish sludge and fish silage as valuable energy resources. By integrating our facilities into the value chain, we transform aquaculture waste into renewable energy and bio-fertilisers.

A profitable solution for residual products

We offer robust and circular handling of the largest fractions from both land-based and sea-based facilities:

  • Fish sludge We accept sludge from land-based fry hatcheries and post-smolt facilities (dried to a dry matter content of 20–25 %).

  • Fish silage We process silage from production waste and dead fish, ensuring safe, hygienised decomposition.

  • Circular economy: By processing this waste into liquefied biogas (LBG), the aquaculture industry contributes directly to zero-emission transport on land and at sea.

Benefits for the aquaculture operator

Collaboration with Antec gives the industry the opportunity to reach its sustainability goals faster:

  • Reduced environmental footprint: By capturing the methane potential in the sludge before it is disposed of or released, the industry's overall greenhouse gas emissions are reduced.

  • Local value creation Surplus energy and biofertiliser create ripple effects in the local community where the fish farms are located.

  • Total responsibility with the DBO model: Antec builds, owns and operates the facilities. This means that the fish farmer gets professional waste management without having to invest in or operate complicated biogas technology themselves.

From waste to resource: Our technology is particularly well suited for complex biomasses such as fish sludge, ensuring a stable production of biomethane and a nutrient-rich digestate that can be returned to agriculture.

Plant

Our selected facility

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Vest Biogas

Hornindal

Q3 2026

The region's powerhouse for circular economy. With a capacity of 150,000 tonnes of biomass annually, we transform local waste from agriculture and aquaculture into liquefied biogas (LBG) and valuable biofertiliser.

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MalmIndustrialPark_3DModel_OverviewImage

Malm Biogas

Malm

Q3 2027

Strategically located by SalMar at Malm, we are building one of Norway's most advanced biogas plants. The facility will process 150,000 tonnes of biomass annually and ensure a robust, circular value chain for Trøndelag.

Read more

Shall we create the future energy solution together?

Do you have access to biomass or a desire to establish a biogas plant in your region? We are looking for local partners who want to transform manure and organic waste into green energy and biofertiliser. Get in touch for a no-obligation chat about how we can create circular value in your local area.

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