Hammerfest, Norway · 70.6° north · delivered by Sirputis
We build seaweed factories.
This one runs above the Arctic Circle.
Complete processing lines and modular biorefineries — engineered in Lithuania, commissioned where the seaweed is. Washing, pressing, drying, extraction. From single machines to full plants.
Request a budget quotation Book a 20-minute callDevelopment funder or coastal government? See the Coastal Community Programme →
From sea to product
The whole seaweed processing chain, engineered
It starts wet, salty and in a hurry
Fresh seaweed degrades within 24–48 hours. Our seeding machines and harvest-side equipment — commercially tested in the EU SeaMark project — are built for that clock.
Modules that bolt together into a plant
Receival, washing and de-sanding, pressing, drying, milling, extraction — containerised, pre-integrated, commissioned by our own engineers. Each module is a standardised unit, engineered once and replicated site by site — configured to your feedstock, not re-engineered from scratch. Start at pilot scale; expand without rebuilding.
Designed backwards from what your market pays for
Alginate, biostimulants, dried seaweed, specialty extracts — the extraction train is engineered around your feedstock and product spec, not a machine catalogue.
Equipment
Seaweed processing equipment — single machines or the complete line
Every machine below is ours — designed, fabricated and automated in-house in stainless steel, with a granted patent on our seaweed harvester. Click through for specifications.
Seeding machines
3 km of grow line per hour — EU SeaMark proven.
Harvest & receival
Conveyors and hoppers for wet, heterogeneous biomass.
Washing & de-sanding
Recirculated freshwater; sand and stones out, fibre intact.
Screw presses
SP-series presses tuned to species and product path.
Drying & milling
Low-temperature drying and grinding that protect value.
Extraction & automation
Containerised Biostim 500 and Biostim 2000 extraction units — high-shear trains with in-house PLC/HMI control.
Shredding & grinding
Two-stage size reduction — even particle size into every next step.
Feeders & dosing
Screw feeders, dosing and conveyors that keep the line in balance.
Our claim
The plant as a product.
Conventional hydrocolloid processing uses 15–30% of the seaweed it takes in and discards the rest. One-off, stick-built plants blow budgets and timelines. We replaced both with a standard: the Sirputis Standard Module — a 1 t/h reference design, fabricated in Šiauliai, deployed in months, engineered so every stream leaves as a product.
Utilisation figures: Liu et al. 2024, Compr. Rev. Food Sci. Food Saf. (15–30% used, 70–85% discarded). How it is engineered in → · Reference plants & projects →
Sirputis Coastal Community Programme
Where seaweed grows, industry can too
Beyond single plants, Sirputis builds development programmes with coastal communities, governments and funders — turning local seaweed into local processing jobs and export products.
- Containerised preprocessing at the landing site — so first processing, and its margin, stay in the community, inside the 24–48 h freshness window
- Programmes structured for development finance — designed to fit NORAD, World Bank and EU blue-economy instruments
- Commissioning and operator training built with the people who farm the seaweed — from Zanzibar to Indonesia, largely women
- Active programme dialogues in Southeast Asia, East Africa, the Caribbean and Latin America
The model is simple: development finance funds the capital; the community or a local operator owns and runs the plant; Sirputis engineers, builds and trains — then stays on for support.
Explore the development programmes
Configure
Assemble your seaweed biorefinery, module by module
Toggle the blocks your project needs — then let our engineers price the configuration.
Beyond equipment
Partners, funders & investors
Sirputis builds and delivers standardised seaweed-processing plants — and works with the organisations scaling this industry: strategic and financial investors, development funders, and coastal-programme owners. If that is you, talk to us directly — no RFQ form needed.
Book an introduction call info@sirputis.comStart here: investors & funders → · reference plants & funded projects → · sustainability & SDG impact → · about Sirputis →
Planning a plant? Start with engineering.
Feedstock, volume and target products in — indicative process flow, footprint, utilities and an itemised budget quotation out. First reply within one business day.
Request a budget quotation Book a callDevelopment funders and coastal governments: start with the Coastal Community Programme →