Should I buy a turnkey RAS or engineer it multi-vendor?

It depends on scale and internal capability. Below ~500 t/yr, turnkey is often faster. Above 1,000 t/yr, multi-vendor with an independent basis of design typically saves 8–15% CAPEX and reduces vendor lock-in.

Which species is a land-based RAS best suited for?

High-value species that justify the CAPEX: Atlantic salmon, trout, sea bass, barramundi, yellowtail kingfish, sturgeon (caviar) and premium shrimp. Tilapia and catfish also work in RAS but require careful CAPEX discipline.

How do you compare RAS suppliers without bias?

Every RFQ ships with a standardised technical response template — flow rates, energy per kg, guarantees, references — so buyers compare like-for-like. Supplier identities are redacted from the buyer view until shortlisting.

Solutions · RAS Systems

Recirculating aquaculture (RAS) systems — engineering & procurement

Land-based RAS for salmon, trout, tilapia, sea bass, shrimp and hybrid species. Independent process design, project-matched suppliers, banker-ready CAPEX.

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Investment
$1M – $100M+
Timeline
12–24 months from concept to first stocking
Capacity band
200 t/yr niche RAS → 15,000 t/yr flagship facilities

System types

ras systems we source, engineer and finance

Full-cycle RAS (egg to plate)

Salmon, trout, sea bass and barramundi grow-out under one roof.

Post-smolt & nursery RAS

De-risks marine grow-out; reduces cage biomass and sea-lice pressure.

Hybrid RAS + flow-through

Combines biosecurity with lower energy for cold-water species.

Shrimp RAS

Zero-exchange indoor grow-out with tight nitrogen control.

What the package includes

Scope of engagement

Mass balance, oxygen budget, hydraulic sizing
Mechanical filtration (drums), biofilters, CO2 stripping
Oxygenation, ozone / UV disinfection, denitrification
SCADA / automation and alarm architecture
Building envelope, HVAC and energy strategy
Financial model and lender-ready bankability pack

Buyer outcomes

What you actually get

Independent basis of design — not written by a single supplier
Apples-to-apples RFQ across drum filters, MBBR, oxygenation vendors
Energy and OPEX modelling that survives lender scrutiny
Documented process guarantees, not marketing performance figures

Risks we design out of the RFQ

· Undersized biofilter or CO2 stripping — the #1 cause of RAS re-designs
· Sole-source turnkey contract with no independent design review
· Under-modelled energy costs on cold-climate salmon RAS

Expert guidance

What our engineers tell every buyer before signing

Vendor-neutral principles drawn from live ras systems projects. Apply these before your RFQ goes out — they change what suppliers can quote.

1
Commission an independent basis of design first
The single biggest RAS cost driver — good or bad — is the process design document. Owning it independently prevents supplier lock-in and creates a real apples-to-apples RFQ.
2
Size biofilter and CO2 stripping for the worst day, not the average
Under-sized biological treatment is the #1 cause of RAS re-designs. Model peak feed load, peak temperature and worst-case oxygen demand — then add safety margin.
3
Model energy honestly for the local climate
Cold-climate salmon and warm-water tropical RAS have very different HVAC and pumping loads. Lender-grade OPEX models must reflect this — or the project fails financing due diligence.

Want these principles applied to your specific site, capacity and off-take before suppliers see anything?

Start guided RFQ