100-ton recirculating aquaculture (RAS) farm — engineering, budget & financing
A 100-ton/year recirculating aquaculture system (RAS) is the entry-scale industrial fish farm — big enough for a full commercial P&L, small enough to finance and permit in most jurisdictions. This blueprint sets the engineering, budget, equipment, water/power and financing structure that international EPCs, DFIs and export banks expect to see.
100 t/year finfish output · ~10 kg/m³ stocking · 95–99% water recirculation
- Vendor-neutral
- DFI + ECA ready
- Benchmarked CAPEX
- Water & power sized
- Financing structured
Engineering
- Grow-out biomass: 100 t/year steady-state, ~30–40 t standing biomass at ~10–25 kg/m³ depending on species
- Culture volume: 3,000–4,000 m³ across nursery, on-grow and pre-harvest tanks
- Mechanical filtration (drum filters 40–60 µm) + moving-bed biofilter (MBBR) sized for TAN load of feed × 0.03
- Degassing / CO₂ stripping, protein skimming, UV / ozone disinfection, oxygen cone injection
- Full redundancy on blowers, pumps and oxygen; emergency LOX + genset autonomy ≥ 24 h
Project Budget
| Line item | Low | High |
|---|---|---|
| Civil, tanks, insulated building | $0.9M | $1.6M |
| RAS process equipment (filters, MBBR, O₂, UV/ozone) | $1.2M | $2.2M |
| HVAC, water heating / chilling, dehumidification | $0.4M | $0.8M |
| Automation, sensors, feeders, SCADA | $0.3M | $0.5M |
| Backup power, LOX, redundancy | $0.2M | $0.4M |
| Engineering, permits, commissioning, contingency | $0.5M | $0.9M |
Total CAPEX: US$ 3.5M – US$ 6.4M
Equipment Planning
- Drum filters (2×), MBBR biofilter media (~250–400 m³ carrier), CO₂ strippers
- Oxygen cones or low-head oxygenators, on-site VSA/PSA or LOX supply
- Circulation pumps (VFD, N+1), aeration blowers, ozone / UV disinfection
- Grading, pumping, harvest and stunning line
- Water quality sensors (DO, pH, ORP, TAN, NO₂, temp) + SCADA / PLC
Water Requirements
Power Requirements
Supplier Matching
FishMatch briefs 3–5 audited suppliers per package, benchmarks quotes on CAPEX / OPEX / lead time, and coordinates ECA + DFI financing across the shortlist.
RFQ Builder
One structured RFQ, vendor-neutral to shortlisted suppliers. No commitment, no fees.
Financing
- 70–80% senior debt from DFIs / commercial banks with ECA cover on European or Asian equipment
- Blended finance for food-security projects: IFC / IDB / AfDB concessional tranche + commercial tranche
- 10–12 year tenor with 2-year grace during construction and ramp-up
- Equity from strategic operators, family offices, or aquaculture-focused funds
ROI
Indicative benchmarks. Actual returns depend on species, market, offtake, financing structure and operator track record.
Timeline
- Feasibility & permits M0–M6Site, environmental, water rights, offtake LOIs
- Engineering & financing close M4–M12FEED, EPC selection, ECA + DFI term sheets
- Construction M10–M22Civil, mechanical, process installation
- Commissioning & biological ramp-up M20–M30Water maturation, first stocking, ramp to 100 t
Government Incentives
- IFC / AfDB / IDB / EBRD blue-economy financing at 5–8% with 7–15 year tenors
- Export credit agency (ECA) cover from Euler Hermes, SACE, UKEF, EDC, K-SURE
- Blended finance and viability gap funding for food-security aquaculture projects
- National agri-processing / SEZ tax holidays (5–15 years) and import-duty waivers on equipment
- Aquaculture-specific grants and concessional loans under national blue-economy strategies
Calculators
100-Ton RAS Farm — frequently asked
How much does a 100-ton RAS farm cost?
US$ 3.5M–6.4M all-in CAPEX depending on species, location, redundancy, and whether solar / BESS is included. FishMatch benchmarks 3–5 EPC quotes per project.
Which species are best for a 100-ton RAS?
Atlantic salmon smolts, kingfish, barramundi, tilapia and African catfish are the most bankable. Species choice drives temperature, stocking density and offtake price.
How is a 100-ton RAS financed?
Typically 70–80% senior debt (DFI + ECA-covered commercial), 20–30% equity, with 10–12 year tenor and 2-year grace. Blended finance is common in Africa, LATAM and MENA.
Vendor-neutral EPC + ECA + DFI structuring, from feasibility to first harvest.