500-Ton Annual RAS Fish Farm — Engineering & Financing Playbook
A neutral reference architecture for a 500 t/year indoor RAS fish farm (tilapia, salmon smolt, trout, sea bass, barramundi) — system stack, project stages, main CAPEX drivers, bankability questions and financing path. No brand names, no unverified profitability claims.
Project assumptions
Score your project in 60 seconds
Set your current status on seven factors. We calculate a 0–100 readiness score, flag gaps EPCs and lenders will raise, and pre-fill an RFQ your concierge can act on immediately.
Planning — foundational work still open, but structured RFQs feasible
- Energy plan: Grid connection secured
- CAPEX clarity: USD 2M–10M — mid commercial
- Sign a site option or lease for at least 20 years
- Commission water lab tests (salinity, TAN, iron, TDS) and file abstraction permit
- Engage local permitting consultant and file EIA scoping
- Secure at least one signed LOI from a processor or importer
Indicative execution readiness. Not a credit decision or engineering warranty.
System stack
Tanks & raceways
- • Nursery: 4–8 modular tanks 50–150 m³
- • Grow-out: 12–20 large tanks 200–500 m³ each
- • Central drain, settling cone, sloped floor
- • Total culture volume: ~5,000–8,000 m³
Mechanical filtration
- • Drum filters (40–60 µm) sized for 100–150% system flow
- • Foam fractionators for dissolved organics
- • Solids thickener + sludge dewatering (screw press or geobag)
Biological filtration
- • MBBR biofilters sized for peak TAN load
- • 500–800 g TAN removed per m³ media per day
- • Optional denitrification for very low-exchange
Oxygenation & CO₂ control
- • PSA oxygen generators (dual redundancy) + LOX backup
- • Low-head oxygenators per tank
- • Degassers / cascade columns for CO₂
Water treatment & biosecurity
- • UV / ozone on makeup and recirculation
- • Segregated nursery / grow-out loops
- • All-in/all-out per module, foot baths, PPE zones
Monitoring & control
- • Continuous DO, temp, pH, ORP, TAN, NO₂ probes
- • SCADA / PLC with mobile alarms
- • Redundant sensors, manual sampling protocol
Energy & utilities
- • 3.5–5.5 kWh per kg fish produced
- • Standby generator sized for full life-support load
- • Heat recovery / heat pumps for temperature control
Model this project on the page
Adjust the inputs to match your site and load profile. Outputs update live and can be sent as a pre-filled, confidential RFQ to project-matched suppliers.
RAS Sizing Calculator
Recirculating aquaculture systems (RAS) are sized around standing biomass, feed load and target density. This tool derives system volume, daily make-up water, TAN production, MBBR biofilter volume and oxygen demand — the five numbers every RAS engineer starts with.
Trout/salmon 40–80, tilapia 60–120
Modern RAS 3–10%
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
Commercial Oxygen Demand & LOX Cost Calculator
Oxygen is life-support and typically 3–10% of commercial OPEX. This sizes total daily O₂ demand from steady-state biomass and species-specific respiration, then converts it into liquid oxygen (LOX) tonnage and annual cost at a delivered LOX price.
Peak in-water biomass, not annual harvest.
O₂ demand rises ~10% per 3 °C.
LOX cones ~90%. Aeration ~15%.
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
Aquaculture Water Consumption Calculator
Water permits are the #1 approval risk for commercial aquaculture. This tool converts system volume, exchange rate and evaporation into daily/annual make-up water and per-kg-fish intensity — the number regulators, banks and ESG auditors actually ask for.
RAS: 1–10%. Flow-through: 100–500%. Ponds: 2–10%.
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
Feed Conversion Ratio Calculator
FCR = feed given ÷ weight gained. Lower is better. It is the single biggest driver of farm profitability.
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
Commercial Aquaculture CAPEX Estimator
Rapid CAPEX for a commercial fish farm, shrimp farm, RAS plant or sea-cage project. Sizes total investment from target production, applies system-specific CAPEX/kg benchmarks, then breaks it into the six lines every bank wants: land & civil, process equipment, engineering & permitting, working capital, contingency and financing costs.
Drives base CAPEX per tonne of annual capacity.
Feed + energy + labor + overhead per kg.
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
Commercial Aquaculture ROI & IRR Calculator
Investor-grade returns model for commercial aquaculture: annual EBITDA, payback, levered IRR estimate and Debt-Service Coverage Ratio (DSCR). Accounts for equity/debt split, interest, tax and a realistic 3-year ramp-up.
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
Operating Cost (OPEX) Calculator
OPEX drives profitability more than CAPEX for most farms. This tool sums the major operating costs — feed, electricity, labor, fingerlings, water and maintenance — and expresses the total as $/month and $/kg produced.
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
Aquaculture Energy Cost Calculator
Energy is 8–25% of commercial aquaculture OPEX and is the single line most sensitive to design. This tool converts your connected kW load and tariff into annual kWh, annual $ and $/kg-fish so you can compare grid, solar-hybrid and diesel scenarios apples-to-apples.
Fraction of connected kW actually drawn on average.
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
Aquaculture Financing & Loan Amortization Calculator
Lender-side view of a commercial aquaculture loan: monthly and annual debt service, total interest paid, interest-during-construction (IDC) and the resulting DSCR at your projected EBITDA. Use before approaching a bank, EXIM agency or aquaculture-specialist fund.
Interest-only period during construction and biomass ramp.
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
Project stages
- 1. FeasibilitySite, water, energy, market, permits, indicative CAPEX/OPEX. 6–8 weeks.
- 2. Concept & basic designMass balance, layout, equipment list, class-3 budget. 8–12 weeks.
- 3. RFQ & supplier selectionNeutral RFQ to project-matched vendors. 10–14 weeks.
- 4. Detailed engineeringP&IDs, electrical single-line, HVAC, controls. 12–18 weeks.
- 5. Construction & installationCivil, tanks, piping, equipment, electrical, controls. 10–16 months.
- 6. Commissioning & biological start-upWater fill, biofilter maturation, staged stocking. 3–6 months.
- 7. Steady-stateFull production over 12–18 months post-commissioning.
Main CAPEX drivers
Indicative share of total installed cost. Actual split varies by region, redundancy, automation and civil scope.
| Civil works & building envelope | 20–30% |
| RAS equipment | 25–35% |
| Oxygen & life support | 8–12% |
| Electrical, controls & SCADA | 8–12% |
| HVAC & heating | 6–10% |
| Engineering, permits & PM | 6–10% |
| Contingency | 10–15% |
Bankability questions
- Is the water source fully characterized and reliable year-round?
- Is grid electricity stable and tariff modeled 10 years?
- Is a signed offtake or LOI in place with a processor / retailer?
- Is fingerling supply secured with two qualified hatcheries?
- Is a qualified operator identified with prior large-RAS experience?
- Are permits achievable in the target timeline?
- Is CAPEX supported by class-3 estimates from two independent sources?
- Is OPEX modeled at pessimistic / base / optimistic scenarios?
- Is technical DD available for the RAS technology provider?
- Is financing matched to cash-flow ramp-up (equity, debt, ECA, leasing)?
Key project risks
- Biological ramp-up slower than plan (first 12–18 months usually under-produce).
- Energy price volatility hits profitability directly.
- Single points of failure in oxygen or power → catastrophic losses without redundancy.
- Fingerling quality variability affects survival and growth — dual-source and screen.
- Discharge and biosecurity regulation may tighten — design for tomorrow's rules.
Common questions
Get the bankability brief — 500-Ton RAS Fish Farm
6-page investor-grade brief: CAPEX bands, OPEX assumptions, revenue model, sensitivity, risk register and a country permit map — tailored to this archetype. Free, sent to your inbox and printable to PDF.
Turn this 500-Ton RAS Fish Farm archetype into a real RFQ
FishMatch Group prepares a neutral, confidential brief based on the assumptions, system stack and cost drivers on this page — then matches you with 1–3 project-matched international suppliers or EPC partners. Supplier identities stay private until you approve them. Buyers never pay.
Answer a short guided form — species, capacity, site, timeline, budget range. Takes ~3 minutes. Fully confidential.
Our team screens project-matched providers globally and prepares a comparable, budget-grade RFQ package for each.
You receive shortlisted proposals with technical, commercial and financing terms — ready for board or lender review.
Confidential · Supplier-neutral · No buyer fees · Response within 1 business day