RAS System Cost Breakdown: CAPEX, OPEX and Illustrative Examples
RAS CAPEX per annual tonne = scoped installed cost ÷ production capacity in t/year. Operating cost per kg = annual operating cost ÷ harvested kg in the same period. Keep working capital separate, use dated site-specific quotations, and declare species, country, currency and exclusions. No verified market price ranges or client cases are presented here.
Reviewed 18 October 2026. Technical references describe planning principles, not current prices.
Supplier and manufacturer listings are provided for research, transparency and discovery only. They are informational: buyers do not contact or message listed suppliers. Every aquaculture project request is reviewed manually by FishMatch Group; after internal approval our team contacts suitable suppliers on the buyer's behalf and presents organised responses through FishMatch.
Use dated scoped quotes
Same period and product basis
Include start-up through customer receipts
CAPEX breakdown, line by line
Use a scope checklist rather than unsourced percentage shares. Record quote date, currency, country, species, capacity, tax treatment and installation boundaries for every line. Working capital and debt service are not included in this CAPEX checklist.
| Cost line | Evidence needed | What sits inside it |
|---|---|---|
| Civil works & building envelope | Local quote | Site preparation, drainage, building, insulation and installation boundaries. |
| Tanks, piping & pumping | Scoped quote | Working volume, hydraulic head, materials and standby duty. |
| Mechanical filtration | Scoped quote | Peak flow, solids load, screen selection and sludge handling. |
| Biological filtration | Scoped quote | Peak feed, TAN load, species, temperature and verified media performance. |
| Oxygen & CO₂ stripping | Scoped quote | Peak oxygen demand, degassing duty and emergency supply. |
| Disinfection & biosecurity | Scoped quote | Water analysis, treatment duty and separation of production units. |
| Heating, cooling & ventilation | Local design | Source-water and ambient temperatures, heat recovery and building losses. |
| Electrical, controls & backup | Scoped quote | Power availability, alarms, generators and failure response. |
| Engineering, permits & installation | Local quote | Design responsibility, discharge permissions, commissioning and operator training. |
| Contingency | Risk allowance | State the risk basis explicitly; no universal bank-required percentage is established here. |
Operating cost per kilogram
Model OPEX per kg of live weight harvested, not per kg of installed capacity. With unchanged operating costs, a lower harvest denominator raises the calculated cost per kg. Debt service, depreciation, tax and working capital remain separate unless explicitly included.
| OPEX line | Calculation basis | Notes |
|---|---|---|
| Feed | Feed kg × price/kg | Use site-specific FCR and dated feed quotations; record mortality and biomass basis. |
| Energy | kW × hours × tariff | Sum the equipment load schedule; include heating, cooling, backup fuel and oxygen generation. |
| Juveniles / post-larvae | Number × delivered price | Species, life stage, survival assumption and nursery scope must be explicit. |
| Labour | Annual staffed cost | Local wages, shifts, training and specialist support. |
| Oxygen & consumables | Quantity × unit price | Check whether oxygen production electricity is already in the energy line. |
| Maintenance & insurance | Dated service quotes | State spare-parts scope, coverage, exclusions and replacement schedule. |
| Harvest & logistics | Actual scope and quotes | Declare live-weight versus saleable-product basis; include processing yield if relevant. |
Four unpriced RAS planning checklists
These are scope prompts, not observed projects, historical prices or supplier offers. No geographic availability or performance is inferred. Missing prices remain unknown rather than zero.
Warm-water finfish RAS
Unpriced planning checklist, not a FishMatch client case. Country, capacity, source-water temperature and energy tariff remain project inputs.
- Installed CAPEX
- Quote required
- Per annual tonne
- CAPEX ÷ t/year
- OPEX
- Annual OPEX ÷ harvested kg
- Confirm species and harvest schedule before choosing density.
- Compare source-water temperature with year-round culture requirements.
- Fund nursery, start-up and cash outflows before customer receipts separately.
Salmon post-smolt RAS
Unpriced planning checklist. Freshwater or seawater duty, transfer weight and production cycle must be specified.
- Installed CAPEX
- Quote required
- Per annual tonne
- CAPEX ÷ t/year
- OPEX
- Declare biomass basis
- Specify corrosion protection and intake-treatment scope.
- Request documented oxygen and power redundancy.
- Do not compare juvenile-production costs with grow-out harvest costs without normalising scope.
Indoor shrimp RAS / biofloc
Unpriced planning checklist. RAS and biofloc are not interchangeable; treatment, solids control and shrimp-specific husbandry require review.
- Installed CAPEX
- Quote required
- Per annual tonne
- CAPEX ÷ t/year
- OPEX
- Declare product form
- Request a concept layout showing intake, nursery, grow-out, solids and discharge routes.
- Verify post-larvae, salinity, oxygen and survival assumptions for shrimp rather than borrowing tilapia defaults.
- Keep head-on harvest, processed product and saleable yield denominators distinct.
Phased commercial RAS
Unpriced planning checklist. Modules, shared utilities and the expansion boundary must be listed; no economies-of-scale percentage is assumed.
- Installed CAPEX
- Quote each phase
- Per annual tonne
- Use commissioned capacity
- OPEX
- Use actual harvest
- Separate initial utilities from future expansion equipment.
- Include commissioning and biological ramp-up in the cash-flow schedule.
- Test delayed harvest and customer payment without assuming later modules fund themselves.
What actually changes the number
- Species, life stage and harvest schedule determine the biological design basis.
- Climate and source-water temperature affect heating, cooling and building scope.
- Salinity changes material, intake-treatment and corrosion requirements.
- Emergency oxygen, standby power and response plans require explicit scope.
- Automation changes installation cost and staffing requirements.
- Capacity is annual harvest in t/year, not standing biomass or installed tank volume.
- Country-specific civil works, wages, tariffs, freight, duties and taxes require dated evidence.
- Discharge permissions and sludge treatment must be included or explicitly excluded.
Match the budget evidence to the procurement stage
- Concept: record species, country, production basis, site constraints and missing inputs; no price is inferred.
- Feasibility: obtain water tests, permit and utility constraints, a load schedule and dated local cost evidence.
- Procurement: issue the same package scope; compare installation, freight, tax, commissioning, exclusions and contract responsibilities.
- Funding and execution: keep working capital, construction cash flow and biological ramp-up distinct; independent engineers and advisers review assumptions.
Run your own numbers
Run the numbers on your own project: the RAS system cost calculator shows illustrative model outputs, not current quotations or bank terms; replace assumptions with your own evidence. The RAS sizing calculator supports preliminary tank, flow and oxygen calculations, not an approved engineering design.
Technical sources and evidence limits
FAO / EUROFISH, A Guide to Recirculation Aquaculture (2015), explains system components, operation and planning. SRAC Publication 4503 (2013) describes biofloc management. Neither is a source for 2026 prices, supplier availability or the unpriced checklists above.
RAS cost FAQ
How much does a RAS system cost per tonne of annual production?
Divide the scoped installed CAPEX by annual production capacity in tonnes/year. Record country, currency, quote date, species and inclusion boundaries. No verified country-specific RAS price range is available on this page; capacity alone cannot price a project.
What belongs in RAS CAPEX and working capital?
List equipment, buildings, civil works, engineering, freight, installation, commissioning, taxes and contingency separately. Working capital is separate from this CAPEX checklist: model feed, stock, wages, utilities and other cash outflows until customer receipts, less confirmed supplier credit. Add it explicitly to the funding requirement.
How do I calculate operating cost per kilogram?
Divide annual operating costs by harvested kilograms over the same period. State live weight or saleable product, FCR, survival, energy tariff, utilisation and exclusions. This operating subtotal excludes debt service, depreciation and tax unless you explicitly add and label them.
How much energy does a RAS use?
Use an equipment load schedule in kW and operating hours to calculate kWh, then apply the site tariff. Include pumping, aeration, oxygen supply, heating and cooling without double counting. Tank volume alone does not establish energy per harvested kilogram.
How long until a RAS reaches full production?
Plan permitting, design, procurement, construction, commissioning and biological ramp-up separately. Species, life stage, site approvals and supplier-confirmed schedules determine the dates. No fixed commissioning or harvest timeline is promised here.
What contingency should a RAS budget carry?
Use a documented project risk allowance and identify its calculation base. Obtain local engineering and provider review where relevant; this page does not establish a lender-required percentage or a credit decision.
Does FishMatch sell RAS equipment or publish supplier contacts?
FishMatch Group is an independent, human-reviewed procurement platform, not an automatic marketplace. Buyers can submit an infrastructure brief for projects from USD 250,000; buyer tools and procurement entry are free. Manufacturers submit private capability profiles. Supplier identities, availability, certification, quotes and engineering outcomes are not guaranteed.
Prepare a comparable RAS procurement brief
Every RFQ is reviewed by a person before any supplier is contacted. Send your production target, site and water data for scope review. Quotations and availability depend on supplier confirmation; design responsibility stays with qualified engineers.