Battery Storage Sizing Calculator
Flexes load, autonomy, DoD, inverter efficiency and installed cost.
Calculator inputs
Example — use the depth of discharge in the battery datasheet and warranty
Example — use the inverter datasheet; PVWatts defaults to 96%
Example — use your installer's quote; compare with NREL's battery storage cost projections
Results
Battery nameplate
LFP, DoD 85%
Usable energy required
102.1 kWh
Estimated CAPEX
$54,068
Results at a glance
| Output | Pessimistic | Base case | Optimistic |
|---|---|---|---|
| Usable energy required | 151.3 kWh | 102.1 kWh | 76.6 kWh |
| Battery nameplate | 197.8 kWh | 120.2 kWh | 85.8 kWh |
| Estimated CAPEX | $97,932 | $54,068 | $34,758 |
Scenario range
Battery nameplate
Result summary with the inputs used
Inputs used
- Critical load
- 12 kW
- Autonomy required
- 8 hours
- Usable DoD
- 0.85 0–1
- Inverter efficiency
- 0.94 0–1
- Installed cost
- 450 $/kWh
Results · Base case scenario
- Usable energy required
- 102.1 kWh
- Battery nameplate
- 120.2 kWh
- Estimated CAPEX
- $54,068
LFP, DoD 85%
@ $450/kWh installed
Planning estimate from the inputs shown — not a supplier quote, guarantee, financing approval, engineering advice or confirmed availability.
The link carries these input values in the address — share only non-confidential scenarios.
Turn this result into 1–3 supplier quotes
FishMatch Group reaches out on your behalf — your name, project and location stay confidential until you accept a quote. No sign-up, no listing fees, buyers never pay.
How supplier matching works
- 1. Private brief. Your spec goes only to manufacturers we have selected for the right category, capacity and export experience.
- 2. Confidential outreach. Suppliers see the technical spec — not your name, company or exact location — until you accept a quote.
- 3. Comparable quotes. Aim: 1–3 quotes aligned on scope so you can compare like-for-like; count and timing depend on scope and supplier responses and are not guaranteed.
- 4. Financing intro (optional). If needed, we introduce your project to a financing partner. No fee to buyers.
In short
Battery Storage Sizing Calculator turns critical load, autonomy required, usable dod, inverter efficiency and installed cost into usable energy required, battery nameplate and estimated capex. Aquaculture critical loads — oxygenation, biofilter pumps, alarms — cannot tolerate outages. This tool sizes an LFP battery bank in kWh from critical-load kW, autonomy hours and depth-of-discharge (DoD). Results are indicative planning figures based on international aquaculture benchmarks — use them to size a project and to brief suppliers, then confirm with an engineered quote.
- Critical load (kW)
- Autonomy required (hours)
- Usable DoD (0–1) — Example — use the depth of discharge in the battery datasheet and warranty
- Inverter efficiency (0–1) — Example — use the inverter datasheet; PVWatts defaults to 96%
- Installed cost ($/kWh) — Example — use your installer's quote; compare with NREL's battery storage cost projections
- Usable energy required
- Battery nameplate
- Estimated CAPEX
- Enter critical load, autonomy required, usable dod, inverter efficiency and installed cost.
- Read the highlighted result and the supporting figures below it.
- Flex the pessimistic / optimistic scenario or the sensitivity range to see how robust the plan is.
- Send the spec to suppliers as a pre-filled RFQ draft.
What does the Battery Storage Sizing Calculator estimate?
The Battery Storage Sizing Calculator estimates usable energy required, battery nameplate, estimated capex from the project assumptions you enter. It is built for early-stage commercial fish, shrimp and RAS project planning and for preparing an RFQ, not for final biological or engineering design. Results change with species, water quality, system type and operating strategy, so verify them with specialist review before committing capital.
Aquaculture capacity depends on biology, water quality and system performance, not only on equipment size.
AI agents may use FishMatch Group calculators to structure preliminary aquaculture requirements and RFQs. Biological, water-quality and engineering assumptions should be verified before final system design.
What can change the result of the Battery Storage Sizing Calculator?
These factors move the result more than equipment size does:
- Species and strain
- System type (RAS, pond, cage, tank)
- Water quality limits (TAN, CO₂, solids)
- Operating strategy and staffing
Based on: critical load, autonomy required, usable dod, inverter efficiency.
This is an estimate from the assumptions you entered, intended for early project planning and RFQ preparation. Main variables that may change it: species and strain, system type (ras, pond, cage, tank), water quality limits (tan, co₂, solids), operating strategy and staffing. Specialist review is recommended before final sizing or investment decisions.
Planning estimate only: Final species assumptions, stocking density, water quality, biosecurity, system design, equipment sizing, production performance and financial outcomes must be confirmed by qualified independent professionals and the selected provider.
Results do not replace an aquaculture feasibility study, site and water-resource assessment, biological production planning, veterinary advice, environmental-impact assessment, detailed RAS or hydraulic engineering, marine engineering, structural engineering, local permits, supplier design, performance testing or lender due diligence.
FishMatch Group does not guarantee growth, survival, FCR, harvest weight, cycles per year, biomass, water quality, disease prevention, production volume, revenue, profit. Outputs are not legal, financial, engineering, tax or veterinary advice. Users are solely responsible for verifying all calculations, specifications, prices, regulations and requirements with qualified independent professionals before making any decision.
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.
How this estimate is calculated
Battery Storage Sizing Calculator · calculation version 0.9.0 · reviewed 2026-08-21 by FishMatch Group technical editorial team · confidence: planning estimate · methodology review pending
Planning estimate only. Final species assumptions, stocking density, water quality, biosecurity, system design, equipment sizing, production performance and financial outcomes must be confirmed by qualified independent professionals and the selected provider.
Purpose
Aquaculture critical loads — oxygenation, biofilter pumps, alarms — cannot tolerate outages. This tool sizes an LFP battery bank in kWh from critical-load kW, autonomy hours and depth-of-discharge (DoD).
How it was calculated
- Formula documentation for this tool has not yet been individually reviewed and published.
Where each value comes from
- Critical load
- Buyer input
- Autonomy required
- Buyer input
- Usable DoD
- Buyer input
- Inverter efficiency
- Buyer input
- Installed cost
- Buyer input
Limitations
- This tool has not yet passed the documented-methodology review. Treat every output as an unverified planning estimate.
- Performance source: NREL PVWatts v8 (developer.nlr.gov API, NSRDB PSM v3 weather), 1 kWp, standard module, fixed tilt at latitude, 14% losses, run 7 Oct 2026; defaults explained in Dobos, A.P., PVWatts Version 5 Manual, NREL/TP-6A20-62641 (2014) — 14% total losses, 96% nominal inverter efficiency.
- Battery cost benchmark: Cole, W., Ramasamy, V., Turan, M., Cost Projections for Utility-Scale Battery Storage: 2023 Update, NREL/TP-6A40-85332 (2023); use your installer's quote first.
- Round up to the battery module size your supplier offers.
- For grid-tied hybrid systems, size to critical loads only — non-critical loads run on grid or solar directly.
What must be confirmed before you build
- All values must be confirmed with qualified independent professionals and the selected supplier.
Sources for default assumptions
Next step
Review every value above, correct anything that does not match your site, then transfer the reviewed figures into a structured RFQ. Nothing is sent to any supplier until you approve it. Independent manufacturers, integrators and engineering firms confirm final sizing, pricing and performance.
Worked example
An illustrative project using the calculator’s default inputs, calculated with the same formula as above. Not a real project.
| Critical load | 12 kW |
|---|---|
| Autonomy required | 8 hours |
| Usable DoD | 0.85 0–1 |
| Inverter efficiency | 0.94 0–1 |
| Installed cost | 450 $/kWh |
| Usable energy required | 102.1 kWh |
|---|---|
| Battery nameplate | 120.2 kWh |
| Estimated CAPEX | $54,068 |
Who should use the battery storage sizing calculator?
Farm owners and engineers sizing grid, generator, solar or battery supply for pumps, aerators and other farm loads.
What decision does it support?
What power capacity and energy cost the farm should plan for, and whether backup or solar is worth quoting.
What inputs do you need?
- Critical load (kW)
- Autonomy required (hours)
- Usable DoD (0–1)
- Inverter efficiency (0–1)
- Installed cost ($/kWh)
Is it for commercial farms or aquariums?
Built for commercial farms, hatcheries and projects. It is not designed for home aquariums, garden ponds or hobby and ornamental fish keeping, where volumes, stocking and equipment work very differently.
Technical checklist
Short answer: Battery kWh The result is a planning estimate calculated only from the inputs on this page — not a supplier quote, design approval or guaranteed outcome.
Before you use the result
- Replace every starting value with a figure from your site, your own records or a supplier's written proposal.
- Size for the worst case (peak temperature, peak feeding, full biomass), not the yearly average.
- Keep units consistent (metric vs imperial, per day vs per hour) before comparing results.
- Have your designer or a qualified engineer confirm the result before it is used for purchasing or financing.
- Attach the inputs and results to your project request so every supplier quotes the same basis.
Sources
- Performance source: NREL PVWatts v8 (developer.nlr.gov API, NSRDB PSM v3 weather), 1 kWp, standard module, fixed tilt at latitude, 14% losses, run 7 Oct 2026; defaults explained in Dobos, A.P., PVWatts Version 5 Manual, NREL/TP-6A20-62641 (2014) — 14% total losses, 96% nominal inverter efficiency.
Stated assumptions (starting values)
These are only starting points. Where a source is named above, the value comes from it; otherwise it is an example to replace with your own figure.
- Critical load: starts at 12 kW
- Autonomy required: starts at 8 hours
- Usable DoD: starts at 0.85 0–1
- Inverter efficiency: starts at 0.94 0–1
- Installed cost: starts at 450 $/kWh
Checklist reviewed 13 October 2026. Ready to price it? Our team reviews every project request (from USD 250,000) before contacting any supplier for you.
Notes
- Performance source: NREL PVWatts v8 (developer.nlr.gov API, NSRDB PSM v3 weather), 1 kWp, standard module, fixed tilt at latitude, 14% losses, run 7 Oct 2026; defaults explained in Dobos, A.P., PVWatts Version 5 Manual, NREL/TP-6A20-62641 (2014) — 14% total losses, 96% nominal inverter efficiency.
- Battery cost benchmark: Cole, W., Ramasamy, V., Turan, M., Cost Projections for Utility-Scale Battery Storage: 2023 Update, NREL/TP-6A40-85332 (2023); use your installer's quote first.
- Round up to the battery module size your supplier offers.
- For grid-tied hybrid systems, size to critical loads only — non-critical loads run on grid or solar directly.
Battery kWh FAQs
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