Estimate system sizing for a offshore wind project using transparent, editable assumptions. The calculator turns project capacity, energy, performance, or cost inputs into a clear primary result plus supporting figures for planning and comparison. It is intended for early-stage screening, scenario checks, and communication—not as a substitute for a site-specific engineering, resource, tariff, or financial study. Adjust every field to match the same asset boundary and reporting period.
Required MW = target MWh ÷ [8,760 × capacity factor × (1 − losses)]
Turbine count is required MW divided by turbine rating, rounded up to the next whole turbine.
Required capacity is the theoretical nameplate total needed to meet the annual energy target under the entered performance assumptions.
Planning estimate only. Verify assumptions with site-specific technical, commercial, and financial analysis.
For 500,000 MWh/year at 45% capacity factor and 12% losses, the energy-based requirement is 144.14 MW. With 15 MW turbines, round up to 10 turbines (150 MW).
Annual energy demand is divided by annual hours, capacity factor, and the retained fraction after losses.
Yes. A fractional turbine is rounded up because the energy target requires a whole number of the selected turbine size.
Include all expected losses between gross turbine production and the point where annual energy is measured.
Yes. Enter the annual energy target and the proposed turbine rating; the result will show whether one turbine is sufficient.
No. This is an energy-based nameplate sizing estimate and does not determine physical layout or interconnection capacity.
| Variable | Planning meaning |
|---|---|
| Target energy | Annual net production objective |
| Capacity factor | Expected utilization of nameplate rating |
| Losses | Additional deduction from modeled output |
| Turbine rating | Converts continuous MW need to whole units |