Estimate annual output 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.
Net MWh = MW × 24 × days × (capacity factor ÷ 100) × (1 − losses ÷ 100)
Gross generation is calculated first; the loss fraction is then deducted.
The main result is estimated net electrical energy for the selected period. Average delivered power makes the annual total easier to compare with a steady load.
Planning estimate only. Verify assumptions with site-specific technical, commercial, and financial analysis.
With 500 MW, a 45% capacity factor, 12% losses, and 365 days, gross output is 1,971,000 MWh and net output is 1,734,480 MWh.
Capacity factor captures the combined effect of wind availability, turbine performance, curtailment, and downtime over a year.
Yes. For one turbine, enter its rated capacity. For a farm, enter the sum of all turbine ratings.
Yes. The loss input reduces gross generation to an estimated net output delivered after the modeled losses.
Use the operating-days input for the actual period. A full non-leap year uses 365 days.
No. It is a planning estimate; project finance should use site measurements, wake modeling, and a bankable yield assessment.
| Variable | Role | Unit |
|---|---|---|
| Installed capacity | Nameplate rating | MW |
| Capacity factor | Time-averaged production ratio | % |
| Losses | Deduction from gross energy | % |