Estimate capacity factor 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.
Capacity factor (%) = actual MWh ÷ (installed MW × 24 × days) × 100
The denominator assumes continuous operation at full nameplate power.
Capacity factor shows how much energy was produced relative to the theoretical nameplate maximum over identical dates.
Planning estimate only. Verify assumptions with site-specific technical, commercial, and financial analysis.
For 153,300 MWh from 50 MW over 365 days, the maximum is 438,000 MWh and capacity factor is 35.00%.
Use net metered generation for the period if you want a net operational capacity factor.
Yes. Enter the exact number of operating days covered by the energy figure.
It normally cannot. A result above 100% usually indicates mismatched units, capacity, or reporting dates.
No. It compares actual energy with continuous operation at nameplate capacity; it is not aerodynamic or electrical efficiency.
Use metered energy for realized capacity factor. Add estimated curtailment only when analyzing resource or unconstrained performance.
| Variable | Required consistency |
|---|---|
| Actual energy | Same assets and reporting period |
| Installed capacity | Nameplate MW operating in that period |
| Days | Exact duration represented by energy |