Eólica BR Média Onshore
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Onshore Wind BR Average calculator estimates energy production from land-based wind turbines using Brazil's average capacity factor (~35%). It factors in wind speed, rotor area, and turbine efficiency to calculate hourly, daily, or monthly energy output. Ideal for preliminary planning or rapid site comparisons.
It applies the formula: Energy = (Wind Speed³ × Rotor Area × Efficiency × CF) / 1000. The ~35% capacity factor reflects nationwide average performance, considering wind variability across different terrains and seasons. Results are shown in kWh, adaptable to various timeframes.
Use this tool for sizing wind systems in regions with typical Brazilian wind conditions. It's suitable for small projects or when local factors (like terrain roughness) aren't available. For critical applications, combine with on-site wind measurements.
Note: this model simplifies maintenance, turbine shadowing, and seasonal variations. It doesn't replace detailed technical feasibility studies or long-term performance assessments.
Frequently asked questions
What is capacity factor and why 35%?
It's the ratio between actual and theoretical maximum energy output. 35% is Brazil's historical average, varying by region and local conditions.
How to calculate rotor area?
Use π × (diameter/2)². Diameter is the full span of the turbine blades.
Can it be used for offshore turbines?
No. This tool is for land-based turbines, as marine roughness and stable winds aren't accounted for.
Why is wind speed cubed in calculations?
Wind power follows the basic formula P = ½ρAv³, where energy is proportional to wind speed cubed.
Results in kWh or MWh?
The tool outputs kWh. Divide by 1,000 for MWh. The unit depends on the selected timeframe.